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Warning, Maintenance and repair instructions – Yard-Man YMGBV3100 User Manual

Page 17

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17

Fig. 26

Fig. 27

4. Apply enough clean SAE 30 oil to lightly coat the

filter (Fig. 26).

5. Squeeze the filter to spread and remove excess oil

(Fig. 27).

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

(Fig. 24).

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. 20) and tighten.
Do not over tighten.

SPARK ARRESTOR MAINTENANCE

NOTE: The exhaust can only flow in one direction: AWAY

from the engine. Pay close attention when
disassembling the muffler so you can put it back
together correctly. Failure to do so will damage
the unit and may cause serious personal injury.

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 two

(2) screws on the bottom of the muffler (Fig. 28).
These two screws hold the Spark Arrestor Hood
Assembly and the spark arrestor screen to the
bottom of the muffler. Remove the two (2) screws
using either a torx #20 or flat blade screwdriver.

3. Using a small flat blade screwdriver, carefully pry up

the spark arrestor screen from the recessed hole,
taking care to notice that the “raised” part of the
spark arrestor screen is inside the recessed hole.
Remove the spark arrestor screen from the muffler.

Fig. 28

4. Clean the spark arrestor screen with a wire brush.

Replace it if it is damaged, or if you are unable to
clean it thoroughly.

5. Reinstall the spark arrestor screen by putting the

“raised” portion of the screen inside the recessed
hole of the muffler. Make sure that the spark arrestor
screen fits flat against the muffler.

6. Place the spark arrestor plate on top of the spark

arrestor with the “raised” side up and the opening
facing towards the engine (Fig. 28).

7. Place the spark arrestor hood on top of the spark

arrestor plate with the “raised” side up and the
opening facing AWAY from the engine (Fig. 28). Verify
that the exhaust will be directed AWAY from the
engine.

8. Replace the two screws you removed in Step 2 and

tighten them securely.

9. Reinstall the air filter/muffler cover.

MAINTENANCE AND REPAIR INSTRUCTIONS

If the spark arrestor
hood assembly is not

tightened securely, it could fall off causing
damage to the unit and possible serious
personal injury.

WARNING:

Spark Arrestor

Screen

Spark Arrestor

Plate

Spark Arrestor

Hood

Screws

Muffler

Recessed Hole

Engine

Spark Arrestor Hood

Assembly Includes:

Spark Arrestor Plate

Spark Arrestor Hood

and Screws

Opening