Yamaha GRIZZLY Ultramatic YFM660FP, Service Manual

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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.Remove:
●
Seat
●
Fuel tank side panel (left)
●
Engine side cover
Refer to “SEAT, CARRIERS, FENDERS
AND FUEL TANK”.
2.Attach:
●
Tachometer
●
Timing light
(to the spark plug lead)
3.Check:
●
Ignition timing
*****************************************************
Checking steps:
●
Warm up the engine and keep it at the speci-
fied speed.
●
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.
*****************************************************
Inductive tachometer:
P/N. YU-8036-A
Engine tachometer:
P/N. 90890-03113
Timing light:
P/N. YM-33277-A, 90890-03141
Engine speed:
1,450 ~ 1,550 r/min
T
R
.
.
Recoil starter bolt:
14 Nm (1.4 m • kg, 10.1 ft • Ib)
LOCTITE
®