Operating Tips - Toro 521 Operator's Manual

1. Remove (2) Phillips screws and (1) hex head
screw securing heater box in place (Fig. 17). Pull
choke knob off choke rod (Fig. 16).
2. Lift heater box up and away from the engine,
and reinstall choke knob on mounting pin.
IMPORTANT: Check auger and impeller to
ensure that both parts are not frozen but free to
rotate. Also, make sure discharge chute is not
obstructed. USE A STICK, NOT YOUR
HAND, TO REMOVE ANY
OBSTRUCTIONS.
1. Move throttle (Fig. 16) to FAST.
2. Open fuel shut–off valve below fuel tank
(Fig. 15).
3. Rotate choke (Fig. 16) to full choke position.
4. Rotate ignition key (Fig. 15) to ON.
5. Cover hole in center of primer with thumb and
push primer slowly three times. DO NOT
PRIME IF THE ENGINE HAS BEEN
RUNNING AND IS HOT.
Note: Excessive priming may cause flooding
of engine and failure to start.
6. Grasp recoil starter handle (Fig. 16) and pull it
out slowly until positive engagement results;
then pull vigorously to start the engine. Keep
firm grip on starter handle and return the rope
slowly.
Note: If engine does not start or if
temperature is –10 F (–23 C) or
below, additional priming may be
required. After each additional prime,
try to start the engine before priming
again.
7. After engine starts, immediately rotate choke
(Fig. 16) to 3/4 position. As engine warms up,
rotate choke to 1/2 position; then to OFF
position. If engine falters, return choke to 1/2
position. When engine warms sufficiently, rotate
choke to OFF position.
12
Before Stopping
1. Engage auger to clear any remaining snow from
inside the housing.
2. Run engine for a few minutes to help dry off any
moisture which may have accumulated on
engine.
3. With engine running, pull recoil starter with a
rapid, continuous full arm stroke three or four
times. This helps prevent possible freeze–up of
recoil starter due to extreme snow blowing
conditions.
Note: Pulling of recoil starter rope produces a
loud, clattering sound. This is not
harmful to the engine or the starter.
Stopping
1. Release traction and auger drive controls
(Fig. 15).
2. Move throttle (Fig. 16) to slow and rotate
ignition key (Fig. 15) to OFF.
3. Wait for all moving parts to stop before leaving
the operator's position (behind the handles).

Operating Tips

1. When snowthrower is not being used, close fuel
shut–off valve and remove key from the switch.
2. Remove snow as soon as possible after it falls.
This produces best snow removal results.
3. Adjust skids to match the type of surface being
cleaned; refer to Adjusting Skids, page 13.
4. The snowthrower is designed to clean snow
down to the contact surface, but there are times
when the front of the snowthrower may tend to
ride up. If this happens, reduce forward speed by
shifting into a lower gear. If front still tends to
ride up, lift up on both handles to hold down
front of snowthrower.