PAGE 34 — HDA SERIES WALK-BEHIND TROWEL • OPERATION MANUAL — REV. #0 (12/1/17)
MAINTENANCE
General maintenance practices are crucial for the
performance and longevity of your trowel. This equipment
requires routine cleaning, lubrication, and inspection of
components for wear or damage.
Refer to Table 6 and Table 7 for engine and trowel
maintenance schedules. The following maintenance
procedures can prevent serious trowel malfunction or
damage.
ENGINE MAINTENANCE
Inspect the engine daily for cleanliness.
MAKE SURE there
are no oil or fuel leaks and that all fasteners are tightened
securely.
Air Cleaner
The engine air cleaner is equipped with a replaceable,
high-density, paper element. Refer to Figure 50 for air
cleaner maintenance procedures.
DANGER
NEVER use gasoline or low flash point
solvents to clean the engine or any of its
components.
Fire or explosion may result
which can damage equipment and cause
severe bodily harm or even DEATH.
WARNING
Some maintenance operations require
a running engine.
ALWAYS make sure
the maintenance area is well ventilated.
Engine exhaust contains
poisonous
carbon monoxide gas that, when
inhaled, can cause
unconsciousness
and/or DEATH.
CAUTION
ALWAYS allow the engine to cool before
servicing.
NEVER attempt to service a
hot engine.
CAUTION
ALWAYS disconnect the spark plug wire and secure it
away from the engine before performing maintenance
or adjustments.
Figure 50. Air Cleaner Maintenance
1. Remove the air cleaner cover and foam filter element.
2. To remove dirt, tap the paper filter element several
times on a hard surface, or blow compressed air
[not exceeding 30 psi (207 kPa, 2.1 kgf/cm
2
)] through
the filter element from the inside out.
NEVER brush off
dirt. Brushing will force dirt into the fibers. Replace the
paper filter element if it is excessively dirty.
3. Clean the foam filter element in warm, soapy water or
a
nonflammable solvent. Rinse and dry the element
thoroughly. Dip the element in clean engine oil, then
completely wring all excess oil out of the element before
reinstalling it.
AIR CLEANER
COVER
PAPER FILTER
ELEMENT
BLOW COMPRESSED
AIR FROM THE
INSIDE OUT
FOAM FILTER
ELEMENT
GASKET
WING NUT
CAUTION
ALWAYS wear personal protective
equipment such as safety glasses, face
shields, dust masks, and/or respirators
when cleaning air filters with compressed air.
NOTICE
Operating the engine with loose or damaged air cleaner
components can allow unfiltered air into the engine,
causing premature wear and failure.