Toro Z149 Z Master 74411 - Replacing the Mower Belt; Replacing the Pump Drive; Belt

Chec k belts for crac ks , fra yed edg es , bur n marks
or any other damag e . R e place damag ed belts .
Replacing the Mower Belt
T he signs of a w or n mo w er belt are squealing
while the belt is rotating, blades slipping while y ou
are cutting g rass , fra yed belt edg es , bur n marks ,
and crac ks . R e place the mo w er belt if y ou detect
any of these signs .
1. Diseng ag e the PTO , mo v e the motion control
lev ers to the neutral loc k ed position, and set
the parking brak e .
2. Stop the engine , remo v e the k ey , and w ait for
all mo ving par ts to stop before lea ving the
operating position.
3. R emo v e the belt co v ers o v er the outside
spindles .
4. Loosen the outer n ut on the spring eye bolt
( Figure 45 ).
Figure 45
1. Outer nut
5. Spring
2. Idler pulley
6. 9-3/8 + 1/8 inch (238 + 3
mm)
3. Idler arm 7. Mower belt
4. Spring eye bolt
5. R emo v e the old belt.
Note: Star t at the outside pulley and rotate
the belt off ( Figure 46 ).
Note: Dot not remo v e the spring from the
eye bolt.
T he spring is under tension when
installed and can cause per sonal injur y .
Do not r emo v e the spring fr om the spring
ey e bolt.
6. R emo v e the spring loaded idler pulley
( Figure 45 ).
7. R oute the new belt through the idler ar m
( Figure 45 ).
8. Install the idler pulley and route the belt onto
the other pulleys ( Figure 46 ).
Figure 46
1. Mower belt
4. Spring
2. Idler arm 5. Idler pulley
3. Outside pulley
9. Tighten the outer n ut on the spring eye bolt
( Figure 45 ).
Note: Chec k the spring length. T he spring
should measure 9-3/8 + 1/8 inc h (238 + 3
mm) when installed. Adjust it if it does not
( Figure 45 ).
10. Install the belt co v ers o v er the outside spindles .
Replacing the Pump Drive
Belt
Chec k the pump dri v e belt for w ear after ev er y
50 operating hours .
1. R emo v e the mo w er belt first; refer to R e placing
the Mo w er Belt.
2. R emo v e the bolt from the clutc h stop and
unplug the clutc h electrical wire ( Figure 47 ).
3. Pull the spring loaded idler to the side .
4. R emo v e the traction belt from the engine and
the h y draulic pump pulleys ( Figure 47 ).
5. Install the new belt around the engine and the
h y draulic pump pulleys ( Figure 47 ).
6. Pull the spring-loaded idler to the side and
align the belt.
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