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WARNING: Toprevent serious injury, never
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perform maintenance or repairs with unit running.
Always service and repair a cool unit. Disconnect the
spark pug w re to ensure that the un t cannot start.
MAINTENANCE
SCHEDULE
Perform these required maintenance procedures at the
frequency stated in the table. These procedures should also
be a part of any seasonal tune-up.
NOTE:
Some maintenance procedures may require special
tools or skills. If you are unsure about these
procedures take your unit to a Sears or other qualified
service dealer.
NOTE:
Maintenance,
replacement,
or repair of the emission
control devices and system may be performed
by a
Sears or other qualified service dealer.
In order to assure peak performance
of your engine, inspection
of the engine exhaust port may be necessary after 50 hours of
operation.
If you notice lost RPM, poor performance or general
lack of acceleration, this service may be required. If you feel
your engine is in need of this inspection,
refer service to a
Sears or other qualified service dealer for repair. DO NOT
attempt to perform this process yourself as engine damage
may result from contaminants
involved in the cleaning process
for the port.
FREQUENCY
MAINTENANCE
REQUIRED
SEE
Before starting engine
Fill fuel tank with fresh fuel
p. 6
Check oil
p. 10
Every 10 hours
Clean and re-oil air filter
p. 11
1st change at 10 hours
Change oil
p. 10
2nd change at 25 hours
Change oil
p. 10
Every 25 hours after
Clean spark arrestor
p. 13
10 hours on new engine
Check rocker arm to valve clearance and adjust
p. 12
Every 25 hours
Check rocker arm to valve clearance and adjust
p. 12
Every 25 hours
Check spark plug condition and gap
p. 13
CHECKING THE OIL LEVEL
The importance of checking and maintaining the proper oil level
in the crankcase cannot be overemphasized.
Check oil before
each use:
1.
Stop the engine and allow oil to drain into the crankcase.
2.
Place the engine on an elevated, level surface with the
cutting head shield hanging off the surface to get a proper
oil level reading (Fig. 18).
3.
Keep dirt, grass clippings and other debris out of the engine.
Clean the area around the dipstick before removing it.
f
Fig. 18
4.
Remove the oil fill plug.
5.
Look into the oil fill hole, use a flashlight if needed. The oil
should be just touching the inner most thread (Fig. 19).
6.
If the oil level is not touching the inner most thread on the
oil fill hole, add a small amount of oil to the oil fill hole and
recheck (Fig. 19). Repeat this procedure until the oil level
reaches the inner most thread on the oil fill hole.
NOTE:
Do not overfill the unit.
NOTE: Make sure the O-ring is in place on the oil fill plug when
checking and changing the oil (Fig. 20).
\v
v/
Oil Fill Plug
f ('_o_
.axO.F.i.no
O.F...o.o
Fig. 19
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Fig.20
CHANGING
THE OIL
WARNING:
Wear gloves to prevent injury when
handling unit.
For a new engine, change the oil after the first 10
hours of operation. Change the oil while the engine is still
warm. The oil will flow freely and carry away more impurities.
1.
Unplug spark plug boot to prevent accidental starting.
2.
Remove the oil fill plug.
3.
Pour the oil out of the oil fill hole and into a container by
tipping the unit to a
vertical position (Fig. 21).
Allow ample time for
complete drainage.
4.
Wipe up any oil residue
on the unit and clean up
any oil that may have
spilled. Dispose of the
oil according to Federal,
State and local
regulations.
5.
Refill the crankcase with
3.04 fluid ounce (90 ml)
or 3/8 cup of SAE 30
SF, SG, SH oil.
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Fig. 21
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