Yamaha YFM660RN, Руководство по обслуживанию, Страница: 73 / 328

3 - 17
CHK
ADJ
CHECKING THE IGNITION TIMING
CHECKING THE IGNITION TIMING
NOTE:
Engine idling speed and throttle cable free play
should be adjusted properly before checking
the ignition timing.
1.Attach:
●
Tachometer
●
Timing light
(to spark plug lead)
Timing light:
P/N. YM-33277-A, 90890-03141
2.Check:
●
Ignition timing
***********************************************
Checking steps:
●
Warm up the engine and keep it at the speci-
fied speed.
●
Remove the timing mark accessing screw
1
.
●
Visually check the stationary pointer
2
to
verify it is within the required firing range
3
indicated on the flywheel.
Incorrect firing range
→
Check the pulser coil
assembly.
●
Install the timing mark accessing screw.
***********************************************
3.Detach:
●
Timing light
●
Tachometer
Engine speed:
1,450 ~ 1,550 r/min