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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
I
Checks and maintenance Reasons
for
requiring them
Remove dust from whatever parts which
or
replace.
Not only wasteful but also dangerous Check external fuel leakage.
If
any, retighten
dust.
accumulated dust.
The governor linkage is especially susceptible to
Check screw tightening.
If
any
loose
one
is
it will fail.
necessary.
If the engine
is
operated without sufficient oil,
Check oil level in crankcase and add up as
accidents.
found, re-tighten.
Loose screws and nuts will result in vibration
15-2
EVERY
20
HOURS
CHECKS
and MAINTENANCE
~~~ ~ ~ ~~ ~~
__
Checks and maintenance Reasons
for
requiring them
Change crankcase
oii.
To
remove run-in wear particles
15-3
EVERY
50
HOURS
(IO
DAYS) CHECKS and MAINTENANCE
I
Checks and maintenance Reasons for requiring them
Change crankcase oil.
Output power
is
reduced and starting is made Check spark plug.
If
contaminated,
wash
in
Clogged air cleaner harms engine operation.
Clean air cleaner.
Contaminated
oil
accelerates
wear.
gasoline or polish with emery paper.
difficult.
-
____
15-4
EVERY
100
-
200
HOURS
(MONTHLY) CHECKS and MAINTENANCE
Checks and maintenance
I
Reasons for requiring them
Clean fuel filter and fuel tank.
1
The engine will be out
of
order.
Clean contact breaker points.
The engine output drops.
-
49
-