MTD YARD MACHINES 607 Operator's Manual page 22

Variable-speed
Pulley
Single-speed
Transmission
NOTE:
View shown from above tractor.
Changing the Transmission Drive Belt
WARNING:
remove ignition key, disconnect the spark
plug wire(s) and ground against the engine to
prevent unintended starting before removing
the belt(s)
All belts on your tractor are subject to wear and should
be replaced if any signs of wear are present.
The V-belts found on your tractor are
IMPORTANT:
specially designed to engage and disengage safely. A
substitute (non-OEM) V-belt can be dangerous by not
disengaging completely. For a proper working machine,
use factory approved belts.
To change or replace the drive belt on your tractor,
proceed as follows:
• Remove the cutting deck as instructed earlier in this
section.
• After disconnecting the battery cables, remove the
battery and battery tray from beneath the seat.
Battery Tray
Shift Lever
Opening
Idler Bracket
Transmission Idler Pulley
Transmission Pulley
Be sure to shut the engine off,
Rear Idler Pulley
Belt Keeper
Front Idler Pulley
Double-Idler Bracket
Front of Tractor
Figure 19
When removing the battery, disconnect
IMPORTANT:
the NEGATIVE (Black) wire from it's terminal first,
followed by the POSITIVE (Red) wire. Re-install in
reverse order.
Upper Drive Belt
• Locate the transmission idler pulley on the upper
drive belt by looking through the battery tray
opening. See Figure 19.
• Grasp the bracket and pivot the transmission idler
pulley toward the rear of the tractor to release
tension on the upper drive belt.
• Remove the belt from around the transmission idler
pulley.
• Remove the upper drive belt from around the
transmission pulley and the variable-speed pulley.
NOTE:
Slowly rotate the pulley counterclockwise to
roll the belt off of it.
• Remove the upper drive belt by pulling it up through
the battery tray opening.
• Reroute the new upper drive belt as shown in
Figure 19.
22
Drive belt (Lower)
Drive belt (Upper)
Keeper Pins
to drive pedal
Engine Pulley