MAINTENANCE
27
2. Use the included spark plug wrench and handle to
unscrew the spark plug from the engine. Remove the
spark plug from the engine.
NOTE:
Make sure to drain your carburetor before
storing the snow blower for long periods of time.
CAUTION!
Store the emptied gasoline in a suitable
place. Never store fuel for more than 2 months.
TIP:
There is limited space for the wrench to turn.
Use both rows of holes in the spark plug wrench to
gain leverage to loosen the plug.
Fig. 32
Fig. 33
3. Visually inspect the spark plug. If it is cracked or
chipped, or if the electrodes are worn or burned, discard
it and replace with a new spark plug. We recommend
replacing it with a Torch F7RTC/NGK BPR7ES spark
plug. These can be purchased from
wenproducts.com
by searching part number
SB24E-2008.
4. If re-using the spark plug, use a wire brush to clean
any dirt from around the spark plug base, then re-gap
the spark plug.
5. Measure the plug gap with a spark plug gap gauge.
The gap should be 0.7 to 0.8 mm (0.028-0.031 in).
Carefully adjust the gap if necessary. See Fig. 33.
6. Screw the spark plug back into the spark plug hole
using the spark plug wrench. Do not over-tighten spark
plug. Recommended tightening of the spark plug is ½
to ¾ of a turn after the spark plug gasket contacts the
spark plug hole, or 18.5 – 22 ft-lb torque (25 – 30 Nm).
7. Reinstall the spark plug boot over the spark plug.
DRAINING THE CARBURETOR
Drain the carburetor after every use and before storing
the snow blower (refer to the Recommended Mainte-
nance Schedule on page 23). Draining the carburetor
can help prevent build-up and blockages caused by
stagnant fuel inside of the carburetor.
1. Prepare an approved gasoline-storage container un-
der the carburetor to collect the drained fuel. Make sure
the fuel valve is turned OFF.
2. The carburetor can be accessed from the left side
of the snow blower, next to the cylinder head cover. To
drain the carburetor, open up the carburetor drain screw
(Fig. 32 - A) with a Phillips-head screwdriver and drain
out any gasoline that has built up inside.
3. Once the fuel has drained, close the drain screw.
A
B
DRAINING THE FUEL TANK
Drain and clean the fuel tank each year, or before storing
the snow blower for longer than two months.
1. Prepare an approved gasoline-storage container un-
der the carburetor. Make sure the fuel valve is turned
OFF.
2. Remove the carburetor drain screw. Set it aside.
3. Turn the fuel valve to ON and let the fuel tank drain
completely This may take a while, depending on how
much gasoline remains in the tank.
4. Once the fuel has drained, replace the drain screw
and turn the fuel valve OFF.
5. Start and run the engine until the fuel runs out. Then,
drain the carburetor.
