Checking The Ignition Timing - Yamaha Raptor 90 YFM90RA 2011 Service Manual

CHECKING THE IGNITION TIMING

EBS00058
CHECKING THE IGNITION TIMING
TIP
Engine idling speed and throttle cable free play
should be adjusted properly before checking
the ignition timing.
1. Remove:
2. Attach:
a
3. Check:
a. Warm up the engine and keep it at the
b. Visually check the stationary pointer
4. Detach:
5. Install:
TIP
The ignition timing is not adjustable.
3 - 14
• Shroud cap
• engine tachometer
• timing light
a
(to spark plug lead)
Inductive self-powered tachome-
ter
P/N. YU-8036-B
Engine tachometer
P/N. 90890-03113
Timing light
P/N. YM-33277-A, 90890-03141
• ignition timing
specified speed.
Engine speed
1,600 ~ 1,800 r/min
verify it is within the required firing range
indicated on the rotor.
Incorrect firing range
coil.
• timing light
• engine tachometer
• Shroud cap
CHK
ADJ
to
→
Check the pickup