Adjusting The Engine Idling Speed - Yamaha T135SE Service Manual

ADJUSTING THE ENGINE IDLING SPEED

b a
2
1
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)
Engine tachometer
90890-03113
4. Check:
9 engine idling speed
Out of specification → Adjust.
Engine idling speed
1,300–1,500 r/min
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.
Pilot air screw setting
1-5/8 turns out
c. Turn the throttle stop screw
a or b until the specified engine idling
speed is obtained.
aa
Direction
bb
Direction
3-11
http://www.motorcycle.in.th
CHK
ADJ
2 in direction
Engine idling speed is
increased.
Engine idling speed is
decreased.