Zenoah G2500TS User Manual

OWNER/OPERATOR MANUAL

CHAINSAWS

T2040-93110(010)



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 products, please
read this manual carefully to
understand the proper use of your
unit.

WARNING

APPLICABLE SERIAL NUMBERS : 010101 and up

G2500TS

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

CONTENTS

1. Parts location …………………………………4

2. Specifications …………………………………4

3. Symbols on the machine ……………………5

4. For safe operation ……………………………6

5. Installing guide bar and saw chain …………8

6. Fuel and chain oil……………………………10

7. Operation ……………………………………12

8. Sawing ………………………………………16

9. Maintenance …………………………………19

10. Storage ………………………………………25

11. Troubleshooting guide………………………26

12. Parts list………………………………………27

WARNING

IMPORTANT

2. Specifications

■ G2500TS

Power unit :

Dis placement ····················································································· 1.6(25.4) cu-in(cm3)
Fuel ············································································· Mixture(Gasoline 32 : 2-cycle oil 1)
Fuel tank capacity ················································································· 7.78(0.23) fl.oz( )
Chain oil ························································································ Motor oil SAE #10W-30
Oil tank capacity ···················································································· 5.42(0.16) fl.oz( )
Carburetor ································································································· Diaphragm type
lgnition system ··································································································· Solid-state
Spark plug ···························································································· Champion RCJ-7Y
Oil feeding system ····································································· Mechanical plunger pump
Sprocket : Pitch – No. of teeth ··························································· 3/8in(9.38mm) – 6T
Dimensions : L – W – H ············································ 10.4(260)x8.8(220)x8.8(220) in(mm)
Dry weight ································································································ 6.4(2.85) lbs(kg)

Cutting attachment :

Guide bar : Type – Size ····················································· Sprocket nose – 12(30) in(cm)
Saw chain : Type – Pitch – Gauge ···················

Oregon 91VG – 3/8(9.375) – 0.050(1.25) in(mm)

Specifications are subject to change without notice.

1. Parts location

❲4❳

1. Guide Bar

2. Saw Chain

3. Front Guard

4. Front Handle

5. Rear Handle

6. Fuel Tank Cap

7. Oil Tank Cap

3. Symbols on the machine

❲5❳

Made in Japan

RedMax

IMPORTANT ENGINE INFORMATION

THIS ENGINE CONFORMS TO US EPA
PH1 FOR SMALL OFF-ROAD ENGINES.

ENGINE FAMILY : YKZXS.0254DE:EM
ENGINE DISPLACEMENT : 25.4cc

REFER TO OWNER'S MANUMAL FOR MAINTE­NANCE SPECIFICATIONS AND ADJUSTMENTS.

MANUFACTURED :

INFORMATION IMPORTANTE CONCERNANT LE MOTEUR

Ce moteur conformc aux normcs U.S. EPA
PH1 pour les petits moteurs tout-terrain.

Type de moteur :

YKZXS.0254DE:EM

Cylindrée du moteur :

25.4

cc

Se référer au Manuel de l'utilisateur pour les
spécifications d'entretien et les réglages.

Made in Japan

RedMax

Manufacturé :

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.

(a).The port to refuel the "MIX GASOLINE"

Position: Upper-front at the left side of the power unit (near the
fuel cap )

(b).The port to refuel the chain oil

Position: Lower-front at the left side of the power unit (near the
oil cap)

(c). Flipping the switch to the "O" position, immediately the engine

stops.
Position: Front at the top of the rear handle (near the switch)

(d).Starting the engine, if you pull out the choke knob (at the back-

right of the rear handle) to the point of the arrow, you can set the
starting mode as follows

• First-stage position – starting mode when the engine is warm.

• Second-stage position – starting mode when the engine is
cool.

Position: Upper-right of the chain cover

(e).If you turn the rod by screwdriver follow the arrow to the "MAX"

position, the chain oil flow more, and if you turn to the "MIN"
position, less.
Position: Bottom of the power unit

(f). The screw under the "H" stamp is The High-speed adjustment

screw.
The screw under the "L" stamp is The Slow-speed adjustment
screw.
The screw at the left of the "T" stamp is the Idle adjustment
screw.
Position: Left side of the rear handle

(g).It shows the directions that the chain brake is released (for the

white arrow) and activated (for the black arrow).
Position: Front of the chain cover

❲6❳

4. For safe operation

1. Never operate a chain saw when you are
fatigued, ill, or upset, or under the
influence of medication that may make
you drowsy, or if you are under the
influence of alcohol or drugs.

2. Use safety footwear, snug fitting clothing
and eye, hearing and head protection
devices.

3. Always use caution when handling fuel.
Wipe up all spills and then move the
chain saw at least ten(10)feet (three(3)
m) from the fueling point before starting
the engine.

3a) Eliminate all sources of sparks or

flame (ie. smoking, open flames, or
work that can cause sparks) in the
areas where fuel is mixed, poured, or
stored.

3b)Do not smoke while handling fuel or

while operating the chain saw.

4. Do not allow other persons to be near
the chain saw when starting the engine
or cutting a wood. Keep bystanders and
animals out of the work area. Children,
pets, and bystanders should be a
minimum of 30feet (10m) away when
you start or operate the chain saw.

5. Never start cutting until you have a clear
work area, secure footing, and planned
retreat path from the falling tree.

6. Always hold the chain saw firmly with
both hands when the engine is running.
Use a firm grip with thumb and fingers
encircling the chain saw handles.

7. Keep all parts of your body away from
the saw chain when the engine is
running.

8. Before you start the engine, make sure
the saw chain is not contacting anything.

9. Always carry the chain saw with the
engine stopped, the guide bar and saw
chain to the rear, and the muffler away
from your body.

10. Always inspect the chain saw before
each use for worn, Ioose, or changed
parts. Never operate a chain saw that is
damaged, improperly adjusted, or is not
completely and securely assembled. Be
sure that the saw chain stops moving
when the throttle control trigger is
released.

11. All chain saw service, other than the
items listed in the Operator’s Manual,
should be performed by competent chain
saw service personnel. (e.g., if improper
tools are used to remove the flywheel, or
if an improper tool is used to hold the
flywheel in order to remove the clutch,
structural damage to the flywheel could
occur which could subsequently cause
the flywheel to disintegrate).

12. Always shut off the engine before setting
it down.

13. Use extreme caution when cutting small
size brush and saplings because slender
material may catch the saw chain and be
whipped toward you or pull you off
balance.

14.When cutting a limb that is under
tension, be alert for spring back so that
you will not be struck when the tension in
the wood fibers is released.

15. Keep the handles dry, clean and free of
oil or fuel mixture.

❲7❳

4. For safe operation

16. Operate the chain saw only in well
ventilated areas. Never start or run the
engine inside a closed room or building.
Exhaust fumes contain dangerous
carbon monoxide.

17. Do not operate a chain saw in a tree
unless specially trained to do so.

18. Guard against kickback. Kickback is the
upward motion of the guide bar which
occurs when the saw chain at the nose
of the guide bar contacts an object.
Kickback can lead to dangerous loss of
control of the chain saw.

19. When transporting your chain saw, make
sure the appropriate guide bar scabbard
is in place.

20. This chain saw is equipped with a spark
arrester built-in muffler. Periodically
check the arrester to keep it in good
order.

KICKBACK SAFETY PRECAUTIONS FOR

CHAIN SAW USERS

– WARNING –

● Kickback may occur when the nose or tip of the guide bar touches an object, or when the
wood closes in and pinches the saw chain in the cut. Tip contact in some cases may
cause a lightning fast reverse reaction, kicking the guide bar up and back towards the
operator. Pinching the saw chain along the top of the guide bar may push the guide bar
rapidly back towards the operator. Either of these reactions may cause you to lose
control of the saw which could result in serious personal injury.

● Do not rely exclusively on the safety devices built into your saw. As a chain saw user you
should take several steps to keep cutting jobs free from accident or injury.

(1) With a basic understanding of kickback you can reduce or eliminate the element of

surprise. Sudden surprise contributes to accidents.

(2) Keep a good grip on the saw with both hands, the right hand on the rear handle, and

the left hand on the front handle, when the engine is running. Use a firm grip with
thumbs and fingers encircling the chain saw handles. A firm grip will help you reduce
kickback and maintain control of the saw. Don’t let go.

(3) Make certain that the area in which you’re cutting is free from obstructions. Do not let

the nose of the guide bar contact a log, branch, or any other obstruction which could

be hit while you are operating the saw.
(4) Cut at high engine speeds.
(5) Do not overreach or cut above shoulder height.
(6) Follow manufacturers sharpening and maintenance instructions for saw chain.
(7) Only use replacement bars and chains specified by the manufacturer or the

equivalent.

A standard saw unit package contains the items as
shown below. (SE1)

(1)Power unit
(2)Guide bar
(3)Saw chain
(4)Plug wrench

Open the box and install the guide bar and the saw
chain on the power unit as follows.

The saw chain has very sharp edges. Use
protective gloves for safety.

1. Pull the guard towards the front handle to check
that the chain brake is not on.

2. Loosen a nut and remove the chain cover.

3.Fix the hanger on the rear of power unit by
screw. (SE2)

(1)Hanger

4. Mount the guide bar then fit the saw chain
around the bar and sprocket.(SE3)

Pay attention to the correct direc-tion of the
saw chain

5. Fit the chain tensioner nut into the lower hole of
the guide bar, then install the chain cover, and
fasten the mounting nut to finger tightness.
(SE3)(SE4)

(1)Hole
(2)Moving direction
(3)Chain tensioner nut

When installing the chain cover, be sure to fit
the hook completely at the rear end of the
cover.

WARNING

5. Installing guide bar and saw chain

❲8❳

SE1

SE2

SE3

SE4

WARNING

WARNING

5. Installing guide bar and saw chain

❲9❳

SE5

SE6

6. While holding up the tip of the bar,adjust the
chain tension by turning the tensioner screw until
the tie straps just touch the bottom side of the
bar rail. (SE5)

(1)Chain tension adjusting screw
(a)Loosen
(b)Tighten

7. Tighten the mounting nut securely with the bar
tip held up (TORQUE: 11.8~14.7 N.m./120~150
kg-cm). Then check the chain for smooth
rotation and correct tension while moving it by
hand. If necessary, readjustment. (SE6)

(1)Tighten

It is very important to maintain the proper chain
tension. Rapid wear of the guide bar or the
chain coming off easily can be caused by
improper tension. Especially when using a new
chain, take good care of it since it should
expand when first used.

WARNING

❲10❳

6. Fuel and chain oil

■ FUEL

The RedMax engines are lubricated by oil specially
formulated for air-cooled 2-cycle gasoline engine
use. If RedMax oil is not available, use an anti­oxidant added quality oil expressly labeled for air­cooled 2-cycle engine use.

RECOMMENDED MIXING RATIO

GASOLINE 32 : OIL 1

Exhaust emission are controlled by the
fundamental engine parameters and
components (eq., carburation, ignition timing
and port timing) without addition of any major
hardware or the introduction of an inert
material during combustion.
These engines are certified to operate on
unleaded gasoline.

The fuel is highly flammable. Do not smoke or
bring any flame or sparks near fuel.

■ HOW TO MIX FUEL

1. Measure out the quantities of gasoline and oil to
be mixed.

2. Put some of the gasoline into a clean, approved
fuel container.

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.

5. Put a clear indication on the outside of the
container to avoid mixing up with gasoline or
other containers.

FOR YOUR ENGINE LIFE, AVOID;

1. FUEL WITH NO OIL(RAW GASOLINE) – It will
cause severe damage to the engine inner 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 or WATER
COOLED 2-CYCLE ENGINE USE – It can
cause spark plug fouling, exhaust port blocking,
or piston ring sticking.

WARNING

6. Fuel and Chain oil

■ CHAIN OIL

Use motor oil SAE 10W-30 all year round, or SAE
30-40 in summer and SAE 20 in winter.

Do not use waste or regenerated oil that can cause
damage to the oil pump.

NOTE

❲11❳