Adjusting The Timing Chain - Yamaha YFM660FP Service Manual

ADJUSTING THE VALVE CLEARANCE/ADJUSTING THE TIMING CHAIN/
ADJUSTING THE IDLING SPEED
11.Install:
Engine side cover
●
Fuel tank
●
Front fender
●
Front carrier
●
Seat
●
Refer to "SEAT, CARRIERS, FENDERS
AND FUEL TANK".

ADJUSTING THE TIMING CHAIN

Adjustment free.
ADJUSTING THE IDLING SPEED
1.Start the engine and let it warm up for sev-
eral minutes.
2.Remove:
Seat
●
Fuel tank side panels
●
Refer to "SEAT, CARRIERS, FENDERS
AND FUEL TANK".
3.Attach:
Tachometer
●
(to the spark plug lead)
Inductive tachometer:
P/N. YU-8036-A
Engine tachometer:
P/N. 90890-03113
4.Check:
Engine idling speed
●
Out of specification → Adjust.
Engine idling speed:
1,450 ~ 1,550 r/min
3 - 16
CHK
ADJ