Homelite UT10947E - Manual (Page 32)

Page 32
MAINTENANCE
WARNING
Muffler surfaces are very hot during and after operation
of the chain saw; keep all body parts away from the
muffler. Serious burns may occur if contact is made
with the muffler.
INSPECTING THE SPARK ARRESTOR
See Figure 76.
The muffler is equipped with a spark arrestor screen which
can become dirty through normal use of the chain saw. The
spark arrestor should be inspected weekly.
1. Allow the muffler to cool.
2. Apply a drop of oil to the threads on the exposed end
of the muffler mounting bolts before removing nuts.
3. Remove the nuts holding the muffler in place.
4. Remove the muffler. The spark arrestor can be seen
through the opening in the reverse side of the muffler.
5. If the spark arrestor is clean, reinstall the muffler. If it is
dirty, cracked, or otherwise deteriorated, replace the
muffler as described in the following section.
MUFFLER
Fig. 76
NUTS
MUFFLER
MOUNTING
BOLTS
GASKET
REVERSE SIDE
OF MUFFLER
SPARK
ARRESTOR
SCREEN
REPLACING THE MUFFLER
See Figure 76.
Replace the muffler after 50 hours of use, as well as any
time the spark arrestor becomes dirty, cracked, or oth-
erwise deteriorated. Call 1-800-CHAINSAW (1-800-242-
4672) for a replacement muffler kit.
1. Allow the muffler to cool.
2. Apply a drop of oil to the threads on the exposed end
of the muffler mounting bolts before removing nuts.
3. Remove the nuts holding the muffler in place.
4. Remove old muffler and gasket and discard.
5. Install new gasket and muffler
6. Install nuts and tighten to secure.
CHAIN BRAKE
See Figures 77 and 78.
n
Remove the clutch cover and clean the chain brake
components. Check wear on the brake band and re-
place if worn or deformed. The band thickness should
not be less than 0.024 in. (.60mm), or worn halfway
through.
n Always keep the chain brake mechanism clean and
lightly lubricate the linkage.
n Always test the chain brake performance after servicing
or cleaning. Refer to “Operation - Operating Chain
Brake” earlier in this manual for additional information.
n Check and, if damaged, replace the chain catcher.
BRAKE BAND
CLEAN THE CHAIN BRAKE
LUBRICATE THE CHAIN
BRAKE LINKAGE
Fig. 77
CHAIN CATCHER
Fig. 78