MTD 700 Series Professional Shop Manual page 65

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Belt guides
Hex spacer that looks like nut
Rear idler pulley
Proper belt routing
Two outer guides
One inner guide
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Stamped belt guards
Figure 5.52
Figure 5.53
Figure 5.54
Auto-Drive CVT Drive System
5d. Lower the pulley and drive belt enough to clear
the belt guards stamped into the frame. See
Figure 5.52.
5e. Remove the pulley from the crankshaft and set
it aside.
5f. Using a 1/2" socket, remove the rear flat idler
pulley from the double idler bracket.
See Figure 5.53.
NOTE: Make note of the order of parts. The hex spacer
looks like a nut but is used as a spacer.
5g. Walk the belt up and over the variable speed
pulley assembly above the transmission. Rotate
the variable speed pulley to help slip the belt
past the belt keepers.
5h. Install the new lower drive belt in the reverse
order of disassembly.
Belt installation notes
• Install only correct OEM belts. Incorrect belts may
cause problems that effect the performance and/or
safety of the tractor.
• The belt is routed inside the front spacer bolts.
See Figure 5.54.
• The spacer bolt in front of the double idler bracket
goes between the two courses of the belt.
• Apply a small amount of anti-seize compound to
the engine crankshaft before installing the crank-
shaft pulley.
• Apply a small amount of thread locking compound
such as Loctite 271
crankshaft bolt.
• Tighten the crankshaft bolt to a torque of 36-50 ft-
lbs (50-68 N-m).
• Thoroughly test the operation of the drive system
and all safety features before returning the tractor
to service.
TM (red) to the threads of the
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