15.
MAINTENANCE
and
STORING
The following maintenance
jobs
apply when the engine
is
operated correctly under normal conditions. The
indicated maintenance intervals are by no means guarantees for maintenance free operations during these
intervals.
For
example, if the engine is operated in extremely dusty conditions, the air cleaner should be cleaned every
day instead of every
50
hours.
15-1
DAILY CHECKS
and
MAINTENANCE
Checks and maintenance
Reasons for requiring them
Remove dust
or
grass from whatever parts
or
replace.
Not only wasteful but also dangerous
Check external fuel leakage. If any, retighten
dust.
which accumulated or clogged.
The governor linkage is especially susceptible to
Check screw tightening.
If
any loose one is
found, re-tighten.
Loose screws and nuts will result in vibration
accidents.
Check oil level in crankcase and add up as
it
will fail.
necessary.
If the engine
is
operated without sufficient oil,
15-2
INITIAL
20
HOURS
CHECK
D
I
Checks and maintenance Reasons for requiring them
I
Change crankcase oil.
I
TO
remove run-in wear particles
I
15-3
EVERY
50
HOURS
(10
DAYS) CHECKS
and
MAINTENANCE
Checks and maintenance
Reasons for requiring them
Change crankcase oil.
Contaminated
oil
accelerates wear.
I
Clean air cleaner.
1
Clogged
air cleaner harms engine operation.
I
Check spark plug.
If
contaminated, wash
in
difficult.
gasoline
or
polish with emery
paper.
Output power
is
reduced and starting is made
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53
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