Toro 74163 - Replacing the Pump Drive Belt

42
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 outer nut on the spring eye bolt (Fig. 57).
2
M–4197
14
3
7
5
6
Figure 57
Top View
1. Outer nut
2. Idler pulley
3. Idler arm
4. Spring eye bolt
5. Spring
6. 9-3/8 ± 1/8 inch
(238 ± 3 mm)
7. Deck belt
5. Remove the belt. Start at the outside pulley and rotate
the belt off (Fig. 58).
Note: Dot not remove the spring from the eye bolt.
Spring is under tension when installed and can
cause personal injury.
Do not remove spring from spring eye bolt.
Caution
6. Remove spring loaded idler pulley (Fig. 57).
7. Route the new belt through the idler arm (Fig. 57).
8. Install the idler pulley and route the belt onto the other
pulleys (Fig. 58).
9. Tighten the outer nut on the spring eye bolt (Fig. 57).
Note: Check the spring length. The spring should measure
9-3/8 ± 1/8 inch (238 ± 3 mm) when installed. Adjust it if it
does not (Fig. 57).
10. Install the belt covers over the outside spindles.
1
2
3
4
5
M–4159
Figure 58
Top View
1. Deck belt
2. Idler arm
3. Outside pulley
4. Spring
5. Idler pulley
Replacing the Pump Drive Belt
Check the pump drive belt for wear after every 50 hours of
operation.
1. Remove the deck belt first; refer to Replacing the Deck
Belt, page 41.
2. Remove the bolt from the clutch strap and unplug the
clutch electrical wire (Fig. 59).
3. Pull the spring loaded idler to the side. Remove the
traction belt from the engine and hydro pump pulleys
(Fig. 59).
4. Install the new belt around the engine and hydro pump
pulleys (Fig. 59).
5. Pull the spring loaded idler to the side and align the
belt. Release pressure on the spring loaded idler
(Fig. 59).
6. Install the deck belt.