Troy-Bilt TB75SS Operator's Manual page 12

Air Filter
Inside Muffler
Cover
Fig. 27
Fig. 29
6. Replace the air filter inside the air filter/muffler cover (Fig.
27).
NOTE: Operating the unit without the air filter and air
filter/muffler cover assembly will VOID the warranty.
Reinstalling the Air Filter/Muffler Cover
1. Place the air filter/muffler cover over the back of the
carburetor and muffler. Align the screw holes.
2. Insert the four (4) screws into the holes in the air
filter/muffler cover (Fig. 26) and tighten.
Do not over tighten.
12
MAINTENANCE AND REPAIR INSTRUCTIONS
Fig. 28
Fig. 30
SPARK ARRESTOR MAINTENANCE
1. Remove air filter/muffler cover. Refer to Removing the Air
Filter/Muffler Cover.
2. Locate the muffler, but do not remove it. Find the screw on
the bottom of the muffler (Fig. 31). Remove the screw using
either a torx #20 or flat blade screwdriver.
3. Carefully pry up the left side spark arrestor hood. Two tabs
act as hinges on the right side of the hood. Flip open the
spark arrestor hood like a door and then pull its tabs out of
the muffler slots.
4. Using a small flat blade screwdriver, carefully pry the spark
arrestor screen out from the inside of the spark arrestor
hood.
5. Clean the spark arrestor screen with a wire brush. Replace
it if it is damaged, or if you are unable to clean it
thoroughly.
6. Reinstall the spark arrestor screen snugly back into the
spark arrestor hood.
7. Reinstall the two hood tabs into the two muffler slots and
flip the spark arrestor hood closed.
8. Replace the screw you removed in Step 2 and tighten it
securely.
9. Reinstall the air filter/muffler cover.
WARNING:
If the exhaust deflector assembly is not
tightened securely, it could fall off causing damage to
the unit and possible serious personal injury.
Spark Arrestor
Hood
Screw
Spark Arrestor
Tabs
Engine
Slots
Screen
Muffler
Fig. 31