Zenoah Trimmer LRTZ2610 User Manual

848A3393A0 (801)  
G
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OWNER’S MANUAL  
SHORT REACH TRIMMER  
LONG REACH TRIMMER  
SRTZ2610  
SRTZ2610F  
LRTZ2610  
 
SRTZ2610/SRTZ2610F/LRTZ2610  
SAFETY FIRST  
Contents  
Instructions contained in warnings within this manual marked  
with a  
symbol concern critical points which must be taken  
1. Parts location .................................................. 3  
2. Specifications ................................................. 4  
3. Warning labels on the machine ...................... 4  
4. Symbols on the machine ................................ 4  
5. For safe operation........................................... 5  
6. Set up ............................................................. 8  
7. Fuel ................................................................. 9  
8. Operation ...................................................... 10  
9. Maintenance ................................................. 12  
10. Storage ......................................................... 14  
11. Disposal ........................................................ 14  
12. Troubleshooting guide .................................. 15  
into consideration to prevent possible serious bodily injury, and  
for this reason you are requested to read all such instructions  
carefully and follow them without fail.  
G
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WARNINGS IN THE MANUAL  
WARNING  
This mark indicates instructions, which must be followed in or-  
der to prevent accidents, which could lead to serious bodily in-  
jury or death.  
IMPORTANT  
This mark indicates instructions, which must be followed, or it  
leads to mechanical failure, breakdown, or damage.  
NOTE  
This mark indicates hints or directions useful in the use of the  
product.  
Information  
This machine is equipped with an Overload Cancellation Mechanism.  
When the cutting blades have got into metal wires or twigs difficult to cut, the mechanism works as a shock absorber,  
and protects the gears and the blades from severe reaction which could give damage to those parts.  
When the blades are frequently caught by twigs, please check the following points:  
1. Size of the twigs --> Never try to cut twigs thicker than 5 mm.  
2. Condition of the blade edges --> Replace the worn-out blades.  
Thank you for choosing our product.  
1. Parts location  
(1) Loop handle  
(2) Suspension point  
(3) Stop switch  
(4) Throttle cable  
(5) Throttle trigger  
(6) Throttle set button  
(7) Shaft tube  
13  
12  
8
11  
(8) Spark arrester  
(9) Starter knob  
(10) Fuel tank  
9
10  
(11) Primer  
(12) Choke lever  
(13) Air cleaner cover  
(14) Blade  
(SRTZ2610)  
(15) Transmission  
(SRTZ2610F)  
(LRTZ2610)  
GB-3  
 
SRTZ2610/SRTZ2610F/LRTZ2610  
2. Specification  
SRTZ2610  
1725 x 400 x 365  
6.4  
LRTZ2610  
2300 x 400 x 365  
6.6  
Model  
Overall size (LxWxH)  
Dry weight *  
SRTZ2610F  
1734 x 338 x 254  
6.5  
mm  
kg  
Engine  
Type  
Model  
Max output  
Idle speed  
Displacement  
Fuel  
Air-cooled 2-stroke gasoline  
Zenoah GZ25N  
rpm  
rpm  
cm3  
1.2Hp (0.9kW) at 7500min-1  
3000 200min-1  
25.4  
Mixture (Gasoline 50 : Oil 1) (when using ZENOAH genuine oil)  
Carburetor  
Spark plug  
Walbro Diaphragm type  
NGK CMR7A  
Fuel tank capacity  
Transmission  
L
0.65  
Centrifugal clutch, Spiral bevel gear, Cam crank  
Reduction ratio  
4.25  
4.0  
4.0  
Specifications are subject to change without notice.  
* Shoulder strap and protective cover are not included.  
3. Warning labels on  
the machine  
4. Symbols on  
the machine  
For safe operation and maintenance, symbols are carved  
in relief on the machine. According to these indications,  
please be careful not to make a mistake.  
(1) Warning / Attention  
The port to refuel the “MIX GASOLINE”  
Position: FUEL TANK CAP  
(2) Read owner’s manual before op-  
erating this machine.  
The direction to close the choke  
Position: ENGINE COVER  
(3)Wear head, eye and ear protec-  
tion.  
The direction to open the choke  
Position: ENGINE COVER  
(4) Keep hands away from  
cutting blades.  
If warning label peels off or becomes soiled and  
impossible to read, you should contact the  
dealer from which you purchased the product  
to order new labels and affix them in the required  
location(s).  
Never modify your machine.  
We won’t warrant the machine, if you use the  
remodeled trimmer or if you don’t observe  
the proper usage written in the manual.  
GB-4  
 
SRTZ2610/SRTZ2610F/LRTZ2610  
5. For safe operation  
b. At night, at times of heavy fog,  
or at any other times when  
your field of vision might be  
limited and it would be diffi-  
cult to gain a clear view of the  
working area.  
c. During rain storms, during  
lightning storms, at times of  
strong or gale-force winds, or  
at any other times when  
weather conditions might  
make it unsafe to use the  
product.  
1. Read this manual carefully until  
you completely understand and  
follow all safety and operating  
instructions.  
2. Keep this manual handy so that  
you may refer to it later when-  
ever any questions arise. Also  
note, if you have any questions  
which cannot be answered  
herein, contact the dealer from  
whom you purchased the prod-  
uct.  
3. Always be sure to include this  
manual when selling, lending, or  
otherwise transferring the own-  
ership of this product.  
4. Never allow children or anyone  
unable to fully understand the  
directions given in the manual  
to use the machine.  
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WORKING PLAN  
1. You should never use the prod-  
uct when under the influence of  
alcohol, when suffering from ex-  
haustion or lack of sleep, when  
suffering from drowsiness as a re-  
sult of having taken cold medicine  
or at any other time when a pos-  
sibility exists that your judgment  
might be impaired or that you  
might not be able to operate the  
product properly and in a safe  
manner.  
WORKING CONDITION  
1. When using the product, you  
should wear proper clothing and  
protective equipment.  
(1) Helmet  
2. When planning your work sched-  
ule, allow plenty of time to rest.  
Limit the amount of time over  
which the product is to be used  
continuously to somewhere  
around 30 ~ 40 minutes per ses-  
sion, and take 10 ~ 20 minutes of  
rest between work sessions. Also  
try to keep the total amount of  
work performed in a single day  
under 2 hours or less.  
(2) Ear protectors  
(3) Protection goggles or face  
protector  
(4) Thick work gloves  
(5) Non-slip-sole work boots  
2. And you should carry with you.  
(1) Attached tools  
(2) Properly reserved fuel  
(3) Spare blade  
(4) Things to notify your working  
area (rope, warning signs)  
(5) Whistle (for collaboration or  
emergency)  
WARNING  
1. If you don’t observe the working  
time, or working manner (See  
“USING THE PRODUCT”), Re-  
petitive Stress Injury (RSI) could  
occur.  
(6) Hatchet or saw (for removal of  
obstacles)  
3. Do not wear loose clothing, jew-  
elry, short trousers, sandals, or go  
barefoot. Do not wear anything  
which might be caught by a mov-  
ing part of the unit. Secure hair  
so it is above shoulder length.  
If you feel discomfort, redness and  
swelling of your fingers or any  
other part of your body, see a doc-  
tor before getting worse.  
2. To avoid noise complaints, in gen-  
eral, operate product between  
8 a.m. and 5 p.m. on weekdays  
and 9 a.m. to 5 p.m. on weekends.  
WORKING CIRCUMSTANCE  
1. Never start the engine inside a  
closed room or building. Exhaust  
gases contain dangerous carbon  
monoxide.  
NOTE  
2. Never use the product,  
a. when the ground is slippery  
or when you can’t maintain a  
steady posture.  
Check and follow the local regula-  
tions as to sound level and hours of  
operations for the product.  
GB-5  
 
SRTZ2610/SRTZ2610F/LRTZ2610  
5. For safe operation  
BEFORE STARTING  
WARNING  
THE ENGINE  
1. The area within a perimeter of  
15 m (50 ft) of the person using  
the product should be considered  
a hazardous area into which no  
one should enter. If necessary,  
yellow warning rope, warning  
signs should be placed around  
the perimeter of the area. When  
work is to be performed simulta-  
neously by two or more persons,  
care should also be taken to con-  
stantly look around or otherwise  
check for the presence and loca-  
tions of other people working so  
as to maintain a distance between  
each person sufficient to ensure  
safety.  
Never place the throttle into the  
high-speed position when starting  
the engine.  
3. After starting the engine, check  
to make sure that the cutting at-  
tachment stops moving when the  
throttle is moved fully back to its  
original position. If it continues to  
move even after the throttle has  
been moved fully back, turn off  
the engine and take the unit to  
your authorized ZENOAH servic-  
ing dealer for repair.  
USING THE PRODUCT  
IMPORTANT  
2. Check the condition of working  
area to avoid any accident by hit-  
ting hidden obstacles such as  
stumps, stones, cans, or broken  
glass.  
Cut only materials recommended by  
the manufacturer. And use only for  
tasks explained in the manual.  
IMPORTANT  
1. Grip the handles firmly with both  
hands using your whole hand.  
Place your feet slightly apart  
(slightly further apart than the  
width of your shoulders) so that  
your weight is distributed evenly  
across both legs, and always be  
sure to maintain a steady, even  
posture while working.  
2. Maintain the speed of the engine  
at the level required to perform  
cutting work, and never raise the  
speed of the engine above the  
level necessary.  
3. If the unit starts to shake or vi-  
brate, turn off the engine and  
check the whole unit. Do not use  
it until the trouble has been prop-  
erly corrected.  
4. Keep all parts of your body away  
from moving cutting attachment  
and hot surfaces.  
Remove any obstacle before begin-  
ning work.  
3. Inspect the entire unit for loose  
fasteners and fuel leakage. Make  
sure that the cutting attachment  
is properly installed and securely  
fastened.  
4. Always use the shoulder strap.  
Adjust the strap for comfort be-  
fore starting the engine. The strap  
should be adjusted so the left  
hand can comfortably hold the  
handlebar grip approximately  
waist high.  
STARTING THE ENGINE  
1. Keep bystanders and animals at  
least 15 m (50 ft) away from the  
operating point. If you are ap-  
proached, immediately stop the  
engine.  
2. The product is equipped with a  
centrifugal clutch mechanism, so  
the cutting attachment begins to  
move as soon as the throttle le-  
ver is pulled. When starting the  
engine, place the product onto  
the ground in a flat clear area and  
hold it firmly in place so as to en-  
sure that neither the cutting part  
nor the throttle come into contact  
with any obstacle when the en-  
5. Never touch the muffler, spark  
plug, or other metallic parts of the  
engine while the engine is in op-  
eration or immediately after shut-  
ting down the engine. Doing so  
could result in serious burns or  
electrical shock.  
gine starts.  
GB-6  
 
SRTZ2610/SRTZ2610F/LRTZ2610  
5. For safe operation  
IF SOMEONE COMES  
HANDLING FUEL  
1. Guard against hazardous situa-  
tions at all times. Warn adults to  
keep pets and children away from  
the area. Be careful if you are ap-  
proached. Injury may result from  
flying debris.  
2. If someone calls out or otherwise  
interrupts you while working, al-  
ways be sure to turn off the en-  
gine before turning around.  
1. The engine of the ZENOAH prod-  
uct is designed to run on a mixed  
fuel, which contains highly flam-  
mable gasoline. Never store cans  
of fuel or refill the tank of the unit  
in any place where there is a  
boiler, stove, wood fire, electrical  
sparks, welding sparks, or any  
other source of heat or fire which  
might ignite the fuel.  
G
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2. Never smoke while operating the  
unit or refilling its fuel tank.  
MAINTENANCE  
1. In order to maintain your product  
in proper working order, perform  
the maintenance and checking  
operations described in the  
manual at regular intervals.  
2. Always be sure to turn off the en-  
gine before performing any main-  
tenance or checking procedures.  
3. When refilling the tank, always  
turn off the engine and allow it to  
cool down. Take a careful look  
around to make sure that there are  
no sparks or open flames any-  
where nearby before refueling.  
4. Wipe spilled fuel completely us-  
ing a dry rag if any fuel spillage  
occurs during refueling.  
WARNING  
5. After refueling, screw the fuel cap  
back tightly onto the fuel tank and  
then carry the unit to a spot 3 m  
or more away from where it was  
refueled before turning on the en-  
gine.  
The metallic parts reach high tem-  
peratures immediately after stop-  
ping the engine.  
3. When replacing the cutting at-  
tachment or any other part, or  
when replacing the oil or any lu-  
bricant, always be sure to use  
only ZENOAH products or  
products which have been cer-  
tified by ZENOAH for use with  
the ZENOAH product.  
4. In the event that any part must be  
replaced or any maintenance or  
repair work not described in this  
manual must be performed,  
please contact a representative  
from the store nearest ZENOAH  
authorized servicing dealer for  
assistance.  
TRANSPORTATION  
1. When hand-carrying the product,  
cover over the cutting part if nec-  
essary, lift up the product and  
carry it paying attention to the  
blade.  
2. Never transport the product over  
rough roads over long distances  
by vehicle without removing all  
fuel from the fuel tank. If doing so,  
fuel might leak from the tank dur-  
ing transport.  
5. Do not use any accessory or at-  
tachment other than those bear-  
ing the ZENOAH mark and rec-  
ommended for the unit.  
6. Under no circumstances should  
you ever take apart the product  
or alter it in any way. Doing so  
might result in the product be-  
coming damaged during opera-  
tion or the product becoming un-  
able to operate properly.  
GB-7  
 
SRTZ2610/SRTZ2610F/LRTZ2610  
6. Set up  
MOUNTING ENGINE  
ATTACHING THE TRIMMING MECHANISM  
1. Remove the cap on the end of the main pipe.  
2. Remove the screw screwed into the end of the trim-  
ming mechanism.  
3. Insert the end of the trimming mechanism into the main  
pipe.  
4. Line up the hole on the end of the trimming mecha-  
nism into which the screw is to be inserted with the  
hole on the main pipe, and screw the screw firmly in.  
5. Using a 10-mm wrench, screw in the hexagonal bolt  
provided to fix the trimming mechanism into place.  
1. Push the shaft tube toward the clutch housing and move  
it by hand to check that the drive shaft is engaged with  
the gears.  
2. Insert the shaft tube into the clutch housing until it bot-  
toms, and align the positioning holes on the clutch hous-  
ing and the shaft tube and install the screw. When diffi-  
cult to engage, twist the engine slightly.  
3. Fasten the clamp securely with two screws.  
Bolt  
(1) Main pipe  
(2) Trimming  
mechanism  
WARNING  
(3) Screw hole  
(4) Screw  
(5) Fastening bolt  
Never use any screws other than those specified by the  
manufacturer, or the engine can get loose, resulting in a  
hazardous event.  
IMPORTANT  
Tighten the screws gradually by turns.  
WARNING  
CONNECTING THROTTLE WIRE  
1. Remove the air cleaner cover.  
ALWAYS WEAR THE PROVIDED HARNESS WHEN  
USING THE MACHINE!  
Always make sure the machine is hooked securely  
to the harness.  
If you don't, you will be unable to control the machine  
safely.This can result in injury to yourself or others.  
Never use a harness with a defective quick release  
or any other damage.  
2. Connect the end of the throttle wire to the joint on the top  
of the carburetor.  
M3 screw  
Adjuster  
HOW TO WEAR  
1. Wear the provided harness without twisted bands, with  
the hanger on your right side.  
Insert the cable  
to the end of  
adjuster  
Full on stopper  
Idling adjust screw  
1. Connect throttle wire with carburetor. Insert the cable to  
the end of adjuster fix the throttle cable by tightening M3  
screw. (Tightening torque: 0.4 ~ 0.8 N.m.)  
(1) Hanger  
(1)  
2. Make sure the ‘STOPPER-PLATE’ of carburetor moves to  
contact with ‘IDLING ADJUST SCREW’ and the ‘SWING-  
ARM’ of carburetor moves to contact with ‘FULL ON  
STOPPER’ by gripping throttle lever.  
QUICK RELEASE  
The harness is equipped with a “QUICK RELEASE”devise.  
To release the machine from the harness in emergency  
situations, please follow the procedure as explained  
below.  
CONNECTING SWITCH WIRES  
Connect the switch wires between the engine and the  
main unit. Pair the wires of the same color.  
WARNING  
CLAMP  
NOTE  
Be the clamp in the location of the  
arrow mark.  
clamp  
Make sure to check proper working of the QUICK RE-  
LEASE device BEFORE operating the machine.  
Make sure to hold the unit securely when using the  
QUICK RELEASE.  
arrow mark  
While holding the unit by your  
right hand securely, press both  
sides of the buckle. sides of  
the buckle.  
INSTALLING HANDLE  
NOTE  
The handle is put during the arrow mark.  
(1) Buckle  
(1)  
Mount the handle to  
the shaft tube and  
clamp it at a location  
that is comfortable  
to you.  
BALANCE UNIT  
1. Put on strap and attach unit to strap.  
2. Depending on the working posture, slide clamp up or  
down until unit balances and the strap fits your body.  
About 19 inches (48 cm)  
GB-8  
 
SRTZ2610/SRTZ2610F/LRTZ2610  
7. Fuel  
FUEL  
3. Pour in all of the oil and agitate well.  
4. Pour in the rest of gasoline and agitate again for at  
least one minute. As some oils may be difficult to  
agitate depending on oil ingredients, sufficient agi-  
tation is necessary for the engine to last long. Be  
careful that, if the agitation is insufficient, there is an  
increased danger of early piston seizing due to ab-  
normally lean mixture.  
WARNING  
Gasoline is very flammable. Avoid smoking or  
bringing any flame or sparks near fuel. Make sure  
to stop the engine and allow it cool before refuel-  
ing the unit. Select outdoor bare ground for fuel-  
ing and move at least 3 m (10 ft) away from the  
fueling point before starting the engine.  
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5. Put a clear indication on the outside of the container  
to avoid mixing up with gasoline or other containers.  
6. Indicate the contents on outside of container for easy  
identification.  
FUELING THE UNIT  
1. Untwist and remove the fuel cap. Rest the cap on a  
dustless place.  
2. Put fuel into the fuel tank to 80% of the full capacity.  
3. Fasten the fuel cap securely and wipe up any fuel  
spillage around the unit.  
• The Zenoah engines are lubricated by oil specially  
formulated for air-cooled 2-cycle gasoline engine use.  
If Zenoah oil is not available, use an anti-oxidant added  
quality oil expressly labeled for air-cooled 2-cycle  
engine use (JASO FC GRADE OIL or ISO EGC  
GRADE).  
WARNING  
1. Select bare ground for fueling.  
2. Move at least 10 feet (3 meters) away from the fu-  
eling point before starting the engine.  
3. Stop the engine before refueling the unit. At that  
time, be sure to sufficiently agitate the mixed gaso-  
line in the container.  
• Do not use BIA or TCW (2-stroke water-cooling type)  
mixed oil.  
FORYOUR ENGINE LIFE, AVOID:  
1. FUEL WITH NO OIL (RAW GASOLINE) – It will cause  
severe damage to the internal engine parts very  
quickly.  
2. GASOHOL – It can cause deterioration of rubber and/  
or plastic parts and disruption of engine lubrication.  
3. OIL FOR 4-CYCLE ENGINE USE – It can cause spark  
plug fouling, exhaust port blocking, or piston ring  
sticking.  
RECOMMENDED MIXING RATIO  
GASOLINE 50 : OIL 1  
(when using ZENOAH genuine oil)  
Exhaust emission are controlled by the funda-  
mental engine parameters and components (eq.,  
carburation, ignition timing and port timing) with-  
out addition of any major hardware or the intro-  
duction of an inert material during combustion.  
• These engines are certified to operate on unleaded  
gasoline.  
4. Mixed fuels which have been left unused for a pe-  
riod of one month or more may clog the carburetor  
and result in the engine failing to operate properly.  
5. In the case of storing the product for a long period of  
time, clean the fuel tank after rendering it empty. Next,  
activate the engine and empty the carburetor of the  
composite fuel.  
• Make sure to use gasoline with a minimum octane  
number of 89RON (USA/Canada: 87AL).  
• If you use a gasoline of a lower octane value than  
prescribed, there is a danger that the engine tem-  
perature may rise and an engine problem such as  
piston seizing may consequently occur.  
6. In the case of scrapping the used mixed oil container,  
scrap it only at an authorized repository site.  
NOTE  
• Unleaded gasoline is recommended to reduce the  
contamination of the air for the sake of your health  
and the environment.  
As for details of quality assurance, read the description  
in the section Limited Warranty carefully. Moreover, nor-  
mal wear and change in product with no functional influ-  
ence are not covered by the warranty. Also, be careful  
that, if the usage in the instruction manual is not observed  
as to the mixed gasoline, etc. described therein, it may  
not be covered by the warranty.  
• Poor quality gasolines or oils may damage sealing  
rings, fuel lines or fuel tank of the engine.  
HOW TO MIX FUEL  
IMPORTANT  
Pay attention to agitation.  
1. Measure out the quantities of gasoline and oil to be  
mixed.  
2. Put some of the gasoline into a clean, approved fuel  
container.  
GB-9  
 
SRTZ2610/SRTZ2610F/LRTZ2610  
8. Operation  
STARTING ENGINE  
WARNING  
IMPORTANT  
Avoid pulling the rope to its end or returning it by releas-  
ing the knob. Such actions can cause starter failures.  
The cutting head will start moving upon the engine  
starts.  
6. Move the choke lever downward to open the choke.  
And restart the engine.  
1. Rest the unit on a flat, firm place. Keep the cutting  
head off the ground and clear of surrounding objects  
as it will start moving upon starting of the engine.  
2. Push the primer several times until overflown fuel flows  
out in the clear tube.  
7. Allow the engine to warm up for a several minutes  
before starting operation.  
NOTE  
1. When restarting the engine immediately after stop-  
ping it, leave the choke open.  
2. Overchoking can make the engine hard to start due  
to excess fuel. When the engine failed to start after  
several attempts, open the choke and repeat pulling  
the rope, or remove the spark plug and dry it.  
STOPPING ENGINE  
1. Release the throttle lever and run the engine for a half  
minute.  
3. Move the choke lever to the closed position.  
choke lever  
2. Shift the stop switch to the “Stop” position.  
IMPORTANT  
close  
open  
Except for an emergency, avoid stopping the engine  
while pulling the throttle lever.  
IMPORTANT  
4. Set the stop switch to the “RUN” position. While pull-  
ing the throttle lever(1,2), push the throttle set but-  
ton(3), and release the throttle(2), then the throttle le-  
ver is in to the “start position”.  
When it doesn’t stop at the stop switch, move the choke  
lever to the closed position.  
ADJUSTING THROTTLE CABLE  
The normal play is 1 or 2mm when measured at the car-  
buretor side end. Readjust with the cable adjuster as  
required.  
(A) Run  
(B) Stop  
(C) stop switch  
5. While holding the unit firmly, pull out the starter rope  
quickly until engine fires.  
1 to 2mm  
Cable adjuster  
GB-10  
 
SRTZ2610/SRTZ2610F/LRTZ2610  
8. Operation  
ADJUSTING IDLING SPEED  
resulting in injuries, scratches, and cuts, and for this  
reason you should always be sure to wear a helmet  
and face protector when using your trimmer.  
1. When the engine tends stop frequently at idling mode,  
turn the adjusting screw clockwise.  
2. When the cutting head keeps moving after releasing  
the trigger, turn the adjusting screw counter-clockwise.  
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NOTE  
• The thickness of branches which may be cut using  
this trimmer is limited to up to approximately 4.8mm.  
Never try to cut branches thicker than this, as doing  
so may result in damage to the trimmer.  
Idle adjusting screw  
NOTE  
ADJUSTING THE ANGLE OF THE  
CUTTING BLADES  
1. Stop the trimmer engine.  
Warm up the engine before adjusting the idling speed.  
2. Turn the bolt located on the top of the trimming mecha-  
nism counter-clockwise to loosen it.  
3. Adjust the angle of the blades to the desired angle,  
and then fix the bolt firmly back into place.  
ADJUSTING THE MAXIMUM SPEED  
• The screw at the throttle lever is for adjusting the maxi-  
mum rpm.  
Turning the screw crock-wise, the rpm becomes down,  
the otherwise, the rpm becomes up. (STANDARD OP-  
ERATION SPEED: 8000 to 9500 rpm)  
Running engine with faster engine speed than 9500  
rpm may damage the engine, slower engine speed  
than 8000 rpm may cause of the poor cutting ability.  
1) Clamp bolt  
2) Trimming mechanism  
3) Tighten  
4) Loosen  
adjust screw  
up  
down  
WARNING  
• This product is equipped with extremely sharp blades,  
and when used improperly these blades can be ex-  
tremely dangerous, and improper handling can cause  
accidents which may in turn lead to serious injury or  
death. For this reason, you should always be careful  
to follow the following instructions when using your  
trimmer.  
• Never hold the trimmer in a way in which the blades  
are pointed towards someone else.  
• Never allow the blades to come into proximity with  
your body while the engine of the trimmer is in opera-  
tion.  
• Always be sure to turn off the engine before chang-  
ing the angle of the blades, removing branches which  
have become stuck in the blades, or at any other time  
when coming into close proximity with the blades.  
• Always wear work gloves made of leather or some  
other sturdy material when using the trimmer.  
• Always place the blade cover provided with the trim-  
mer over the blades when not in use.  
• Falling branches may fall onto the face or into the eyes,  
GB-11  
 
SRTZ2610/SRTZ2610F/LRTZ2610  
9. Maintenance  
MAINTENANCE CHART  
Every Every Every  
25 50 100  
Before  
use  
System/components  
Procedure  
Note  
hours hours hours  
after after after  
fuel leaks, fuel spillage  
fuel tank, air filter, fuel filter  
wipe out  
inspect/clean  
see adjusting  
idling speed  
clean and readjust  
plug gap  
replace, if necessary  
replace carburetor  
if necessary  
idle adjusting screw  
GAP: .025 in (0.6 ~ 0.7 mm)  
replace, if necessary  
spark plug  
cylinder fins, intake air cooling vent clean  
muffler, spark arrester, cylinder exhaust port  
clean, remove piled up carbon  
throttle lever, stop switch  
check operation  
replace if  
something’s wrong  
grease  
cutting parts  
transmission, cutter case  
screws/nuts/bolts  
tighten/replace  
not adjusting screws  
Before cleaning, inspecting, or repairing the unit, make sure that the engine has stopped and is cool.  
Use protective gloves whenever inspecting, removing, sharpening, and installing the blades.  
BLADES  
QUICK TIP  
• When refilling the tank or resting, it is often a good  
idea to use the time to oil the cutting blades.  
• If a gap exists between the upper and lower blades,  
follow the procedure below to adjust them so that they  
fit more closely together.  
• If the blades become so worn down that it is no longer  
possible to eliminate the gap between them, you  
should contact the authorized ZENOAH servicing  
dealer from which you purchased your ZENOAH trim-  
mer to have the blades resharpened or replaced.  
• Loosen lock nut (A) as shown in the diagram.  
2. Tighten screw (B) fully, and then turn one-third to one-  
half of a rotation backward.  
3. While holding onto the screw to keep it in position,  
tighten the lock nut.  
TRANSMISSION  
• The inside of the transmission should be lubricant us-  
ing ZENOAH-approved lubricant after every 25 hours  
of use.  
4 .Check to make sure that the flat washer (C) is loose  
enough so that it may be turned by pressing on it with  
a finger.  
• When adding lubricant, use a grease gun to insert  
lubricant into the three grease nipples located on the  
transmission.  
TYPE OF LUBRICANT TO BE USED  
Always be sure to use #2 lithium heat-resistant lubricant.  
(1) Upper blade  
(2) Lower blade  
NOTE  
• Screwing in the screw too tightly may make it impos-  
sible for the blades to move. Conversely, not screw-  
ing in the screw tightly enough may make the blades  
of the trimmer feel dull and cause leaves and branches  
to become caught in the blades of the trimmer.  
(1) Grease fitting  
GB-12  
 
SRTZ2610/SRTZ2610F/LRTZ2610  
9. Maintenance  
WARNING  
IMPORTANT  
Make sure that the engine has stopped and is cool  
before performing any service to the machine. Con-  
tact with moving cutting head or hot muffler may re-  
sult in a personal injury.  
• Note that using any spark plug other than those des-  
ignated may result in the engine failing to operate  
properly or in the engine becoming overheated and  
damaged.  
To install the spark plug, first turn the plug until it is  
finger tight, then tighten it a quarter turn more with a  
socket wrench.  
G
B
AIR FILTER  
• The air filter, if clogged, will reduce the engine perfor-  
mance. Check and clean the filter element in warm,  
soapy water as required. Dry completely before in-  
stalling. If the element is broken or shrunk, replace  
with a new one.  
9.8 ~ 11.8 N.m.  
TIGHTENING TORQUE:  
(1 ~ 1.2 kg.m.)  
MUFFLER  
WARNING  
Inspect periodically, the muffler for loose fasten-  
ers, any damage or corrosion. If any sign of ex-  
haust leakage is found, stop using the machine  
and have it repaired immediately.  
Air Filter  
Note that failing to do so may result in the engine  
catching on fire.  
FUEL FILTER  
• When the engine runs short of fuel supply, check the  
fuel cap and the fuel filter for blockage.s  
SPARK ARRESTER  
• The muffler is equipped with a spark arrester to pre-  
vent red hot carbon from flying out of the exhaust out-  
let. Periodically inspect and clean as necessary with  
a wire brush.  
Fuel filter  
Spark arrester  
SPARK PLUG  
• Starting failure and mis-firing are often caused by a  
fouled spark plug. Clean the spark plug and check  
that the plug gap is in the correct range. For a re-  
placement plug, use the correct type specified by  
ZENOAH.  
0.6 - 0.7 mm  
REPLACEMENT PLUG IS A NGK CMR7H.  
GB-13  
 
SRTZ2610/SRTZ2610F/LRTZ2610  
9. Maintenance  
INTAKE AIR COOLING VENT  
WARNING  
PROCEDURES TO BE PERFORMED AFTER EV-  
ERY 100 HOURS OF USE  
1. Remove the muffler, insert a screwdriver into the vent,  
and wipe away any carbon buildup. Wipe away any  
carbon buildup on the muffler exhaust vent and cylin-  
der exhaust port at the same time.  
Never touch the cylinder, muffler, or spark plugs  
with your bare hands immediately after stopping  
the engine.The engine can become very hot when  
in operation, and doing so could result in severe  
burns.  
2. Tighten all screws, bolts, and fittings.  
3. Check to see if any oil or grease has worked its way  
in between the clutch lining and drum, and if it has  
wipe it away using oil-free, lead-free gasoline.  
When checking the machine to make sure that it  
is okay before using it, check the area around the  
muffler and remove any wood chips or leaves  
which have attached themselves to the machine.  
Failing to do so could cause the muffler to become  
overheated, and that this in turn could cause the  
engine to catch on fire. Always make sure that the  
muffler is clean and free of wood chips, leaves,  
and other waste before use.  
Check the intake air cooling vent and the area  
around the cylinder cooling fins after every 25  
hours of use for blockage, and remove any waste  
which has attached itself to the machine. Note that  
it is necessary to remove the engine cover shown  
in (A) in order to be able to view the upper part of  
the cylinder.  
10. Storage  
• Aged fuel is one of major causes of engine starting  
failure. Before storing the unit, empty the fuel tank and  
run the engine until it uses all the fuel left in the fuel  
line and the carburetor. Store the unit indoor taking  
necessary measures for rust prevention.  
IMPORTANT  
• If waste gets stuck and causes blockage around the  
intake air cooling vent or between the cylinder fins, it  
may cause the engine to overheat, and that in turn  
may cause mechanical failure on the part of the ma-  
chine.  
• Oil the blades.  
Cylinder  
11. Disposal  
When disposing your machine, fuel or oil for the machine,  
be sure to allow your local regulations.  
Intake air cooling vent  
GB-14  
 
SRTZ2610/SRTZ2610F/LRTZ2610  
12. Troubleshooting guide  
Case 1. Starting failure  
CHECK  
fuel tank  
fuel filter  
PROBABLE CAUSES  
incorrect fuel  
fuel filter is clogged  
ACTION  
drain it and use correct fuel  
clean  
carburetor adjustment screw out of normal range  
adjust to normal range  
clean/dry  
correct (GAP: 0.6 ~ 0.7 mm)  
retighten  
G
B
sparking (no spark)  
spark plug  
spark plug is fouled/wet  
plug gap is incorrect  
disconnected  
Case 2. Engine starts but does not keep running/hard re-starting  
CHECK  
PROBABLE CAUSES  
ACTION  
fuel tank  
incorrect fuel or staled fuel drain it and use correct fuel  
carburetor adjustment screw out of normal range  
muffler, cylinder (exhaust port) carbon is built-up  
adjust to normal range  
wipe away  
wash  
air cleaner  
clogged with dust  
clogged with dust  
cylinder fin, fan cover  
clean  
When your unit seems to need further service, please consult with our ZENOAH service shop in your area.  
Limited warranty  
Should any failure occur on the product under normal oper-  
ating conditions within the applicable warranty period, the  
failed part will be replaced or repaired free of charge by a  
ZENOAH authorized dealer.  
NOT REDUCE THE WARRANTY OBLIGATION OF THE  
COMPANY.  
THE COMPANY IS LIABLE FOR DAMAGES TO OTHER  
ENGINE COMPONENTS CAUSED BY THE FAILURE OF A  
WARRANTED PART STILL UNDER WARRANTY.  
WARRANTY PERIOD: 1 year (6 months if used profession-  
ally, and 30 days if used for rental purpose) from the date of  
initial purchase.  
THE WARRANTY DOES NOT APPLY TO THOSE UNITS  
WHICH HAVE BEEN DAMAGED BY NEGLIGENCE OF IN-  
STRUCTION LISTED IN THE OWNER/OPERATOR MANUAL  
FOR PROPER USE AND MAINTENANCE OF THE UNITS  
ACCIDENT MISHANDLING, ALTERATION, ABUSE, IM-  
PROPER LUBRICATION, USE OF ANY PARTS OR ACCES-  
SORIES OTHER THAN THOSE SPECIFIED BY THE COM-  
PANY, OR OTHER CAUSES BEYOND THE COMPANY’S  
CONTROL.  
THE PURCHASER SHALL BEAR COSTS OF TRANS-  
PORTING THE UNIT TO AND FROM THE ZENOAH DEALER.  
THE PURCHASER SHALL NOT BE CHARGED FOR DIAG-  
NOSTIC LABOR WHICH LEADS TO THE DETERMINATION  
THAT A WARRANTED PART IS DEFECTIVE, IF THE DIAG-  
NOSTIC WORK IS PERFORMED AT THE ZENOAH DEALER.  
THE PURCHASER OR OWNER IS RESPONSIBLE FOR THE  
PERFORMANCE OF THE REQUIRED MAINTENANCE AS  
DEFINED BY THE MANUFACTURER IN THE OWNER/OP-  
ERATOR MANUAL.  
THIS WARRANTY DOES NOT COVER THOSE PARTS RE-  
PLACED BY NORMAL WEAR OR HARMLESS CHANGES  
IN THEIR APPEARANCE.  
THERE ARE NO OTHER EXPRESS WARRANTIES.  
ANY WARRANTED PART WHICH IS NOT SCHEDULED FOR  
REPLACEMENT AS REQUIRED MAINTENANCE, OR  
WHICH IS SCHEDULED ONLY FOR REGULAR INSPECTION  
TO THE EFFECT OF REPAIR OR “REPLACE AS NECES-  
SARY” SHALL BE WARRANTED FOR THE WARRANTY PE-  
RIOD. ANY WARRANTED PART WHICH IS SCHEDULED  
FOR REPLACEMENT AS REQUIRED MAINTENANCE  
SHALL BE WARRANTED FOR THE PERIOD OF TIME UP  
TO THE FIRST SCHEDULED REPLACEMENT POINT FOR  
THE PART.  
IMPLIED WARRANTIES INCLUDING THOSE OF MER-  
CHANTABILITY AND FITNESS FOR A PARTICULAR PUR-  
POSE ARE LIMITED TO TWO (2) YEARS OF HOME USE  
[ONE (1) YEAR FOR ANY OTHER USE] FROM THE ORIGI-  
NAL DELIVERY DATE.  
LIABILITIES FOR INCIDENTAL OR CONSEQUENTIAL  
DAMAGE UNDER ANY AND ALL WARRANTIES ARE  
EXCLUDED.  
ANY REPLACEMENT PART THAT IS EQUIVALENT IN PER-  
FORMANCE AND DURABILITY MAY BE USED IN NON-  
WARRANTY MAINTENANCE OR REPAIRS, AND SHALL  
IF YOU NEED TO OBTAIN MORE INFORMATION, PLEASE  
CALL YOUR NEAREST SERVICE CENTER, OR CHECK  
PLEASE ZENOAH WEB SITE  
GB-15  
 

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