Loading ...
Loading ...
Loading ...
SERVICE AND ADJUSTMENTS
ADJUSTING PROCEDURE HIGH SPEED MIXTURE ADJUSTMENT "H"
IDLE SPEED ADJUSTMENT "T"
"Aliow the warm engine to idle
• Adjust the Idle Speed until the engine continues to run
without stalling and without the chain moving.
- Turn clockwise to increase engine speed if engine
stalls or dies.
- Turn counterclockwise to slow engine down and/or to
keep the chain from turning
• No further adjustments are necessary if chain does not
move at idle speed and if performance is satisfactory
LOW SPEED MIXTURE ADJUSTMENT "U'
• Allow engine to idle
, Turn the Low Speed Mixture Adjustment slowly clock-
wise until the RPM starts to drop. Note the position.
, Turn the Low Speed Mixture Adjustment slowly coum
terclockwise until the RPM speeds up and starts to
drop again. Note the position,
. Set the Low Speed Mixture at the midpoint between the
two positions.
IMPORTANT: DO NOT OPERATE ENGINE AT FULL
THROTTLE FOR PROLONGED PERIODS WHILE MAK-
ING HIGH SPEED ADJUSTMENTS AS DAMAGE TO
THE ENGtNE CAN OCCUR.
• Make a test cuL
• Based on performance of the saw while cutting, adjust
the high speed mixture in 1/16 turn increments as fol-
lows:
- Clockwise if saw loses power in the cut. Do not adjust
for best power by sound or speed, but judge by how
well the saw performs in the cut.
- Counterclockwise ff the saw has speed while out of
the cut, but dies in the cut or lacks power while cut-
ting_
o Repeat the lest cut.
° Continue with 1/16 turn adjustmenls until the saw per-
formance is acceptable while cutting
• After completing adjustments, check for acceleration°
ACCELERATION CHECK
• If the engine dies or hesitates instead of accelerating,
turn the Low Speed Mixture Adjustment 1/16 of a turn
at a time counterclockwise until you have smooth accel-
eration.
= Check the idle speed for stability and no chain move-
ment. Adjust as necessary..
o Recheck for smooth acceleration and stable idle
Repeat process as necessary for acceptable perfor-
mance.
28 -
Loading ...
Loading ...