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WARNING: To prevent serious injury, never
perform maintenance or repairs with unit running.
I Always service and repair a cool unit. Disconnect the
1 I spark pug w re to ensure that the unt 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. Ifyou 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. Ifyou 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. 19).
L
Fig. 1g
3. Keep dirt, grass clippings and other debris out of the engine.
Clean the area around the dipstick before removing it.
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. 20). 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 21)
v
O-Ring __
\ MaxOilFi,Li,,J/ Hole \ ,
Fig. 20 -- Fig. 21
CHANGING THE OIL
[_l WARN'NG: Wear gloves to prevent injury whenjhandling 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. 22). 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)
of SAE 30 SF, SG, SH Fig, 22
oil.
NOTE: Use the bottle and spout saved from initial use to
measure the correct amount of oil. The top of the label
on the bottle measures approximately 3.04 ounces (90
ml) (Fig. 23). Check the level, See Checking the Oil
Level. If the level is low, add a small amount of oil and
recheck. Do not overfill (Fig. 23).
6. Replace the oil fill plug.
7. Reconnect the spark plug boot.
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