Toro 38645 Operator's Manual page 19

Problem
Engine runs rough
Engine runs, but the snowthrower
discharges snow poorly or not at
all
19
Possible Causes
9. The engine oil level in the
engine crankcase is too low or
too high.
10.The air temperature is above
40 F (4 C) and the carburetor
heater box is on the
snowthrower.
1. The choke is in the On position.
2. The fuel shutoff valve is not
completely open.
3. The fuel tank is nearly empty or
contains stale fuel.
4. The spark plug wire is loose.
5. The spark plug is pitted, fouled,
or the gap is incorrect.
6. The engine oil level in the
engine crankcase is too low or
too high.
7. The air temperature is above
40 F (4 C) and the carburetor
heater box is on the
snowthrower.
1. The throttle is not in the Fast
position when throwing snow.
2. The snowthrower is moving too
fast to clear the snow.
3. You are trying to remove too
much snow per swath.
4. You are trying to remove
extremely heavy or wet snow.
5. The discharge chute is
plugged.
6. The auger/impeller drive belt is
loose or is off the pulley.
3329-808 Rev A
Corrective Action
9. Add or drain oil to adjust the oil
level in engine crankcase to the
Full mark on the dipstick.
10.Remove the carburetor heater
box.
1. Move the choke to the Off
position.
2. Open the fuel shutoff valve.
3. Drain and fill the fuel tank with
fresh gasoline (not more than
30 days old). If the problem
persists, contact an Authorized
Service Dealer.
4. Connect the wire to the spark
plug.
5. Check the spark plug and
adjust the gap if necessary.
Replace the spark plug if it is
pitted, fouled, or cracked.
6. Add or drain the oil level in the
engine crankcase to the Full
mark on the dipstick.
7. Remove the carburetor heater
box.
1. Move the throttle to the Fast
position.
2. Shift the snowthrower into a
lower gear.
3. Reduce the amount of snow
removed for per swath.
4. Don't overload the snowthrower
with extremely heavy or wet
snow.
5. Refer to Unclogging the
Discharge Chute on page 12.
6. Install and/or adjust the
auger/impeller drive belt; refer
to www.Toro.com for servicing
information or take the
snowthrower to an Authorized
Service Dealer.