Adjusting The Push Arms; Cleaning Under The Mower; Inspecting The Belts; Replacing The Mower Belt - Toro 74413 Operator's Manual

Adjusting the Push Arms

If needed, adjust the push arms to increase or decrease the
mower belt tension.
1. Loosen the jam nut and rotate the ball joint
counterclockwise, one turn at a time.(Fig. 55).
3
1
Figure 55
1. Push arm
2. 13-1/2 inch (343 mm)
nominal at 15 twist
2. Adjust each side the same amount. Each push arm
should have a nominal length of 13-1/2 inch (34 cm) at
a 15-degree twist (Fig. 55).
Note: Increase the tension by lengthening the push arms;
decrease the tension by shortening the push arms.

Cleaning Under the Mower

Remove grass buildup under the mower housing daily.
1. Position the mower on a flat surface.
2. Disengage the PTO, move the motion control levers to
the neutral locked position, and set the parking brake.
3. Stop the engine, remove the key, and wait for all
moving parts to stop before leaving the operating
position.
4. Raise the mower housing to the transport position.
5. Lift the front of the machine and support the machine
using jack stands.
Danger
Mechanical or hydraulic jacks may fail to support
machine and cause a serious injury.
Use the jack stand when supporting the
machine.
Do not use hydraulic jacks.
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2
m–7705
3. Jam nut
4. Ball joint
41

Inspecting the Belts

Inspect all belts every 250 hours.
Check belts for cracks, frayed edges, burn marks, or any
other damage. Replace damaged belts.

Replacing the Mower Belt

The signs of a worn mower belt are squealing while the belt
is rotating, blades slipping while you are cutting grass,
frayed belt edges, burn marks, and cracks. Replace the
mower belt if you detect any of these signs.
1. Disengage the PTO, move the motion control levers to
the neutral locked position, and set the parking brake.
2. Stop the engine, remove the key, and wait for all
moving parts to stop before leaving the operating
position.
3. Remove the belt covers over the outside spindles.
4. Loosen the fixed idler arm and adjust it to relieve the
belt tension on the fixed idler pulley (Fig. 56).
3
2
1
Figure 56
1. Fixed idler arm
2. Square hole
3. Fixed Idler pulley
5. Remove the old belt.
6. Install the new belt through the belt guide and on the
pulleys (Fig. 56).
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6
m–7711
4
4. Mower belt
5. Belt guide
6. Spring-loaded idler pulley