Guide Bar Maintenance; Chain Replacement - Craftsman 358.354870 Owner's Manual

5.) Sharpen
cutters.
a) Support flat side of file holder (with
3116" round file) on cutter top plate,
Figure 36
b) Hold the file holder levef with the
30 ° guide mark parallel to the
center Iine of the bar, Figure 37
c) File from inside toward outside of
cutter, straight across, in one direc-
tion only, Use 2 or 3 strokes per cut-
ting edge., Figure 38
6.) Correct Depth Gauges°
a) Place depth gauge tool over each
cutter depth gauger Figure 39
b) File level with the flat file if depth
gauge is higher than the depth
gauge tool
c) Maintain rounded front corner of
depth gauge with a flat file. Figure
40
NOTE: The very top of the depth
gauge should be fiat with the front
half rounded off with a flat file
b. CHAIN REPLACEMENT
1,,) Replace the chain when cutters or links
break.
2.) See your Sears Service Center to
replace and sharpen individual cutters
to match your chain°
3.) Always replace the worn sprocket
when installing a new chain to avoid
excessive wear to the chain.
ROUND
"-7 _'-'_x. FILE
SUPPORT V
FLAT SIDE I _ [:11]_ DEPTH
OF FILE HOLDER _ k__._GUAGE
oNTOP OF CUTTER
TEP PLATE
SIDE PLATE v
Figure 36
KEEP 30 ° MARK
PARALLEL
TO THE
CENTER OF
THE GUIDE
BAR
Figure 37
,ll
Figure 38
2. GUIDE BAR MAINTENANCE
e Conditions which can require guide bar
maintenance:
--saw cuts to one side
--saw has to be forced through a cut
--inadequate supply of oil to bar and
chain.
e Check the condition of the guide bar each
time the chain is sharpened. A worn guide
bar will damage the chain and make cub
ring more difficult
e Replace the guide bar when:
--the inside groove of the guide bar rails is
worn.
.--the guide bar is bent°
a Remove the guide bar to service
b, Clean oil holes at least once for each
five hours of operation,
c Remove sawdust from the guide bar
groove periodically with a putty knife or
a wire, Figure 41
d Remove burrs by filing the side edges
of the guide bar grooves square with a
flat file, Figure 42
e,, Restore sguare edges to an uneven rail
top by filing with a flat file, Figure 42
Figure 39
MAINTAIN ROUNDED CORNER
OF DEPTH GAUGE
Figure 40
REMOVESAWD'US, .......... J2
FROM GUIDE BAR GROOV_
V
CORRECT
GUIDE BAR
GROOVE
Figure 41
WORN GROOVES FILE EDGES
SQUARE
Figure 42
17