Troubleshooting - Ariens Sno-Thro 921 Series Operator's Manual

PROBLEM PROBABLE CAUSE
Engine will not
crank/start.
Engine stops.
Engine
problems.
Does not
operate in
forward /
reverse.
Small rubber
beads collect in
frame.
Unit throws
snow poorly or
does not throw
snow.
Unit runs
briefly then
stops.

TROUBLESHOOTING

1. Fuel tank is empty.
2. Fuel shut-off valve closed.
3. Build up of dirt and residue
around governor/carburetor.
4. Key Switch not in run
position.
5. Electric starter not
functioning.
1. Out of fuel.
2. Fuel shut-off valve closed.
3. Mechanical jam in blower
rake or impeller.
4. Polluted fuel supply.
5. Faulty spark plug.
6. Plugged fuel cap vent.
1. See Engine Manual.
1. Friction disc worn out.
2. Traction belt not functioning.
3. Speed selector not adjusted
properly.
1. Friction disc wear.
1. Shear bolts broken.
2. Attachment clutch/brake not
adjusted properly.
3. Impeller is frozen in place.
4. Ice or debris is obstructing
auger.
5. Attachment drive belts
slipping, worn or damaged.
1. A build up of fumes in the
fuel tank is creating too
much pressure in the fuel
tank.
CORRECTION
1. Fill fuel tank (see FILLING FUEL
TANK on page 23).
2. Open fuel shut-off valve.
3. Clean area around
governor/carburetor.
4. Put Key Switch into run position.
5. Check for a bad starter or
connections.
1. Fill fuel tank (see FILLING FUEL
TANK on page 23).
2. Open fuel shut-off valve.
3. Turn off engine, remove key, and
wait for all moving parts to stop.
Check for and remove obstruction
and repair before restart.
4. Replace with clean fuel.
5. Replace or clean spark plug.
6. Replace fuel cap.
1. See Engine Manual.
1. Repair or replace friction disc. See
Friction Disc Replacement on
page 36.
2. Repair or replace traction drive belt.
See Traction Drive Belt Replacement
on page 35.
3. Adjust speed selector. See Speed
Selector Adjustment on page 31.
1. Normal friction disc wear. Chunks or
large pieces of rubber mean friction
disc should be checked and replaced
as necessary.
1. Replace shear bolts (see Shear Bolts
on page 30)
2. Adjust attachment clutch/brake (see
Attachment Clutch/Brake Adjustment
on page 32)
3. Move unit to a warm place to thaw.
4. With the engine off and auger
disengaged, check for obstructions
and remove.
5. To adjust belts see (see Attachment
Clutch/Brake Adjustment on
page 32) To replace belts see
Attachment Drive Belt Replacement
on page 34.
1. Carefully loosen the cap to the fuel
tank.
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