Maintenance schedule Before
each
use
At inter-
vals of 8
hours
At inter-
vals of
25
hours
At inter-
vals of
50
hours
At inter-
vals of
100
hours
Each
season
Before
storage
Engine Do a check of the en-
gine oil level.
X X
Change the engine oil
(models with oil filter).
X
1
X
Change the engine oil
(models without oil fil-
ter).
X
1
X
Clean the air filter. X
3
Clean the air screen. X
3
Do an inspection of the
muffler and the spark
arrester.
X
Replace the oil filter (if it
is equipped).
X
1
X
Clean the engine cool-
ing fins.
X
3
Replace the spark plug. X X
Replace the paper car-
tridge of the air filter.
X
3
Replace the fuel filter X
Do a check of the muf-
fler. Refer to
To do a
check of the muffler on
page 8
.
X
Lubrication schedule
CAUTION: Do not lubricate the
pivot points that have special nylon
bearings. Tacky lubricants can attach
dirt. The dirt decreases the life of the
special nylon bearings. If it is necessary
to lubricate the nylon bearings, use only
a small quantity of dry type lubricant.
1
Do more frequently if you operate with a heavy load, in high ambient temperatures, or in dirty condi-
tions.
1
Do more frequently if you operate with a heavy load, in high ambient temperatures, or in dirty condi-
tions.
3
Do more frequently if you operate with in dirty conditions.
3
Do more frequently if you operate with in dirty conditions.
1
Do more frequently if you operate with a heavy load, in high ambient temperatures, or in dirty condi-
tions.
3
Do more frequently if you operate with in dirty conditions.
3
Do more frequently if you operate with in dirty conditions.
2009 - 003 - 10.04.2023 23
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