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 (25). (Fig Z)
L = LOW (Slow) run adjustment screw (26). (Fig AA)
T = Idling adjusting screw (24). (Fig AB)
1. Stop the engine and screw in both the H
and L screws (25 and 26) using the supplied
screwdriver (33). Do not force.
2. Turn the H screw (25) back 3/4 of a turn.
3. Turn the L screw (26) 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 (26) 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 (24)
anticlockwise until the chain does not turn.
7. If the idling speed is too slow, turn the “T” idling
adjusting screw (24) clockwise.
8. Make a test cut and adjust the H screw (25) for
best cutting power, not for maximum speed.
Z.
AA.
AB.
HIGH
LOW
IDLING
Adjusting the Carburettor
To Next Page
Loading...
