Zenoah SRTZ2500 Owner's manual

OWNER/OPERATOR MANUAL
SHORT REACH TRIMMER
848-A2A-93A1 (501)
SRTZ2500
The engine exhaust from this product
contains chemicals known to the State
of California to cause cancer, birth
defects or other reproductive harm.
WARNING
Before using our trimmers, please
read this manual carefully to
understand the proper use of your
unit.
WARNING
DRIVE UNIT 000000 and up CUTTING UNIT 000000 and up ENGINE UNIT 50100000 and up
APPLICABLE SERIAL NUMBERS :

INFORMATION
This machine is equipped with an Overload Cancellation
Mechanism.
When the cutting blades have got into metal wires or those
twigs difficult to cut, the mechanism acts as a shock
absorber, and protects the drive 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 3/16” (5mm).
2. Condition of the blade edges. REPLACE THE WORN
OUT BLADES.
For the detail of the mechanism, please see below.
Thank you for choosing our product.

SAFETY FIRST
Instructions contained in warnings within this
manual marked with a symbol concern
critical points which must be taken 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.
■WARNINGS IN THE MANUAL
This mark indicates instructions which must be
followed in order to prevent accidents which could
lead to serious bodily injury or death.
This mark indicates instructions which must be
followed, or it leads to mechanical failure,
breakdown, or damage.
This mark indicates hints or directions useful in the
use of the product.
NOTE
IMPORTANT
WARNING
CONTENTS
1. Parts location …………………………………4
2. Specifications …………………………………4
3. Warning labels on the machine ……………5
4. Symbols on the machine ……………………6
5. For safe operation ……………………………7
6. Set up …………………………………………13
7. Fuel……………………………………………15
8. Operation ……………………………………17
9. Maintenance …………………………………20
10. Storage ………………………………………24
11. Troubleshooting guide ………………………24
12. Parts list ………………………………………25

2. Specifications
■SRTZ2500
Overall size(LxWxH)························································ 67.9(1725)x9.8(250)x12.2(310) in(mm)
Dry weight w/o acc. ···························································································· 13.2 (6.0) lbs(kg)
Engine Type ········································································· Air-cooled 2-stroke gasoline
Model ··························································································· Zenoah GZ25N
Displacement ··········································································· 1.6cu-in (25.4cm3)
Max. output ······················································· 1.2Hp (0.9kW)at 7500/min-1(rpm)
Idle speed ·············································································3000±200/min-1(rpm)
Fuel ··········································································· Mixture(Gasoline 50 : Oil 1)
Carburetor ······································································· Walbro Diaphragm type
Spark plug ························································································NGK CMR7A
Fuel tank capacity·······························································································22.0 fl.oz (0.65 )
Transmission··········································································· Centrifugal clutch, Rigid driveshaft
Reduction ratio ························································································································· 4.0
Durability period················································································································· 300 hrs
Standard operation speed·····················································································8000~9500 rpm
Cutting head Type···········································································Reciprocating Double blade
Tooth·········································································································42 teeth
Pitch ···························································································1.18 (30) in (mm)
Effective cut width ····································································24.2 (615) in (mm)
Angle adjust range ··················90°(±45° from cutting head position aligned shaft)
Standard Accessories
Shoulder Strap ······························································································ 1 pc.
Goggle··········································································································· 1 pc.
Tool Kit ·········································································································· 1 pc.
Blade Cover ·································································································· 1 pc.
Specifications are subject to change without notice.
1. Parts location
1. Loop handle
2. Shoulder strap hanger
3. Ignition switch
4. Throttle cable
5. Throttle lever
6. Throttle set button
7. Drive shaft housing
8. Blade
9. Gear case
10. Spark arrester
11. Starter knob
12. Fuel tank
13. Primer pump
14. Choke lever
15. Air cleaner cover
4

5
(1) Read owner's manual before operating
this machine.
(2) Wear head, eye and ear protection.
(3) Handling this machine improperly
could result in accidents causing
serious injury or death. Read this
manual carefully and practice using
the trimmer until you are fully
acquainted with all operations and
have learned to use it correctly.
(4) Keep hands away from cutting blades.
If warning label peel off or become 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 trimmer.
We won't warrant the machine, if you use
the remodeled trimmer or you don't
observe the proper usage written in the
manual.
WARNING
IMPORTANT
(1) Lire le mode d’emploi avant d’utiliser
cette machine.
(2) Porter un casque de sécurité, des
lunettes de sécurité et un casque
antibruit.
(3) Lorsque cet l'appareil est utilisé
incorrectement, des accidents peuvent
entraîner des blessures graves ou
mortelles. Lire attentivement ce mode
d'emploi et s'entraîner avec le taille-
haies pour se familiariser avec toutes
les fonctions afin de l'utiliser
correctement.
(4) Eloigner les mains des lames de
coupe.
Si les étiquettes d’avertissement se
décollent, deviennent sales ou impossible à
lire, commander de nouvelles étiquettes
auprès du revendeur pour les remplacer.
Ne pas modifier la machine.
La garantie sera annulée si la machine a
été modifiée ou utilisée de manière non
conforme aux instructions de ce mode
d’emploi.
AVERTISSEMENT
IMPORTANT
3. Warning labels on the machine

6
For safe operation and maintenance, symbols are
carved in relief on the machine. According to these
indications, please be careful not to take a mistake.
(a) The port to refuel the "MIX GASOLINE"
Position: FUEL TANK CAP
(b) The direction to close the choke
Position: AIR CLEANER COVER
(c) The direction to open the choke
Position: AIR CLEANER COVER
4. Symbols on the machine
IMPORTANT ENGINE INFORMATION
ENGINE FAMILY : 5KZXS.0254QR ; EM
ENGINE DISPLACEMENT : 25cc
REFER TO OWNER’S MANUAL FOR MAINTE-
NANCE SPECIFICATIONS AND ADJUSTMENTS.
MANUFACTURED :
THIS ENGINE CONFORMS TO
2005 U.S. EPA REGULATIONS
FOR SMALL NONROAD ENGINES.
COMPLIANCE PERIOD : CATEGORY A
CE MOTEUR EST CONFORME A LA
REGLEMENTATION U.S. EPA 2005 POUR
LES PETITS MOTEURS HORS-ROUTE.
DUREE DE CONFORMITE : CATEGORIE A
TYPE DE MOTEUR : 5KZXS.0254QR ; EM
CYLINDREE DU MOTEUR : 25 cc
SE REFERER AU MANUEL DE L’UTILISATEUR POUR LES
SPECIFICATIONS D’ENTRETIEN ET LES REGLAGES.
FABRIQUE PAR :
INFORMATION IMPORTANTE CONCERNANT LE MOTEUR

5. For safe operation
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 whenever any questions arise. Also
note, if you have any questions which cannot
be answered herein, contact the dealer from
whom you purchased the product.
3. Always be sure to include this manual when
selling, lending, or otherwise transferring the
ownership of this product.
4. Never allow children or anyone unable to fully
understand the directions given in the manual
to use the machine.
■WORKING CONDITION
1. When using the product, you should wear proper
clothing and protective equipment.
(1) Helmet
(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 and files
(2) Properly reserved fuel
(3) Spare blade
(4) Things to notify your working area (rope,
warning signs)
(5) Whistle (for collaboration or emergency)
(6) Hatchet or saw (for removal of obstacles)
3. Do not wear loose clothing, jewelry, short
trousers, sandals, or go barefoot. Do not wear
anything which might be caught by a moving
part of the unit. Secure hair so it is above
shoulder length.
■WORKING CIRCUMSTANCE
1. Never start the engine inside a closed room or
building. Exhaust gases contain dangerous
carbon monoxide.
2. Never use the product,
a. when the ground is slippery or when you can’t
maintain a steady posture.
7

8
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 difficult 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.
■WORKING PLAN
1. You should never use the product when under
the influence of alcohol, when suffering from
exhaustion or lack of sleep, when suffering from
drowsiness as a result of having taken cold
medicine or at any other time when a possibility
exists that your judgment might be impaired or
that you might not be able to operate the product
properly and in a safe manner.
2. When planning your work schedule, 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 session,
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.
1. If you don’t observe the working time, or
working manner (See ■USING THE
PRODUCT), Repetitive Stress Injury(RSI)
could occur.
If you feel discomfort, redness and swelling
of your fingers or any other part of your
body, see a doctor before getting worse.
2. To avoid noise complaints, in general,
operate product between 8a.m. and 5p.m. on
weekdays and 9a.m. to 5p.m. weekends.
Check and follow the local regulations as to sound
level and hours of operations for the product.
NOTE
WARNING
5. For safe operation

■BEFORE STARTING THE ENGINE
1. The area within a perimeter of 50 feet (15m) 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 simultaneously by two or more
persons, care should also be taken to constantly
look around or otherwise check for the presence
and locations of other people working so as to
maintain a distance between each person
sufficient to ensure safety.
2. Check the condition of working area to avoid any
accident by hitting hidden obstacles such as
stumps, stones, cans, or broken grass.
Remove any obstacle before beginning 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 before starting the engine. The strap
should be adjusted to fit your body according as
your working posture.
■STARTING THE ENGINE
1. Keep bystanders and animals at least 50feet
(15m) away from the operating point. If you are
approached, immediately stop the engine.
2. The product is equipped with a centrifugal clutch
mechanism, so the cutting attachment begins to
rotate as soon as the engine is started by putting
the throttle into the start position. When starting
the engine, place the product onto the ground in
a flat clear area and hold it firmly in place so as
to ensure that neither the cutting part nor the
throttle come into contact with any obstacle
when the engine starts.
IMPORTANT
5. For safe operation
9

10 
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 attachment stops rotating when
the throttle is moved fully back to its original
position. If it continues to rotate even after the
throttle has been moved fully back, turn off the
engine and take the unit to your authorized Red
Max servicing dealer for repair.
■USING THE PRODUCT
Cut only materials recommended by the
manufacturer. And use only for tasks explained
in the manual.
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. Keep cutting attachment below waist level.
3. 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.
4. If the unit start to shake or vibrate, turn off the
engine and check the whole unit. Do not use it
until the trouble has been properly corrected.
5. Keep all parts of your body away from rotating
cutting attachment and hot surfaces.
6. Never touch the muffler, spark plug, or other
metallic parts of the engine while the engine is in
operation or immediately after shutting down the
engine. Doing so could result in serious burns or
electrical shock.
IMPORTANT
WARNING
5. For safe operation