Lubricating Snowthrower; Changing Crankcase Oil; Auger Gear Box Grease; Adjusting Auger/Impeller Drive Belt - Toro 622 Power Throw Operator's Manual

4. Open valve by rotating valve to the left. This
allows fuel to flow into drain pan.
5. Reinstall fuel line and secure with hose clamp.

Lubricating Snowthrower

Lubricate moving parts of the snowthrower after
every 15 hours of operation.
1. Pull wire off spark plug and make sure wire does
not contact plug accidentally.
2. Drain gasoline from fuel tank; refer to Draining
Gasoline, page 14.
3. Tip snowthrower forward onto auger/impeller
housing and block it so it cannot fall. Now,
remove four screws holding bottom cover in
place and remove cover (Fig. 20).
4. Lightly lubricate snowthrower with light oil and
grease as shown in Figure 21. Wipe up any
excess oil or grease.
IMPORTANT: Do not get oil or grease on
rubber wheel or friction drive plate because
the wheel will slip and the rubber may
deteriorate.
5. Reinstall bottom cover with (4) screws.

Changing Crankcase Oil

Initially, change oil after the first 2 hours of engine
operation; thereafter, under normal conditions, change
oil after every 25 hours of engine operation or
annually, whichever comes first. If possible, run
engine just before changing oil because warm oil
flows better and carries more contaminants than cold
oil.
1. Pull wire off spark plug and make sure wire does
not contact plug accidentally.
2. Block up the rear of the snowthrower chassis and
remove the left wheel.
15
3. Clean area around oil drain plug. Next, slide oil
drain pan below drain extension; then remove oil
drain plug (Fig. 22).
4. After all oil is drained, reinstall oil drain plug
and left wheel.
5. Position snowthrower on a level surface. Next,
fill crankcase with oil: refer to Fill Crankcase
With Oil, page 10. Wipe up any oil that may
have spilled.

Auger Gear Box Grease

The auger gear box grease level must be checked at
time of snowthrower assembly, after every 10 hours
of use and upon removal from annual storage. To
check the auger gear box grease level:
1. Position snowthrower on a level surface.
2. Pull wire off spark plug and make sure it does
not contact the plug accidentally.
3. Clean area around pipe plug so dirt is removed.
4. Remove pipe plug from gear box (Fig. 23).
5. Check level of grease in gear box. Grease must
be visible through opening.
6. If level of grease is low, add Lubriplate MAG-1
grease (a low temperature, high pressure grease,
Toro part no. 505–101) to the gear box until
point of overflow.
Note: Only use low temperature, high
pressure grease in gear box.
7. Reinstall pipe plug in gear box.
Adjusting Auger/Impeller Drive
Belt
If auger/impeller belt slips, resulting in decreased
snowthrowing performance, either an adjustment or a
new belt is required.
1. Pull wire off spark plug and make sure it does
not contact the plug accidentally.