Cub Cadet 997 User Manual
Page 15

15
•
Remove the hex bolt from the rear of unit holding 
the transmission to the mower housing.
See Figure 17.
Figure 17
•
Tilt the transmission forward and loosen the idler 
pulley bolt and lock nut half a turn. See Figure 18.
Figure 18
•
Using a pair of pliers, pull back and rotate belt 
keeper bracket from the slot on the idler pulley.
•
Slide the belt out from between the belt keeper 
bracket and the idler pulley.See Figure 18.
•
Squeeze the belt together and push it forward, 
while pressing the control arm inward towards the 
deck and remove the six speed cable from the slot. 
See Figure 19.
Figure 19
•
Pivot the control arm down away from the pulley 
and belt.
•
Lift off the lower pulley assembly and remove the 
old belt from around the crankshaft. 
•
Place the new belt over the transmission pulley. 
Start the belt in the pulley groove and rotate the 
pulley until the belt is seated in transmission pulley. 
•
Place the belt between the idler pulley and the belt 
keeper bracket.
•
Using pliers, rotate the belt keeper bracket so that it 
snaps into slot on the idler bracket. 
•
Tighten the idler pulley bolt and lock nut half a turn.
•
Place the belt between the two pulley halves on the 
crankshaft. Make sure to route the belt inside the 
belt guard pin. See Figure 20.
Figure 20
IMPORTANT:
When replacing the belt, do not disas-
semble the lower pulley assembly.
•
Pinch both sides of the belt together so that the belt 
is not in the pulley groove, and the lower pulley can 
be pushed towards the engine. See Figure 21.
Figure 21
•
Pivot the control arm back to its original position 
and reinstall the six-speed cable into the slot.
See Figure 22.
Cutting Height
Adjustment
Hex Bolt
Wheel
Wheel
Belt Keeper 
Bracket
Belt
Transmission
Pulley
Bolt and
Locknut
Idler Pulley
Bracket
Idler 
Pulley
Transmission
Belt
Six-Speed
Control
Cable Slot
Arm
Belt
Belt
Tab
Guard Pin
Upper Pulley
Half
Lower Pulley
Half
Belt
Lower Pulley
Belt 
Guard Pin
Half
