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SERVICE AND ADJUSTMENTS
ADJUSTING PROCEDURE HIGH SPEED MIXTURE ADJUSTMENT"H"
IDLE SPEED ADJUSTMENT -'r"
• Allowthe warm engine to idle.
• Adjustthe IdleSpeed untiltheengine continuesto run
withoutstallingand without the chain moving.
- Turn clockwiseto increase engine speed if engine
stalls or dies.
- Turn counterclockwiseto slow engine downand/or
to keep the chain from turning.
No further adjustments are necessary if chain does
not moveat idle speed and ifperformanceissatisfac-
tory.
LOW SPEED MIXTURE ADJUSTMENT "L"
• Allow engine to idle.
• Turn the Low Speed Mixture Adjustmentslowlyclock-
wise untilthe RPM starts to drop.Note the position.
• Turn the Low Speed Mixture Adjustmentslowlycoun-
temlockwise 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
MAKING HIGH SPEED ADJUSTMENTS AS DAMAGE
TOTHE ENGINE CAN OCCUR.
• Make a testcut.
• Basedon pedormance ofthe saw whilecutting,adjust
the high speed mixturein1/16 turnincrements as fol-
lows:
- Clockwiseifsaw smokesor losespower in the cut.
Do notadjustforbestpowerby soundor speed, but
judge byhow well thesaw performs in the cut.
- Counterclockwiseifthe saw has speed while out of
thecut, but dies in thecutor lackspower while cut-
ting.
• Repeat the test cut.
• Continuewith 1/16 turnadjustmentsuntilthe saw per-
formanceis acceptable whilecutting.
• Aftercompletingadjustments,checkforacceleration.
ACCELERATION CHECK
• Ifthe enginedies or hesitatesinsteadof accelerating,
turnthe LowSpeed MixtureAdjustment1/16 of a turn
at a time Counterclockwiseuntil you have smooth
acceleration.
• Check the idlespeed for stabilityand no chain move-
ment.Adjustas necessary.
• Recheck for smooth acceleration and stable idle.
Repeat processas necessary for acceptable perfor-
rnance.
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