Replacing The Pump Drive Belt; Replacing The Grass Deflector - Toro 74176 Operator's Manual

Note: Do not remove spring.
Caution
Spring is under tension when installed and can
cause personal injury.
Do not remove spring from spring eye bolt.
5. Remove spring loaded idler pulley (Fig. 57).
6. Route new belt through idler arm (Fig. 57).
7. Reinstall idler pulley and route belt onto other pulleys
(Fig. 58).
8. Retighten outer nut on spring eye bolt (Fig. 57).
Note: Check spring length. The spring should measure
9.375 .125 (238 mm .3 mm) when installed. Adjust if
it does not (Fig. 57).
9. Install belt covers over outside spindles.
4
2
Figure 58
Top View
1. Deck belt
2. Idler arm
3. Outside pulley

Replacing the Pump Drive Belt

Check pump drive belt for wear after every 50 hours of
operation.
1. Remove deck belt first. See Replacing the Deck Belt
on page 39.
2. Remove bolt from clutch strap and unplug clutch
electrical wire (Fig. 59).
3. Pull spring loaded idler to side. Remove traction belt
from the engine and hydro pump pulleys (Fig. 59).
1
5
3
4. Spring
5. Idler pulley
40
4. Install new belt around engine and hydro pump pulleys
(Fig. 59).
5. Pull spring loaded idler to side and align belt. Release
pressure on spring loaded idler (Fig. 59).
6. Reinstall deck belt.
3
5
4
Figure 59
1. Clutch strap
2. Bolt
3. Clutch electrical wire

Replacing the Grass Deflector

Warning
An uncovered discharge opening could allow the
lawn mower to throw objects in the operator's or
bystander's direction and result in serious injury.
Also, contact with the blade could occur.
Never operate the lawn mower unless you install a
cover plate, a mulch plate, or a grass chute and
catcher.
1. Remove the locknut, bolt, spring and spacer holding
the deflector to the pivot brackets (Fig. 60). Remove
damaged or worn grass deflector.
2. Place spacer and spring onto grass deflector. Place the
straight end of spring behind deck edge.
Note: Make sure the straight end of spring is installed
behind deck edge before installing the bolt as shown in
figure 60.
3. Install bolt and nut. Place hook end of spring around
grass deflector (Fig. 60).
Important The grass deflector must be able to lower
down into position. Lift the deflector up to test that it
lowers into the full down position.
1
6
2
4. Belt
5. Idler
6. Clutch