Kohler DK2 Power OPG777 Manuel De L'utilisateur page 24

POWER LOSS AT CUTTER WHEEL
1. Check your belt tension - slipping belts cause power loss
2. Check belts and replace worn belts
3. Belt tension should be set at 0.25" movement above and below belt normal position
4. Check your 4 engine mounting bolts, loose engine bolts will create loose belt tension
LOOSEN 4 ENGINE
MOUNTING BOLTS
24 | OPG777(D) man.
ADJUST BOLTS TO MOVE
THE ENGINE - CHANGING
TENSION ON BELTS
REMOVE 4 COVER BOLTS
AND REMOVE BELT
COVER