Toro TimeCutter Z420 - Mower Belt Maintenance; Installing the Mower

Figure 47
38 inch leveler bracket shown
1. Leveling bracket 3. Adjusting rod
2. Hairpin cotter and washer
7. Slide the mo w er rearw ard to remo v e the
mo w er belt from the engine pulley .
8. Slide the mo w er out from under neath the
mac hine .
Note: R etain all par ts for future installation.
Mower Belt Maintenance
Inspecting the Belts
Inspect all belts ev er y 100 hours .
Chec k the 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
Squealing when the belt is rotating, blades slipping
when cutting g rass , fra yed belt edg es , bur n marks ,
and crac ks are signs of a w or n mo w er belt. R e place
the mo w er belt if any of these conditions are
evident.
1. P ark the mac hine on a lev el surface and
diseng ag e the blade control switc h.
2. Mo v e the motion control lev ers to the brak e
position, 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. Set the height-of-cut at A [1-1/2 inc h (38 mm)].
4. R emo v e the belt co v ers o v er the outside
spindles and loosen the belt guide ( Figure 48 ).
Figure 48
1. Mower belt 5. Engine pulley
2. Idler arm 6. Belt cover
3. Outside pulley 7. Belt guide
4. Spring
8. Idler pulley
5. Pull the idler pulley in the direction sho wn in
Figure 48 and roll the belt off of the pulleys .
T he spring is under tension when
installed and can cause per sonal injur y .
Be car eful when r emo ving the spring .
6. R oute the new belt around the engine pulley
and mo w er pulleys ( Figure 48 ).
7. Pull the idler pulley in the direction sho wn
in Figure 48 and route the belt onto the idler
pulley ( Figure 48 ).
8. R otate the belt guide , on the idler ar m, to w ards
the pulley until it stops ( Figure 48 ).
9. Tighten the belt guide ( Figure 48 ).
10. Install the belt co v ers o v er the outside spindles .
Installing the Mower
1. P ark the mac hine on a lev el surface and
diseng ag e the blade control switc h.
2. Mo v e the motion control lev ers to the brak e
position, stop the engine , remo v e the k ey , and
34