Ryobi 310BVr - Manual (Page 17)

MAINTENANCE AND REPAIR INSTRUCTIONS
SPARK ARRESTOR MAINTENANCE
Removing the Muffler
A
WARNING: Make sure the muffler is cool
before removing it from the housing to
prevent serious personal injury.
1 Remove the 10 screws holding the unit housing
together with a T20 Torx or flat blade screwdriver
(Fig. 31).
2. Locate the two (2) muffier mounting bolts that are
holding the heat shield and muffler to the engine.
Remove the two (2) bolts using a flat blade
screwdriver or 5/16-inch socket or nut driver (Fig. 32).
NOTE: Do not remove the heat shield/muffler screw to
separate the top heat shield from the muffler.
The spark arrestor will be accessible without
removing the screw.
3. Locate the four (4) screws holding the top heat shield
to the bottom heat shield (two on each side). Remove
the four (4) screws using a T20 Torx or flat blade
screwdriver (Fig. 32).
4. Remove the top heat shield with the muffler attached
from the engine as one piece.
Removing the Spark Arrestor
5. Turn the heat shield/muffler unit over. Look inside the
heat shield and locate the exhaust gasket on the
muffler. Remove the exhaust gasket from the muffler
to locate the spark arrestor (Fig. 33).
NOTE: If exhaust gasket is torn or damaged, replace
with a new gasket before reassembling.
Fig. 33
6. Using a small flat blade screwdriver, carefully pry up
the spark arrestor from the recessed hole in the
muffler. Remove spark arrestor from muffler (Fig 34).
7. Clean the spark arrestor with a wire brush. Replace if
damaged or unable to clean thoroughly (Fig. 34).
Spark
Arrestor
Spark
Arrestor
Muffler
Fig. 32
Small Flat Blade Screwdriver
Fig. 34-----------------------------------------------
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