PRIOR TO USE
Installing guide bar and saw chain
Open the box and install the guide bar and the saw chain on the
power unit as follows:
WARNING!
The saw chain has very sharp edges. Use thick protective
gloves for safety.
1. Pull the guard (1) towards the front handle to check that the chain
brake is not on.
2. Loosen the nuts and remove the chain cover. (Fig.2).
3. Gear the chain to the sprocket and, while fitting the saw chain
around the guide bar, mount the guide bar to the power unit.
Adjust the position of chain tensioner peg on the power unit to the
lower hole of guide bar.
4. Fit the chain cover to the power unit and fasten the nuts to finger
tightness.
5. While holding up the tip of the bar, adjust the chain tension by
turning the tensioner screw (located to the side of the guide bar)
until the tie straps just touch the bottom side of the bar rail.
6. Tighten the nuts securely with the bar tip held up (12~15N.m).
Then check the chain for smooth rotation and proper tension while
moving it by hand. If necessary, re-adjust with the chain cover
loose.
NOTE:
A new chain will stretch when first used. Check and re-adjust the
tension frequently as a loose chain can easily de-rail or cause rapid
wear of itself and the guide bar.
Fuel and chain oil
Fuel
• The motor uses two stroke fuel, a mixture of petrol and a 2 stroke
lubricant at 25:1
• Use a branded 90 octane or higher unleaded petrol.
NOTE two stroke fuel may separate, Shake fuel container
thoroughly before each use. Do not mix more fuel than you
expect to use within one month.
WARNING!
• Keep open flames away from the area where fuel is handled
or stored.
• Mix and store fuel only in an approved petrol container.
NOTE:
Most engine troubles are caused, directly or indirectly, by the fuel
used on the machine. Take special care when mixing.
Chain oil
Use motor oil SAE# 10W ~ 30 all year round or SAE #30 ~ #40 in
summer and SAE#20 in winter.
NOTE:
Do not use waste or re-generated oil as this will cause damage
to the oil pump.
OPERATING INSTRUCTIONS
Starting engine
1. Fill fuel and chain oil tanks respectively and tighten the caps
securely.
(A) Ignition Switch
(B) Choke Knob
2. Put the ignition switch to “I” position. (Fig. 3).
3. Pull out the choke knob to the starting position.
NOTE:
When re-starting immediately after stopping the engine, leave
the choke knob at the RUN position.
4. While holding the saw unit securely on the ground, pull the starter
rope vigorously.
WARNING!
Do not attempt to start the chainsaw whilst holding in one hand
as this can cause injury.
5. When engine fires, push in the choke knob and pull the
starter again to start the engine.
6. Allow the engine to warm up with the throttle lever pulled slightly.
WARNING!
Keep clear of the saw chain as it will start rotating once the
engine has started.
Check oil supply
After starting the engine, run the chain at medium speed and see if
chain oil is scattered off.
NOTE:
The oil tank should become nearly empty by the time fuel is
used up. Be sure to refill the oil tank every time when re-fuelling
the unit.
Adjusting carburettor (Fig. 4)
(A) L Needle
(B) H Needle
(C) Idle adjusting screw
The carburettor on your unit has been factory adjusted, but may
require fine tuning due to change in operating conditions. Before
adjusting the carburetor, make sure to renew the clean air/fuel filters
and use fresh, properly mixed fuel. When adjusting, take the
following steps:
NOTE:
Be sure to adjust the carburettor with the bar and chain
attached.
1. Stop engine and screw in both H and L needles until they stop.
Do not force or over tighten. Then set them back the intial number
of turns as shown below.
H Needle: ¾
L Needle: 1½
2. Start engine and allow it to warm up at half-throttle.
3. Turn L needle slowly clockwise to find a position where idling
speed is maximum, then set the needle back a quarter (
1
/
4
) turn
counterclockwise.
4. Turn idle adjusting screw (C) counterclockwise so that the saw
chain does not turn. If idling speed is too slow, turn the screw
clockwise. (Fig. 4.)
5. Make a test cut and adjust the H needle for best cutting power, not
for maximum speed.
Stopping engine
1. Release the throttle lever to allow the engine to idle for a few
seconds.
2. Put the ignition switch to the “O” (STOP) position.
CAUTION
Ensure the brake is fully operational prior to use.
To do this:
(1) Turn off the engine.
(2) Holding the chainsaw horizontally, release your hand from
the front handle, hit the tip of the guide bar to a stump or a piece
of wood, and confirm brake operation. Operating level varies
by bar size. (Fig. 5). In case the brake is not effective. Refer to
the g uarantee on the back of this manual about inspection and
repairing. The engine, if being kept rotated at high speed with the
brake engaged, will heat the clutch, causing a problem. When the
brake is operated while in operation, immediately release your
fingers from the throttle lever and keep the engine idling.
Fig.4
Fig.2
Fig.3
Fig.5
C
B
A
B
A
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