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5.)Correct Depth Gauges
a.)
b.)
c,)
2. GUIDE BAR MAINTENANCE
Place depth gauge tool over each cutter • Conditions Which can require guide bar
depthgauge, Figure31. maintenance:
File level with the flat file if depth gauge is
higher than the depth gauge toot.
Maintain rounded front corner of depth
gauge with a flat file. Figure 31 &32.
NOTE: The very top of the depth gauge
should be fiat with the front half rounded
off with a flat file.
m saw cuts to one side
-- saw has to be forced through a cut
-- inadequate supply of oil to bar and chain,
• Check the condition ofthe guide bar each time
the chain is sharpened. A worn guide bar will
damage the chainand make cuttingmore difficult.
_WARNING
Depth gauge tool is required to insure proper depth
gauge. Filing the depth gauge too deep will increase
the chance of kickback which can result in serious
injury.
b. CHAIN REPLACEMENT
1.) Use onlythe Low-KickChain specified for
• Replace the guide bar when:
-- the inside groove of the guide bar roils is
worn.
-- the guide bar is bent or cracked.
• Use only the Reduced-Kickback Guide Bar
specified for your saw in "Specifications," for
replacement.
your saw in "Specifications" for replace-
ment chain.
2.) Replace the chain when cutters or links
break,
3.) See a qualified service dealer to replace
and sharpen individual cutters for match-
ing your chain.
4) Always have a worn sprocket replaced by
a qualified service dealer when installing
a new chain to avoid excessive wear tothe
chain,
REMOVE SAWDUST
a. Remove the guide bar to service.
b. Clean oil holes at least once for each five
hours of operation, Figure 33.
c. Remove sawdust from the guide_bar
groove periodically with a putty knife or
a wire. Figure 33.
d. Remove burrs by filing the side edges
of the guide bar grooves square with a
flat file. Figure 34.
e.. Restore square edges to an uneven rail
top by filing with a flat file, Figure 34,
FROM GUIDE BAR GROOVE
HOLES
Figurs 33
CORRECT
GUIDEBAR
GROOVE
WORN GROOVES FILE EDGES
SQUARE
B, SPARK ARRESTOR AND SPARK PLUG
1. SPARK ARRESTOR
• Carbon deposits build up on the spark ar-
restor, asthe saw isused and must be removed to
avoid creating a fire hazard or causing engine dam-
age.
• Replace the spark arrestor ifbreaks occur.
• Keep the spark arrestor clean at all times.Clean.
-- as required
--at least once for each 25-30 hours of
Figure 34
HEAT SHIELD DIFFUSER
SPARK ARRESTOR! SCREEN
Figure 35
2. SPARK PLUG
• Replace the spark plug when necessary:
operation
Items required:
-- wirebrush,
-- 3/8" wrench
a. Disconnectthespark plugwire,
b. Remove the heatshield, Figure35,
c. Removethe screen from the diffuser.
d. Clean the screen with a wire brush or replace if
breaks are found.
e. Reassemble parts.
• Ifyou perform this maintenance yourself,note
the "Caution" below.
ICAUTION:IDo not mix chrome-colored fan
housing screws with the black-colored cylinder
shroud screws. Other than color,these screwsare
similar in appearance; but if interchanged, they
can strip out and/or cause permanent engine
damage.
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