Yard Machines 690 Thru 699 - Manual (Page 19)

19
Figure 21
• Remove the belt cover at the two outside deck
pulleys, by removing the self-tapping screws. See
Figure 21 .
• Release the tension on the spring loaded idler by
pushing the idler toward the rear of the deck.
• Remove the belt from around the idler pulleys, and
remove from the three deck pulleys. See Figure 21 .
• Reassemble new belts, following instructions in
reverse order.
Drive Belt
• Depress the clutch pedal and set the parking brake.
• Remove the deck from the lawn tractor.
• Raise and block the front wheels of the lawn tractor
so you can work under it.
• Remove the transmission panel by removing the
parking brake knob, relief valve rubber boot and
truss machine screws.
• Raise the seat. Disconnect the battery cables.
Remove the battery from the unit.
• Disconnect the idler pulley spring which is attached
to a bracket on the frame, inside the left rear wheel.
Use a spring puller or other suitable tool. See
Figure 22 .
• Remove the three self-tapping screws from the
cooling fan. Remove the fan.
• Remove the center bolt, lock washer and flat
washer, and let the engine pulley drop down so the
belt is past the belt guards. See Figure 22 .
• Roll the belt off of top sheave of engine pulley, onto
the pulley hub.
• Remove the belt from the transmission pulley and
engine pulley, and remove from the unit.
• Reassemble using a new belt, following
instructions in reverse order.
Figure 22
Hydrostatic Transmission Cooling
The hydrostatic transmission is cooled by the oil, fan
and fins. If the hydrostatic transmission runs hot, check
to see if the fan is in operating condition, the oil level is
correct and the fins are clean.
NOTE: DO NOT use high pressure water spray or
steam to clean the hydrostatic transmission.
WARNING: Disconnect spark plug wire
and ground against engine before
performing any adjustments, repairs or
maintenance work on the tractor.
Fuel Filter
• Your unit is equipped with a replaceable in-line fuel
filter. Replace filter whenever contamination or
discoloration is noticed. Order replacement filter
through your authorized engine service dealer.
Cleaning Engine & Deck
• Any fuel or oil spilled on the machine should be
wiped off promptly. Grass, leaves, and other dirt
must not be left to accumulate around the cooling
fins of the engine or on any part of the machine.
• Clean the underside of the deck after each mowing.
Belt Cover
Belt Cover
Self-Tapping Screws
Deck
Pulley
Deck
Pulley
Self-Tapping
Screws
Idler
Pulley
Center Bolt,
Lock Washer &
Flat Washer
Engine
Pulley
Drive
Belt
Idler
Pulley
Idler
Pulley
Spring
Bracket
Transmission
Pulley