Toro 30722 Operator's Manual page 16

72" cutting unit
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REPLACING BLADE DRIVE BELTS
1
Lower the cutting unit to the shop floor. Remove covers on top
of the cutting unit and set covers aside. Loosen idler pulleys to
release tension of belts.
2.
Remove carriage bolts, lockwashers and nuts holding gear box
in place. Lift gear box off mounting plate and lay it on top of
the cutting unit.
3.
Remove belts from the spindle pulleys.
4.
Mount a belt on lower pulley groove of left spindle, slide belt
under belt idler mount plate and install around center spindle
pulley. Tension belt by levering idler pulley against belt and
tighten idler pulley flange nut (Fig. 12).
5.
Place the right spindle belt under the gear box mount plate and
the opposite end on top of the right spindle pulley. Place the
left spindle belt under the gear box mount plate and the oppo-
site end on top of the left spindle pulley. Mount the gear box
and loop the belts around the gear box pulley.
6.
Feed the right and left spindle belts over the pulleys by rotating
the cutter blades. Tighten the gear box mounting fasteners.
7.
Tension idler pulleys against both belts. Install covers on top of
the cutting unit.
REMOVING THE CUTTER BLADE
The blade must be replaced if a solid object is hit, the blade is out
of balance, worn or bent. Always use genuine TORO replacement
blades to ensure safety and optimum performance. Never use
blades made by other manufacturers because they could be danger-
ous.
Do not try to starighten a blade that is bent, and never weld a bro-
ken or cracked blade. Always use a new TORO blade to assure
safety.
1.
Raise the cutting unit to the highest position, shut the engine
off and engage the parking brake. Block the cutting unit to pre-
vent it from falling accidentally.
16
CAUTION
Figure 11
1.
Lower belt idler
2.
Flange nut
Figure 12
1.
Bushing
2.
Caster Arm

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