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CUSTOMER RESPONSIBILITIES
Replace the guide bar when:
. the inside groove of the guide bar rails is worn.
• the guide bar is bent or cracked
- excess heating or burring of the rails is noted°
If replacement is necessary, use only the replacement
reduced kickback guide bar specified for your saw in the
repair parts list or as specified on the replacement bar and
chain decal located on the chain saw_
_-,,= File _==-_
Correct
Groove Worn Grooves File Edges
Square
_.,=_ Air Filter Cover
Retainer Screw
/_ Air Filter
I_ ,Screw
Air Filter
Cover
Figure 40
Figure 39
AFTER USE
CLEAN UNIT AND LABELS
= Clean the unit using a damp cloth with a mild detergent
after use.
° Wipe off the unit with a clean dry cloth..
EVERY 5 HOURS
CLEAN AIR FILTER (Fig. 40)
A dirty air' filter decreases the life and performanceof the
engine and increases fuel consumption and hamrful emis-
sions.
Always clean your air filter after 25 tanksof fuel or 5 hours
of operation, whichever is less. Clean more frequently in
dusty conditions.. A used air filter can never be completely
cleaned.. It is advisable to replace your' air filter with a new
one after every 50 hours of operation,or annually, which-
ever is tess,
• Loosen the air filter cover retainer screw.
. Remove air filter cover,.
• Loosen the air' fiiter screw and the two air fitter retainers.
° Remove the air filter
• Use a stiff nylon bristle brush to clean the air filter in hot
soapy water_ Rinse with clean cool water, and air dry
completely prior to reinstalling.
• Reinstall air filter and tighten air filter screw and air filter
retainers°
o Reinstall air' filter' cover and tighten air filter cover retain-
er screw..(15-20 in-lb).
EVERY 25 HOURS
INSPECT MUFFLER AND SPARK ARRESTOR
SCREEN (IF INSTALLED) (Fig. 41)
As the unit is used, carbon deposits build up on the muffler
and spark arrestor screen (if installed), and must be
removed to avoid creating a fire hazard or affecting engine
performance.
Required cleaning is every 25 hours of operation or' annu-
ally, whichever is less,
Replace thespark arrestor screen ifbreaks occur°
CLEANING THE SPARK ARRESTOR SCREEN
- Loosen and remove the 2 mufflercovet screws=
, Remove the muffler cover (cover snaps into muffler
body),
° Remove muffler diffuser and spark arrestor screen
assembly. Notice the orientation of these parts for
reassembiy,
° Clean the spark arrestor screen with a wire brush or
replace if breaks are found inthe screen..
-Repiace any broken or cracked parts..
° Reinstall diffuser and spark arrestor screen assembly
with round holes facing up and towardsmuffler cover.
Reinstall muffler cover and 2 screws (7_8ft4bs)_
Muffler
Cover Muffler Muffler Diffuser/
Screws Cover Spark Arrestor
\ Screen
Figure 41
- 22 -
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