Cleaning Under The Deck; Inspecting The Belts; Replacing The Deck Belt - Toro 74225 Operator's Manual

Note: When properly adjusted, the front blade tip will be
slightly lower than the rear blade tip. See Checking for
Bent Blades on page 29 to measure.
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3
Figure 58
1. 19-17/32 in. (496 mm)
outside swivels
2. Top chain bolt
10. Recheck that blocks just fit just under the mower and
that tension on all four chains is approximately equal.
Tighten chain attachment bolts securely.
11. Measure height of cut. This can be checked with the
same procedure as Checking for Bent Blades on
page 29.
12. Install anti-scalp rollers for proper height-of-cut and
tighten securely.
Adjusting the Compression Spring
1. Raise deck lift lever to the transport position, (Fig. 57).
2. Springs are compressed so the distance between the
two large washers should be 11 in. (279 mm) (Fig. 58).
3. Adjust by turning nut in front of each spring (Fig. 58).
Clockwise will shorten spring; counterclockwise will
lengthen spring.

Cleaning Under the Deck

Remove grass build up under deck daily.
1. Position mower on a flat surface. Stop the engine, set
the parking brake, remove the key and disconnect the
spark plug wire(s) from the spark plug(s).
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2
m–3747
2
3. Front swivel
4. 11 in. (279 mm) spring
compressed
2. Raise deck to the transport position.
3. Raise front of machine by using the Z Stand. Refer to
Z Stand operation on page 25.
Danger
Unit could fall onto someone and cause serious
injury or death.
Use extreme caution when operating unit on
Z Stand.
Use only for cleaning deck and removing
blades.
Do not keep unit on Z Stand for extended
periods of time.
Always shut engine off and set parking brake
before performing any maintenance to deck.

Inspecting the Belts

Inspect all belts every 100 hours.
1. Check belts for cracks, frayed edges, burn marks or
any other damage. Replace damaged belts.

Replacing the Deck Belt

Squealing when the belt is rotating, blades slipping when
cutting grass, frayed belt edges, burn marks and cracks are
signs of a worn deck belt. Replace the deck belt if any of
these conditions are evident.
1. Stop the engine, set the parking brake, remove the key
and disconnect the spark plug wire(s) from the spark
plug(s).
2. Remove the PTO drive belt. Refer to Replacing the
PTO Drive Belt, on page 45.
3. Loosen two nuts securing idler plate and move the
idler arm to relieve belt tension on the idler pulley,
then remove the worn deck belt (Fig. 59).
4. Install the new deck belt around the spindle pulleys,
belt guide, the idler pulley, and in the lower groove of
the center spindle pulley (Fig. 59).
5. Using a socket and torque wrench, rotate the idler
adjusting nut until torque is 25–30 ft-lb. (34–41 N m).
Tighten two nuts.
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