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Craftsman 25cc - Propane Curved Shaft Trimmer Powered by Lehr Operation Manual page 13

Propane powered line trimmer
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MAINTENANCE
CHANGING THE OIL
For a new engine, change the oil after the rst 10 hours
of operation. Change the oil while the engine is still
warm but not hot. The oil will ow freely and carry away
more impurities.
1. Unplug spark plug boot to prevent accidental starting.
2. Remove the oil ll plug/dipstick.
3. Pour the oil out of the oil ll hole and into a container
by tipping the unit to its side (Fig. 19). Allow ample
time for complete drainage.
Fig. 19
NOTE: Wear gloves to prevent injury when handling the
unit.
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. Re ll the crankcase with 1.7 uid oz. (50 mL) of SAE
10W-30 SF, SG, or SH oil.
NOTE:
The bottle measure approximately 1.7 fluid oz/50 ml.
Check the level with the dipstick. If the level is low,
add a small amount of oil and recheck.
Do not over fill (Fig. 17).
6. Replace the oil ll plug/dipstick.
7. Reconnect the spark plug boot.
4-Cycle Motor Oil
Fig. 20
CLEANING THE AIR FILTER
Clean and re-oil the air lter every 10 hours of operation.
It is an important item to maintain. Failure to maintain
your air lter properly can result in poor performance or
can cause permanent damage to your engine.
1. Remove phillips head screw in air lter cover. Then
pull the air lter cover out and upwards (Fig. 21) .
2. Remove the air lter (Fig. 21).
Air Filter
Air Filter
Cover
Screw
Air Filter
Base Plate
Fig. 21
3. Wash the lter in detergent and water. Rinse the lter
thoroughly and allow it to dry.
4. Apply enough clean SAE 10W-30 motor oil to lightly
coat the lter.
5. Squeeze the lter and remove excess oil.
6. Replace the lter.
NOTE: If the unit is operated without the air lter, you
will VOID the warranty.
7. Reinstall the air lter cover. Position the hooks on the
top of the air lter base plate into the slots at the top
of the lter cover.
8. Swing the cover until the air lter cover snaps into
place and replace the screw.
WARNING:
TO AVOID SERIOUS PERSONAL INJURY,
BE SURE TO TURN THE UNIT OFF
BEFORE SERVICING IT.
LEHR
|
ALL RIGHTS RESERVED 2008-2009
13

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