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2. GUIDEBAR MAINTENANCE
• Conditionswhich 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 o! the guide bar each
time the chain is sharpened.
A worn guide
bar will damage
the chain and make cut-
ting more difficult.
• Replace the guide bar when."
--the inside groove of the guide bar rails is
WORN.
-- the guide bar is bent or cracked.
•
Use only the Reduced-Kickback Guide Bar
specified foryour sawin "Specifications"
lot
replacemenL
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 36.
d.
Remove burrs by filing the side edges of
the guide bar grooves squarewith a flat file.
Figure 37.
e.
Restore square edges to an uneven rail
top by filing with a fiat file. Figure 37.
CUTTERS
"SAMELENGTH
REMOVE DAMAGE
SIDE PLATE
TOP PLATE
Figure32
Figure33
/
DEPTH GAUGE TOOL
_,
GAUGE
Figure 34
, ,
,
',,H ,;,;,;, ...........
,
,
,,,,,,,,,,,,,,,,, , ,,,,,,
HOOK
TOO MUCH
SQUARED
•
o.co..E.
RIGHT WAY
WRONG WAY
[
Figure 35
REMOVE SAWDUST "'
_L
FROM GU,DE BAR GROOVtE_s_F
V
.............
;
=
IIIIIIII
Figure36
GROOVES
FILE EDGES_'_
GROOVE
SQUARE
Figure37
B. SPARK ARRESTOR
.e
Carbon deposits build up on the spark ar-
restor, as the sawisused and must beremoved to
_avoidcreatinga firehazard or causing engine dam-
age.
e, Rep_.ace the sp_,rkat_,.,_-tm-, if breaks OCt-tiT.
• Keep the spark arrestor clean at all times.
Clean:
--as required
--at least onceforeach 25-30 hours of operation
Items required: wire brush, 3/8 '_wrench
RgUre 38
1.Disconnect thesperk plug wire.
2. Remove the Muffler Cover.Figure38.
3. Remove the screen from the baffle.
4.Cleanthe screen with a wire brush or replace if
5. breaks are found.
6. Reassemble parts.
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