2002 Yamaha YFM660 Grizzly factory service and repair manual, Page 25Get this manual

2002 Yamaha YFM660 Grizzly factory service and repair manual, Page 25

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FEATURES
In addition, the 4WD (Diff-Lock) mode can be engaged only when the ATV is stoppedEven if an attempt is made to select this mode when the ATV is traveling, it will only result in standby