2002 Yamaha YFM660 Grizzly factory service and repair manual, Page 101Get this manual

2002 Yamaha YFM660 Grizzly factory service and repair manual, Page 101

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CHECKING THE IGNITION TIMING MEASURING THE COMPRESSION PRESSURE
4.Detach: Timing light Tachometer 5.Install: Engine side cover Fuel tank side panel (left) Seat Refer to "SEAT, CARRIERS, FENDERS