Replace Spark Plug; Replace Fuel Filter; Chain Sharpening - Craftsman 358.350990 Operator's Manual

REPLACE SPARK PLUG
The spark plug should be replaced
each year to ensure the engine starts
easier and runs better. Ignition timing
is fixed and nonadjustable.
1. Loosen 3 screws on cylinder cover.
2. Remove the cylinder cover.
3. Pull off the spark plug boot.
4. Remove spark plug from cylinder
and discard.
5. Replace with Champion RCJ-7Y
spark plug and tighten securely
with
a 3/4
inch (19 mm) socket
wrench. Spark plug gap should be
0.025 inch (0,6 mm).
6. Reinstall the spark plug boot.
7. Reinstall the cylinder cover and 3
screws. Tighten securely.
REPLACE FUEL FILTER
To replace fuel filter, drain your unit by
running it dry of fuel. Remove fuel cap
and its connected retainer from tank.
Pull filter from tank and remove from
line. Replace and reassemble.
,_WARNING: Disconnect the
spark plug before performing mainte-
nance, service, or adjustments except
for carburetor adjustments.
CHAIN SHARPENING
,_WARNING: Improper chain
sharpening techniques and/or depth
gauge maintenance will increase the
chance of kickback which can result in
serious injury.
WAR NI N G: Wear protective
gloves when handling chain. The chain
is sharp and can cut you even when it is
not moving.
Conditions which indicate the need for
chain sharpening:
• Reduction in size of wood chips. The
size of the wood chip will decrease
as the chain gets duller until it be-
comes more like a powder than a
chip. Note that dead or rotted wood
will not produce a good chip.
• Saw cuts to one side or at an angle.
• Saw has to be forced through the cut.
Tools required:
• 5/32 inch (4 mm) diameter round file
and file holder
• Flat file
• Depth gauge tool
TO SHARPEN CHAIN:
1. Move ON/STOP switch to the STOP
position.
2. Check chain for proper tension.
Adjust chain tension if necessary.
See CHAIN TENSION section.
3. Sharpen cutters.
• To sharpen the cutters, position
the file holder level (90 ° ) so that
it rests on the top edges of the
cutter and depth gauge.
NOTE: The chain has both left
and right hand cutters.
File Holder
Cutter
Depth Gauge
• Align the 30 ° file holder marks
parallel with the bar and to the
center of the chain.
'k_ Cutter
30 _/_' Cutter
File Holder Line
Sharpen cutters on one side of
the chain first. File from the inside
of each cutter to the outside.
Then, turn the chain saw around
and repeat the process for the
other side of the chain.
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