2. GUIDE BAR
MAINTENANCE
. 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.
. Check the condition of the guide bar
each time the chain is sharpened. A worn
guidebarwilldamagethechainandmakecut-
tingmoredifficult.
. Replace the guide bar when:
– theinsidegrooveofguidebarrailsisworn.
– the guide bar is bent or cracked,
I Side Plate TOPplate
Figure 30
Figure 31
Figure 32
●
Use only the replacement Reduced-
Kickback Guide Bar specified for your
saw in the “Specification” section.
a.
b.
c.
d.
e.
Remove the guide bar to service.
Cleanthe oil holes at least once after every
five hours of operation.
Remove sawdustfrom the guide bar groove
periodically with a putty knife or a wire.
Figure 34.
Removeburrs by filing the sideedgesofthe
guide bar grooves square with a flat file.
Figure 35.
Restore square edgesto an uneven rail top
be filing with a flat file. Figure 35.
Right Way
Wrong Way
Figure 33
Figure 34
PI
Correct
Guide Bar
Worn Grooves File Edges
Groove
Squm-e
Figure 35
B. SPARK ARRESTOR
Carbon deposits build up on the spark ar-
restor asthesawisusedandmustberemovedto
avoidcreatinga fire hazardor causingengine
damage,
Replace the spark arrestor if breaks occur.
Keep the spark arrestor clean at all times.
Clean: - -as reauired.
1.
2.
3.
4.
5.
6.
––at lea~t once for each 25–30
hours of operation.
Itemsrequired:wirebrush,3/8” wrench
Disconnectthesparkplugwire.
Removethebarclamp.
Removethemufflercover.Figure36.
Removethescreenfromthebaffle.
Cleanthescreenwithawirebrushorreplaceif
breaksarefound.
Reassembleparts.
.~~
sp~kihr(k)rscreen
Figure 36
-17 –
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