Husqvarna K 770 Dry Cut Operator's Manual page 129

To replace the drive belt
1. Loosen the 3 nuts on the front drive belt cover.
Loosen the drive belt tension with the adjuster
screw.
2. Remove the screw and the nuts. Remove the front
belt guard.
3. Remove the 3 screws on the rear belt guard.
Remove the belt guard.
861 - 004 - 27.02.2019
4. Remove the 7 screws on the fan housing fully and
remove the fan housing and the top section of the
connection bend.
5. Turn the fan until you see the 2 screws. Remove the
2 screws.
6. Remove the belt from the forward pulley. Remove
the fan.
7. Remove the drive belt.
8. Install the new drive belt.
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