RedMax GZ4000 User Manual
US-1
GZ4000
U
S
OWNER'S/OPERATOR'S
MANUAL
CHAINSAW
848-C50-93A3 (909)
GZ4000
WARNING
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.
APPLICABLE SERIAL NUMBERS :
720401 and up
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GZ4000
1. Parts location …………………………………………………3
2. Specifications …………………………………………………3
3. Warning labels on the machine ………………………………4
4. Symbols on the machine ……………………………………4
5. For safe operation ……………………………………………5
6. Installing guide bar and saw chain …………………………7
7. Fuel and chain oil………………………………………………8
8. Operation ……………………………………………………10
9. Sawing…………………………………………………………13
10. Maintenance …………………………………………………15
11. Maintenance of saw chain and guide Bar …………………17
12. Storage ………………………………………………………18
13. Disposal ………………………………………………………18
14. Troubleshooting guide ………………………………………18
Contents
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
WARNING
IMPORTANT
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1. Parts location
1. Front guard
2. Starter knob
3. Air cleaner cover
4. Choke knob
5. Throttle interlock
6. Right handle
7. Throttle lever
8. Engine switch
9. Fuel tank
10. Oil tank
11. Left handle
12. Saw chain
13. Guide Bar
2. Specifications
■ GZ4000
Power unit :
Displacement ·············································································································· 2.45(40.1) cu-in(cm
3
)
Fuel ······································································································· Mixture(Gasoline 50 : 2-cycle oil 1)
(when using RedMax genuine oil)
Fuel tank capacity ··········································································································· 10.4(0.31) fl.oz( )
Chain oil ·················································································································· Motor oil SAE #10W-30
Oil tank capacity ············································································································· 7.10(0.21) fl.oz( )
Carburetor ····································································································· Diaphragm type (ZAMA C1Q)
lgnition system ····················································································································· Pointless (CDI)
Spark plug ························································································································· Champion RZ7C
Oil feeding system ·············································································································· Automatic pump
Power····························································································································1.84/9,500 (kw/min
-1
)
Max speed································································································································13,000 (min
-1
)
Idle speed···································································································································2,700 (min
-1
)
Sprocket : Pitch – No. of teeth ····················································································· 3/8in(9.53mm) – 6T
Dimensions : L – W – H ··································································· 14.8(370)x9.4(235)x10.8(270) in(mm)
Dry weight : Power unit only ································································································ 9.5(4.3) lbs(kg)
Cutting attachment :
Guide bar : Type – Size ··············································································· Sprocket nose – 14(35) in(cm)
Saw chain : Type – Pitch – Gauge ···································· Oregon 91VG – 3/8(9.53) – 0.050(1.27) in(mm)
Specifications are subject to change without notice.
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GZ4000
3. Warning labels on the machine
(a) The port to refuel “MIX GASOLINE”
Position: Fuel cap
(b) The port to top up chain oil
Position: Oil cap
(c) Setting the switch to the “O” position,
the engine stops immediately.
Position: Rear-left of the unit
(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 cold.
Position: Upper-right of the aircleaner
cover
(e) 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
(f) Shows the directions that the chain
brake is released (white arrow) and
activated (black arrow).
Position: Front of the chain cover
(g) 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
4. Symbols on the machine
(1) Read operator's instruction book before operating this machine.
(2) Wear head, eye and ear protection.
(3) Use the chain saw with two hands.
(4) Warning! Danger of kickback.
(5) Read, understand and follow all warnings.
*1: The year will be changed every year of manufacturing.
*2: The initial number will be changed every year of
manufacturing.
USE JASO FD OR ISO L-EGD GRADE 50:1 OIL
MANUFACTURED:
THIS ENGINE MEETS U.S. EPA AND CALIFORNIA
EXH/EVP REGS FOR 2009*1 S.O.R.E.
ENGINE FAMILY :
9HQZS.0404FG*2 DISPL.:
40cc
EMISSION CONTROL SYSTEM :
EXH;EM
COMPLIANCE PERIOD : 125 HOURS
REFER TO OPERATOR'S MANUAL FOR MAINTENANCE, SPECIFICATIONS AND ADJUSTMENTS.
EMISSION CONTROL INFORMATION
■ EMISSION CONTROL
An emission control label is located on the engine.
For safe operation and maintenance, symbols are
carved in relief on the machine.
According to these indications, please be careful not
to make any mistake.
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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.
Use the vibration-proof glove.
3. Keep the saw chain sharp and the saw,
including the AV system, well maintained.
A dull chain will increase cutting time, and
pressing a dull chain through wood will
increase the vibrations transmitted to your
hands. A saw with loose components or
with damaged or worn AV buffers will also
tend to have higher vibration levels.
4. All the above mentioned precautions do
not guarantee that you will not sustain
whitefinger disease or carpal tunnel
syndrome. Therefore, continual and
regular users should monitor closely the
condition of their hands and fingers.
If any of the above symptoms appear,
seek medical advice immediately.
5. Always use caution when handling fuel.
Wipe up all spills and then move the chain
saw at least 3 m from the fueling point
before starting the engine.
6. Eliminate all sources of sparks or flame
(i.e. smoking, open flames, or work that
can cause sparks) in the areas where fuel
is mixed, poured, or stored.
7. Do not smoke while handling fuel or while
operating the chain saw.
8. Do not allow other persons to be near the
chain saw when starting or cutting. Keep
bystanders and animals out of the work
area. Children, pets and bystanders
should be a minimum of 10 m away when
you start or operate the chain saw.
9. Never start cutting until you have a clear
work area, secure footing, and a planned
retreat path from the falling tree.
10. 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.
5. For safe operation
11. Keep all parts of your body away from the
saw chain when the engine is running.
12. Before you start the engine, make sure
the saw chain is not contacting anything.
13. 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.
14. Always inspect the chain saw before each
use for worn, Ioose, or damaged 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.
15. All chain saw service, other than the items
listed in the Owner’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.)
16. Always shut off the engine before setting
it down.
17. 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.
18. 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.
19. Never cut in high wind, bad weather,
when visibility is poor or in very high or
low temperatures. Always check the tree
for dead branches which could fall during
the felling operation.
20. Keep the handles dry, clean and free of
oil or fuel mixture.
21. 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.
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22. Do not operate the chain saw in a tree
unless specially trained to do so.
23. 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.
24. When transporting your chain saw, make
sure the appropriate guide bar scabbard
is in place.
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 Iose 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.
(3) Make certain that the area in which you
are 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. For safe operation
(5) Do not overreach or cut above shoulder
height.
(6) Follow the manufacturer’s sharpening and
maintenance instructions for the saw
chain.
(7) Only use replacement bars and chains
specified by the manufacturer or the
equivalent.
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