Troy-Bilt TB320BV - Manual (Page 16)

16
MAINTENANCE AND REPAIR INSTRUCTIONS
Fig. 20 Fig. 21
4. Apply enough clean SAE 30 oil to lightly coat the
filter (Fig. 20).
5. Squeeze the filter to spread and remove excess oil
(Fig. 21).
6. Replace the air filter inside the air filter/muffler cover
(Fig. 18).
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. 17) and tighten.
Do not over tighten.
SPARK ARRESTOR MAINTENANCE
1. Remove air filter/muffler cover. Refer to Removing
the Air Filter/Muffler Cover.
2. Locate muffler front and the two (2) bolts securing it to
the engine (Fig. 22). Remove the two (2) bolts using a
T-25 or T-27 Torx bit screwdriver or 5/16-inch socket
or nut driver. Pull muffler off of the engine.
3. Turn muffler over to the back side and locate the
exhaust gasket. Remove the muffler gasket from the
muffler (Fig. 22).
NOTE: If the exhaust gasket is torn or damaged, replace
it with a new gasket before reassembling muffler.
4. Using a small flatblade screwdriver, carefully pry up
the spark arrestor from the recessed hole (Fig. 23).
Remove the spark arrestor from the muffler.
5. Clean the spark arrestor with a wire brush. Replace it
if it is damaged or if it is impossible to clean
thoroughly (Fig. 23).
6. Reinstall the spark arrestor by pressing it into the
recessed hole on the muffler's back side. Make sure
it fits tightly against the muffler and is not raised up.
Fig. 23
Fig. 22
Muffler - Front Side Muffler - Back Side
Bolts Exhaust
Gasket
Spark
Arrestor
Muffler - Back Side
Spark
Arrestor
Flatblade
Screwdriver
Spark Arrestor
7. Place the exhaust gasket against muffler's back side.
Align the gasket bolt holes with the bolt holes in the
muffler. While holding exhaust gasket in place, insert
the bolts into the muffler's front side (Fig. 22).
8. Place the muffler (with the exhaust gasket in place
and bolts inserted), against the engine, aligning the
bolt holes. Tighten the bolts to secure the muffler to
the engine.
If using a torque wrench, torque to:
80-90 in.•lb. (9-10.2 N•m)
9. Reinstall the air filter/muffler cover.
If the muffler is not
tightened securely, it
could fall off causing damage to the unit and
possible serious personal injury.
WARNING: