a
b
2
1
CHK
ADJ
3-11
5. Adjust:
9
engine idling speed
✭✭✭✭✭✭✭✭✭✭✭✭✭✭✭✭✭✭✭✭✭✭✭✭
a. Turn the pilot air screw
1
in or out until it is
lightly seated.
b. Turn the pilot air screw out the specified
number of turns.
c. Turn the throttle stop screw
2
in direction
a
or
b
until the specified engine idling
speed is obtained.
✬✬✬✬✬✬✬✬✬✬✬✬✬✬✬✬✬✬✬✬✬✬✬✬
Pilot air screw setting
1-5/8 turns out
ADJUSTING THE ENGINE IDLING SPEED
EAS00054
ADJUSTING THE ENGINE
IDLING SPEED
NOTE:
Prior to adjusting the engine idling speed, the air
filter element should be clean, and the engine
should have adequate compression.
1. Remove:
9
side cowlings (left and right)
9
front cowling
9
rear cowling (left)
Refer to “REMOVING THESIDECOWL-
INGS”, “REMOVING THE FRONTCOWL-
ING” and “REMOVINGTHEREARCOWL-
INGS”.
2. Start the engine and let it warm up for sev-
eral minutes.
3. Connect:
9
engine tachometer
(onto the spark plug lead)
4. Check:
9
engine idling speed
Out of specification
→
Adjust.
Engine tachometer
90890-03113
Engine idling speed
1,300–1,500 r/min
Direction
aa
Engine idling speed is
increased.
Direction
bb
Engine idling speed is
decreased.
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