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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 engine
oil level.
X X
Change the engine oil
(models with oil filter).
X
1
X
Change the engine oil
(models without oil filter).
X
1
X
Clean the air filter. X
3
Clean the air screen. X
3
Do an inspection of the
muffler and the spark ar-
rester.
X
Replace the oil filter (if it
is equipped).
X
1
X
Clean the engine cooling
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 muffler.
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 conditions.
1
Do more frequently if you operate with a heavy load, in high ambient temperatures, or in dirty conditions.
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 conditions.
3
Do more frequently if you operate with in dirty conditions.
3
Do more frequently if you operate with in dirty conditions.
1720 - 004 - 22.09.2023 19
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