part number) facing the ground when the tractor is in the operating position. Carefully align “star” on blade with “star” on spindle. Secure with flange nut.

Blade Mounting Torque

Hex Flange Nut: 840 in. lb. min., 1080 in. lb. max.

All nuts and bolts must be checked periodically for correct tightness.

Belt Replacement

WARNING: Disconnect the spark plug wire(s) and ground it against the engine. Block the wheels of the unit.

NOTE: Figure 19 and Figure 22 are shown with the unit tipped up for clarity. It is not necessary to tip the unit to remove the belts. However, for convenience, if you decide to tip it, remove the battery from the unit first.

To prevent gasoline leakage, drain the gasoline, or remove the fuel tank cap. Place a thin piece of plastic over the neck of the fuel tank and screw on the cap. Be certain to remove the plastic when finished changing the belts. Block unit securely.

Deck Belt (38" and 42" Decks)

Place the lift lever in the engaged (all the way forward) position.

Disconnect the spring which is attached to a bracket on the transaxle, inside the right rear wheel. Use a spring puller or other suitable tool.

NOTE: When reassembling, make certain belt keeper pins are assembled in the same locations from which they were removed. See Figure 19 .

Belt Keeper Pins

Engine

Pulley

Figure 19

Place the lift lever in the BLADES STOP position.

Remove the belt keeper pins from the lower frame.

Unhook the deck belt from the engine pulley.

Place the lift lever in the engaged (all the way forward) position.

Disconnect the stabilizer plate from the stabilizer shaft assembly by removing the hairpin clips and flat washers and sliding out the rod.

Disconnect the six deck links by removing the hairpin clips and flat washers.

Place the lift lever in the BLADES STOP position.

Slide the deck from beneath the lawn tractor.

Remove the belt guards at each deck pulley by removing the self-tapping screws. See Figure 20 .

Remove and replace the belt, reassemble following the instructions in reverse order.

Stabilizer

PlateBelt

Guard

Self-Tapping

Screws

Deck

Pulleys

Belt Guard

Figure 20

Deck Belts (46" Deck)

Place the lift lever all the way forward.

Disconnect the spring which is attached to a bracket on the transaxle inside the right rear wheel. Use a spring puller or other suitable tool.

NOTE: When reassembling, make certain belt keeper pins are assembled in the same locations from which they were removed. See Figure 19 .

Place the lift lever in the BLADES STOP position.

Remove the belt keeper pins from the lower frame. Refer to Figure 19 .

Unhook the deck belt from the engine pulley.

Place the lift lever in the engaged (all the way forward) position.

Disconnect the stabilizer plate from the stabilizer shaft assembly by removing the hairpin clips and the flat washers and sliding out the rod. Refer to Figure 14 .

Disconnect the six deck links by removing the hairpin clips and flat washers.

Place the lift lever in the BLADES STOP position.

Slide the deck from beneath the lawn tractor.

Remove the top deck drive belt by lifting up on the stabilizer plate, and slipping belt off the pulley.

18

Page 18
Image 18
Yard Machines 690 Thru 699 manual Belt Replacement, Blade Mounting Torque, Deck Belt 38 and 42 Decks, Deck Belts 46 Deck