Troy-Bilt 42000 - Manual (Page 23)

Section 5: Maintenance (continued)
Annually or every 100 hours of
operation, remove and inspect the spark
plug. Reset the gap to the specifications
indicated in the engine owners manual.
Best results are obtained with a new
plug. Replace the plug if it is cracked,
badly worn or otherwise damaged. Refer
to the engine owners manual for correct
spark plug specifications. USING AN
INCORRECT PLUG CAN DAMAGE THE
ENGINE.
Under good operating conditions,
the plug will have a light gray coating or a
tan deposit. A dull white, blistered
coating could indicate an over-rich fuel
mixture caused by a clogged air cleaner
or improper carburetor adjustment.
Note: Do not clean the park plugs In
machines which use abrasive grit.
Clean spark plugs by scraping or wire
brushing or washing with a commercial
solvent.
Engine air cieaner
Refer to the engine owner manual
for engine air cleaner maintenance
instructions.
Carburetor
The carburetor has been adjusted at
the factory and should not require
additional adjustment. If a black exhaust
poorly service or clogged air cleaner
element, not an improperly adjusted
carburetor. Contact your dealer or our
service department for additional
carburetor information.
Lubrication
Lubricate the unit at the beginning
and the end of each season. This will
prepare the unit for peak performance for
the first snowfall and will prevent
corrosion at friction points during the off­
season.
1. Use clean engine oil or a silicone
spray to lubricate the control lever
pivot points (A, Fig. 5-3).
2. Clean any dirt off the worm gear and
the toothed part of the flange (B) at
the bottom of the discharge chute.
Apply multi-purpose grease to the
worm gear and the toothed part of the
fiange.
shaft. Wipe off any excess oil.
4. Use clean engine oil or a silicone
spray to lubricate the deflector cap
pivot points (D).
5. Securely block the unit and remove
the wheels. Apply multi-purpose
grease to the axle shaft (for easier
wheel removal).
6. Move the unit to a level area and
inspect the auger gear case oil level
as follows:
a. Remove the drain plug (F) from the
auger gear case: oil should just
begin to flow out of the hole.
b. Inspect the oil for grit and burned
odors. Fill as needed with SAE 90
gear oil.
c Replace and tighten the drain plug
(F) on the auger gear case.
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