AC.
The oil pump is ONLY operating while the chain (20)
is rotating so at idle the oil is NOT being pumped
through the oil system. If there is no line of chain oil
after a few minutes, stop the engine immediately
and investigate the cause. The oil tank (6) could
be empty or the oil supply to the chain blocked.
This may require removal of the guide bar (19) and
checking that the upper oil hole in the bar is clear
of any blockages (Fig AC).
Adjusting the Carburettor
NOTE: It is preferred the above operation is
performed by a service centre to ensure the correct
setting for both safety and performance.
The carburettor is factory set and should not
require adjustment.
Changes in operating conditions may require fine
tuning of the carburettor. Proceed as follows.
H = HIGH (Fast) run adjustment screw (26). (Fig AD)
L = LOW (Slow) run adjustment screw (27). (Fig AE)
T = Idling adjusting screw (25). (Fig AF)
1. Stop the engine and screw in both the H
and L screws (26 and 27) using the supplied
screwdriver (34). Do not force.
2. Turn the H screw (26) back 3/4 of a turn.
3. Turn the L screw (27) back 1-1/2 turns.
4. Start the engine and let it warm up with the
throttle trigger (3) half pulled in. When the
engine is warm, release the throttle trigger (3).
5. Turn the L screw (27) slowly clockwise until the
idling speed is at its maximum then turn the
screw back (anticlockwise) 1/4 of a turn.
6. Turn the “T” idling adjusting screw (25)
anticlockwise until the chain does not turn.
7. If the idling speed is too slow, turn the “T” idling
adjusting screw (25) clockwise.
8. Make a test cut and adjust the H screw (26) for
best cutting power, not for maximum speed.
AD.
AE.
A F.
HIGH
LOW
IDLING
Adjusting the Carburettor
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