Yard-man YM300 User Manual download pdf (Page 14)

Air Filter

Inside Muffler

Cover

Muffler - Front Side

Muffler - Back Side

Bolts

Exhaust

Gasket

Spark

Arrestor

Muffler - Back Side

Spark

Arrestor

Flat blade

Screwdriver

Spark Arrestor

6. Replace the air filter inside the air filter/muffler cover.

See Figure 22.

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.

NOTE: The choke lever must be in the PARTIAL choke

position (B)) to install the air filter/muffler cover.

See Figure 21.

2. Insert the four (4) screws into the holes in the air

filter/muffler cover and tighten. See Figure 21.

Do not over tighten.

Spark Arrestor Maintenance

1. Remove air filter/muffler cover. See Removing the Air

Filter/Muffler Cover.

2. Locate muffler front and the two (2) bolts securing it

to the engine. See Figure 26. Remove the two (2)

bolts using a flatblade 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. See Figure 26.

NOTE: If the exhaust gasket is torn or damaged, replace

it with a new gasket before reassembling muffler.

Using a small flatblade screwdriver, carefully pry up the

spark arrestor from the recessed hole. See Figure 27.

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. See Figure 27.

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. See Figure 26.

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).

WARNING: If the muffler is not tightened

securely, it could fall off causing damage to

the unit and possible serious personal injury.

9. Reinstall the air filter/muffler cover.

SECTION 7: MAINTENANCE AND REPAIR INSTRUCTIONS

Figure 27

Figure 26

Figure 25

Figure 24

Figure 23Figure 22

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Yard-man YM300 User Manual Page 14

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