Yamaha GRIZZLY 660 Owner's Manual page 29

To lock the differential gear in four-wheel drive,
make sure the On-Command four-wheel-drive
switch is pushed in to the "4WD" position.
1. Differential gear lock lever
2. On-Command four-wheel-drive switch "2WD"/"4WD"
Stop the ATV, move the differential gear lock lever
to position (a), and then push the differential gear
lock switch in to the "LOCK" position. When the dif-
ferential gear is locked, the differential gear lock in-
dicator "DIFF. LOCK" will come on along with the
indicator " " in the multifunction meter display.
DIFF.
LOCK
1. On-Command differential gear lock switch "4WD"/"LOCK"
To release the differential gear lock, stop the ATV
and push the switch to the "4WD" position.
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