Operator`s manual

Checking Spark Plug
WARNING! DO NOT check for spark with spark
plug removed. DO NOT crank engine with spark
plug removed.
WARNING! If the engine has been running, the
muffler will be very hot. Be careful not to touch the
muffler.
NOTE: Check the spark plug once a season or every 25 hours of
operation. Change the spark plug once a season or every 100
hours.
To ensure proper engine operation, the spark plug must be
properly gapped and free of deposits.
Remove the spark plug boot and use a spark plug wrench 1.
to remove the plug. See Figure 6-3.
Visually inspect the spark plug. Discard the spark plug 2.
if there is apparent wear, or if the insulator is cracked or
chipped. Clean the spark plug with a wire brush if it is to be
reused.
Measure the plug gap with a feeler gauge. Correct as 3.
necessary by bending side electrode. See Figure 6-4. The
gap should be set to .02-.03 inches (0.60-0.80 mm).
Check that the spark plug washer is in good condition 4.
and thread the spark plug in by hand to prevent cross-
threading.
After the spark plug is seated, tighten with a spark plug 5.
wrench to compress the washer.
NOTE: When installing a new spark plug, tighten 1⁄2-turn after
the spark plug seats to compress the washer. When reinstalling a
used spark plug, tighten 1⁄8- to 1⁄4-turn after the spark plug seats
to compress the washer.
CAUTION: The spark plug must be tightened
securely. A loose spark plug can become very hot
and can damage the engine.
Carburetor Adjustment
The carburetor is not user adjustable. Contact your authorized
service dealer for adjustment.
Lubrication
Drive and Shifting Mechanism
At least once a season or after every 25 hours of operation,
remove rear cover. Lubricate all chains, sprockets, gears,
bearings, shafts, and the shifting mechanism. Use engine oil or a
spray lubricant. Refer to Figure 6-5.
NOTE: Be careful not to get any oil on the aluminum drive plate
or rubber friction wheel. Doing so will hinder the snow thrower’s
drive system. Wipe off any excess or spilled oil.
Wheels
At least once a season, remove both wheels. Clean and coat the
axles with a multipurpose automotive grease before reinstalling
wheels.
Chute Directional Control
Once a season, lubricate the eye bolt bushing and the spiral with
3-in-1 oil.
Figure 6-3
Figure 6-5
Figure 6-4
Spark Plug
Spark Plug Boot
2
3
1
1. .030 (.76 mm) Gap
2. Electrodes
3. Porcelain
Hex Shaft
19se c t i O n 6 — Ma i n t e n a n c e & ad j u s t M e n t s