Toro 38540, Operator'S Manual

Page: 26 / 32

17
Adjusting Traction Drive Belt
(Fig. 25)
If the wheels do not turn when the traction lever is
depressed, the traction belt tension should be
increased. Whenever the belt is replaced, an
adjustment is required.
1. Loosen upper jam nut securing traction cable to
mounting bracket.
2. Rotate bottom jam nut upward to increase belt
tension.
Note: When adjusting cable, always rotate
nut one full turn at a time.
3. Tighten upper jam nut against bracket.
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. 27)
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. 25). 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.