Bolens BL410 Operator's Manual page 12

MAINTENANCE & REPAIRINSTRUCTIONS
AIR FILTER MAINTENANCE
Removing the Air Filter/Muffler Cover
before you c ean or service t.
1. Place the choke control in the PARTIAL choke position (B).
NOTE: The choke control must be in the PARTIAL choke
position (B) (Fig. 13) to remove the air filter/
muffler cover.
2,
3.
Remove the four (4) screws securing the air filter/muffler
cover (Fig. 13). Use a flat blade or # T20 Torx bit
screwdriver.
Pull the cover from the engine. Do not force.
Screws i
Cleaning the Air Filter
Clean and re-oil the air filter every 1Ohours of operation. It is
an important item to maintain. Failure to maintain the air
filter will VOID the warranty.
1. Remove the air filter/muffler cover. Refer to the
Removing the Air filter/Muffler Cover section.
2. Remove the air filter from inside the air filter/muffler
cover (Fig. 14).
3. Wash the filter in detergent and water (Fig. 14). Rinse the
filter thoroughly. Squeeze out excess water. Allow it to
dry completely.
4. Apply enough SAE 30 oil to lightly coat the filter (Fig. 15).
5. Squeeze the filter to spread and remove extra oil (Fig. 15).
6. Replace the air filter inside the muffler cover (Fig. 14).
NOTE: Operating the unit without the air filter and cover
assembly will VOID the warranty.
Reinstalling the Air filterlMuffler Cover
1. Place the air filter/muffler cover over the back of the
carburetor and muffler.
NOTE: The choke control must be in the PARTIALchoke
position (B) (Fig. 13) to remove the air filter/
muffler cover.
Air Filter
i] ii II II II
/
Inside Muffler
Cover
2. Insertthe four (4) screws intothe holes in the air filter/
muffler cover (Fig. 13) and tighten. Usea flat blade or # T20
Torx bit screwdriver. Do not over tighten. Do not force.
SPARK ARRESTOR MAINTENANCE
1. Remove the air filter/muffler cover. Refer to Removing the
Air Filter/Muffler Cover.
2,
Locate the muffler front and the two (2) bolts securing it
to the engine (Fig. 16). Remove the two (2) bolts using a
flatblade screwdriver or 5/16-inch socket or nut driver.
Pull the muffler off of the engine.
3. Turn the muffler over to the back side and locate the
exhaust gasket. Remove the muffler gasket from the
muffler (Fig. 16).
NOTE: If the exhaust gasket is torn or damaged, replace it with
a new gasket before you reassemble the muffler.
4. Using a small flatblade screwdriver, carefully pry up the
spark arrestor from the recessed hole (Fig. 17). 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 can't be cleaned thoroughly (Fig. 17).
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.
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. 16).
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