Adjusting The Engine Idling Speed - Yamaha XP500 Service Manual

CHECKING THE EXHAUST GAS AT IDLE/

ADJUSTING THE ENGINE IDLING SPEED

a
1
b
7. Measure:
• carbon monoxide density
• hydrocarbon density
Out of specification → Replace the muffler
assembly.
Carbon monoxide density (when
catalytic converter is operating)
0.2 ~ 1.2%
(Reference value)
8. After replacing
recheck the exhaust gas at idle when cata-
lytic converter is operating.
EAS00052
ADJUSTING THE ENGINE IDLING SPEED
NOTE:
Prior to adjusting the engine idling speed, the
throttle bodies synchronization should be
adjusted properly, and the engine should have
adequate compression.
1. Remove:
• right side cover
Refer to "SIDE COVER MOULDINGS AND
LEG SHIELD".
2. Start the engine and let it warm up for sev-
eral minutes.
3. Check:
• engine idling speed
Out of specification → Adjust.
Engine idling speed
1,100 ~ 1,300 r/min
4. Adjust:
• engine idling speed
M MMM M MMM M M MMM
a. Turn the Idle adjust screw 1 in direction a
or b until the specified engine idling speed
is obtained.
Direction a
Direction b
L LLL L LLL L L LLL
3 - 22
CHK
ADJ
the muffler
M M MMM M M MMM M
Engine idling speed is
increased.
Engine idling speed is
decreased.
L L LLL L L LLL L
assembly,
M MMM M MMM
L LLL L LLL