Yamaha YFM660FS Grizzly 4x4 Supplementary Service Manual page 170

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.Remove:
G
G
G
2.Attach:
G
G
3.Check:
G
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Checking steps:
G
G
G
G
G
G
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Seat
Fuel tank side panel (left)
Engine side cover
Refer to "SEAT, CARRIERS, FENDERS
AND FUEL TANK".
Tachometer
Timing light
(to the spark plug lead)
Inductive tachometer:
P/N. YU-8036-A
Engine tachometer:
P/N. 90890-03113
Timing light:
P/N. YM-33277-A, 90890-03141
Ignition timing
Warm up the engine and keep it at the speci-
fied speed.
Engine speed:
1,450 ~ 1,550 r/min
Remove the recoil starter 1.
Remove the timing plug 2.
Visually check the stationary pointer 3 to
verify it is within the required firing range 4
indicated on the flywheel.
Incorrect firing range → Check the pulser coil
assembly.
Install the timing plug.
Install the recoil starter.
Recoil starter bolt:
14 Nm (1.4 m • kg, 10.1 ft • Ib)
®
LOCTITE
CHK
ADJ