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Engine Maintenance
6
8
WARNING!
Shut off the engine before performing any
maintenance. To prevent accidental start-up,
disconnect the spark plug boot.
Periodic inspection and adjustment of the
engine is essential if high level performance
is to be maintained. Regular maintenance will
also ensure a long service life. The required
service intervals and the kind of maintenance
to be performed are described in the table
below. Follow the hourly or calendar intervals,
whichever occur first. More frequent service is
required when operating in adverse conditions.
Maintenance Schedule
After First
5 Hours
Each use
or Every
5-10 Hrs.
Every
Season or
25 Hours
Every
season or
50 Hours
Every
season or
100 Hours
Service
Dates
Check Engine Oil Level
P
Change Engine Oil ††
P P
Change Engine Oil FIlter ††
P
Check Air Cleaner
P
Service Air Cleaner †
P
Check Spark Plug
P
Replace Spark Plug
P
Clean Cooling Fins
P
Replace Fuel Filter
P
Clean Finger Guard and around Muffler
P
† Service more frequently when used in dusty areas.
†† Every season or 25 hours if operating under heavy load or high ambient temperature.
WARNING!
If the engine has been running, the muffler will be
very hot. Be careful not to touch the muffler.
Oil Service
• Check oil level regularly.
• Be sure correct oil level is maintained.
Check every five to ten hours before
starting engine. See oil checking
procedure in the Set-Up section.
NOTE: Select engines are equipped with a
drain plug instead of the drain valve. For these
engines see the equipment manual for oil
change procedures.
Oil Drain
IMPORTANT: Be sure to check engine on a level
surface with the engine stopped. Drain the oil
while the engine is still warm to assure rapid
and complete draining.
1. Locate the oil drain valve (a) and place a
suitable container below the plug.
2. Remove the drain cap (b).
NOTE: If necessary, push the oil drain hose (if
provided) onto the oil drain valve. Route the
opposite end of the hose into an appropriate
oil collection container with at least a 2.5 quart
capacity, to collect the used oil.
3. Turn the drain plug valve 1/4 turn
counterclockwise while gently pulling
the valve away from the engine to open
the oil drain valve.
4. Allow oil to drain into a suitable
container.
5. Reverse STEPS 4-3 to close the oil drain
valve and reinstall the drain cap.
IMPORTANT: Used motor oil may cause skin
cancer if repeatedly left in contact with the skin
for prolonged periods. Although this is unlikely
unless you handle used oil on a daily basis, it is
still advisable to thoroughly wash your hands
with soap and water as soon as possible after
handling used oil.
NOTE: Please dispose of used motor oil
in a manner that is compatible with the
environment. Check with your local municipality
for proper disposal procedure. Do not throw it
in the trash or pour it on the ground.
(a)
(a)
(b)
(a)
1
2
3
Figure 6-1
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