34
English
GB
F D E I P NL S DK N FIN GR HU CZ RU RO PL SLO HR TR EST LT LV SK BG
MAINTENANCE
CLEANING THE ENGINE (Fig. 66-67)
Clean the cylinder fi ns (B) and fl ywheel fi ns (A) with
compressed air or a brush periodically. Dangerous
overheating of the engine may occur due to impurities on
the cylinder.
WARNING
Never run the saw without all the parts, including
the drivecase cover and starter housing, securely in
place.
Because parts can fracture and pose a danger of
thrown objects, leave repairs of the fl ywheel and
clutch to factory trained authorized service center
personnel.
NOTE: If you notice a power loss with the gas-powered
tool, the exhaust port and muffl er may be blocked with
carbon deposits. These deposits may need to be removed
to restore performance.
CHECKING THE FUEL FILTER (Fig. 68)
Check the fuel filter (B) periodically. Replace it if
contaminated or damaged.
REPLACING THE SPARK PLUG (Fig. 69)
This engine uses a Champion RZ7C or NGK CMR7H
spark plug with 0,64 mm electrode gap. Use an exact
replacement and replace every 50 hours or more frequently,
if necessary.
■ Loosen the spark plug by turning it counterclockwise
with a wrench (A).
■ Remove the spark plug.
■ Hand thread the new spark plug, turning it clockwise.
Tighten securely with wrench (B).
NOTE: Be careful not to cross-thread the spark plug.
Cross-threading will seriously damage the cylinder.
INSPECTING/CLEANING THE SPARK ARRESTOR
SCREEN AND MUFFLER EXHAUST PORT (Fig. 70)
The muffl er is equipped with a spark arrestor screen. A faulty
spark arrestor screen can create a fi re hazard. Through
normal use the screen can become dirty and should be
inspected weekly and cleaned as required. Always keep the
muffl er and spark arrestor on the saw in good condition.
WARNING
Muffler surfaces are very hot during and after
operation of the chain saw. To avoid serious personal
injury, keep all body parts away from the muffl er.
■ Allow the muffl er to cool.
■ Remove torx screw (E) and 8 mm. nuts (D) holding the
muffl er cover in place; remove muffl er cover (C) and
spark screen (A).
■ If dirty, clean the spark arrestor screen with a small wire
brush. Replace the screen if it is cracked or otherwise
deteriorated.
■ Remove the muffl er (B).
■ Insert a fl at blade screwdriver into the muffl er exhaust
vent to remove any carbon deposits.
■ Wipe away any carbon buildup on the muffl er exhaust
vent and the cylinder exhaust port at the same time.
■ Reinstall muffl er, spark screen, and muffl er cover.
■ Reinstall torx screw and nuts to secure.
INSPECTING AND CLEANING CHAIN BRAKE (Fig.
71-72)
■ Remove the clutch cover and clean the chain brake
components (A). Check wear on the brake band (C) and
replace if worn or deformed. The band thickness should
not be less than 0.6 mm, or worn halfway through.
■ Always keep the chain brake mechanism clean and
lightly lubricate the linkage (B).
■ Always test the chain brake performance after servicing
or cleaning. Refer to Operating Chain Brake for
additional information.
■ Check the chain catcher (D) and replace if damaged.
WARNING
Even with daily cleaning of the mechanism, the
dependability of a chain brake to perform under fi eld
conditions cannot be certifi ed. use proper cutting
techniques.
STORING THE CHAIN SAW (1 MONTH OR LONGER)
■ Drain all fuel from tank into a container approved for
gasoline.
■ Run the engine until it stops. This will remove all fuel-oil
mix that could become stale and leave varnish and gum
in the fuel system.
■ Squeeze primer bulb several times to purge fuel from
carburetor.
960086014-01.indd Sec1:34960086014-01.indd Sec1:34 1/12/2004 5:02:25 PM1/12/2004 5:02:25 PM
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