Replacing Drive Belts (Fig. 29); Adjusting Drive Chain (Fig. 30-32) - Toro 38590 Operator's Manual

4. Check tension of belt by operating machine.
Machine should begin to move forward when
traction lever is depressed approximately
halfway down toward handle grip. Turn engine
off and repeat steps until proper adjustment is
achieved.
IMPORTANT: Do not adjust the belt too tight
because it may cause snowthrower to creep
when traction lever is in disengaged position.
If this occurs, decrease belt tension.

Replacing Drive Belts (Fig. 29)

If auger/impeller belt or traction belt becomes worn,
glazed, stretched, oil-soaked or otherwise defective,
belt replacement is required.
1. Pull wire off spark plug and make sure it does
not contact the plug accidentally.
2. Remove (3) flange head capscrews holding belt
cover in place, and slide belt cover up cables
(Fig. 4).
3. Move speed shift control to N (neutral).
4. Remove (2) flange head capscrews securing idler
pulley assembly to engine frame. Remove idler
pulley assembly.
5. Remove capscrew and lockwasher securing half
sheave to front of pulley assembly.
6. Slide half sheave and auger/impeller belt off
crankshaft and remove belt from impeller pulley.
7. If replacing traction belt, slide middle pulley
section and belt off crankshaft and remove belt
from transmission pulley.
8. On control cable which corresponds to belt being
replaced, loosen jam nuts securing cable to
bracket (Fig. 27). Cable must be free to slide in
bracket when changing belt(s).
9. Reinstall belts by reversing procedure. Make
sure tabs in half sheave are inserted into
mounting grooves in middle pulley section
when reinstalling.
Note: Make sure idler pulleys are aligned
with belts when reinstalling idler
pulley assembly.
10. Readjust belts, refer to Adjusting Auger/Impeller
Drive Belt or Adjusting Traction Drive Belt.
POTENTIAL HAZARD
Improper adjustment may cause injury if
auger/impeller turns when disengaged.
WHAT CAN HAPPEN
Rotating impeller or auger can cut off or
injure fingers or hands.
HOW TO AVOID THE HAZARD
Keep face, hands, feet and any other part of
your body or clothing away from
concealed, moving or rotating parts.
Make certain that impeller brake arm
clearance is maintained.
Do not adjust the auger/impeller drive belt
too tight because it may cause the
auger/impeller to turn when the control
lever is in the disengaged position. If this
occurs, decrease belt tension.
Adjusting Drive Chain
(Fig. 30-32)
The drive chain must be adjusted to maintain 1/8-3/8
of an inch deflection mid span between transmission
and axle sprocket. Check chain deflection after every
25 hours of operation.
1. Pull wire off spark plug and make sure wire does
not contact plug accidentally (Fig. 33).
2. Make sure wheels are positioned in rear position,
move shift control into 2nd gear, and tip
snowthrower up onto front edge of
auger/impeller housing.
IMPORTANT: To adjust drive chain, the
snowthrower must be tipped up on front edge
of auger/impeller housing. However, before
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