17
Note: If auger/impeller drive belt is replaced
with a new belt, adjust auger/impeller
drive linkage. Refer to steps 4–6 of
Install Auger/Impeller Drive Control
Linkage, page 9.
14. Reinstall belt cover with (2) screws.
Adjusting
T
raction Drive
If speed selector shifts properly but snowthrower does
not drive in reverse or forward speeds, an adjustment
may be required.
1. Pull wire off spark plug and make sure it does
not contact the plug accidentally.
2. Check adjustment per steps 5 and 6 of Install
Traction Rod, page 8. Make adjustments if
required.
3. If linkage is adjusted correctly and problem
persists, contact your local Authorized Toro
Service Dealer.
Adjusting
Speed Selector
If there is slow or no ground speed in No.1 speed
selection, or speed selector cannot be moved into No.
3 speed selection, an adjustment of the speed selector
linkage is required.
1. Pull wire off spark plug and make sure wire does
not contact plug accidentally.
2. Remove (4) screws securing bottom cover to
frame. Remove cover (Fig. 20).
3. Loosen flange nuts securing selector plate to
control panel. This allows selector plate to move
freely for adjustment (Fig. 27).
4. Shift speed selector to third gear and push down
on speed selector plate to move drive assembly
to the right. Drive assembly should be 1/8” from
roll pin; if not, slide selector plate (Fig. 27) until
1/8” dimension is correct (Fig. 28).
5. With drive assembly 1/8” from contacting roll
pin, tighten flange nuts securing speed selector
plate.
6. Shift speed selector to R (REVERSE) and back
to third to check adjustment. If space between
roll pin and drive assembly is more than #/16 of
an inch (4.8 mm), repeat steps 2–4.
7. Reassemble bottom cover with (4) screws.
Replacing
Spark Plug
Use a Champion RJ–19LM spark plug or equivalent.
Set air gap at 0.030” (0.76 mm). Check spark plug
yearly or every 100 operating hours. If electrodes in
center of plug are dark or have deteriorated, install a
new plug.
1. Clean area around spark plug so foreign matter
cannot fall into cylinder when plug is removed.
2. Pull wire off spark plug (Fig. 29) and remove
plug from cylinder head.
IMPORTANT: A cracked, fouled or dirty
spark plug must be replaced. Do not sand
blast, scrape or clean electrodes because grit
may eventually r
elease fr
om the plug and fall
into the cylinder. The result will likely be
engine damage.
3. Set air gap between electrodes of new spark plug
at 0.030” (0.76 mm) (Fig. 30). Next, install
spark plug in cylinder head. Tighten plug to 15
ft–lb (20.4 Nm).
4. Push the wire onto the spark plug (Fig. 29).
Preparing
Snowthrower For
Storage
1. FUEL SYSTEM PREPARATION–
Note: A fuel stabilizer/conditioner is most
effective when mixed with fresh
gasoline.