Yard Machines 3100M - Manual (Page 11)

11
AIR FILTER MAINTENANCE
Removing the Air Filter/Muffler Cover
1. Place the blue choke lever in Position 2.
NOTE: The blue choke lever must be in Position 2 to remove
the air filter/ muffler cover.
2. Remove the four (4) screws securing the air filter/muffler
cover (Fig. 21). Use a T-20 Torx bit screwdriver.
3. Pull the cover from the engine. Do not force.
Cleaning the Air Filter
Clean and re-oil the air filter every 10 hours of operation. It is an
important item to maintain. Failure to maintain your air filter
properly can result in poor performance or can cause
permanent damage to your engine.
1.
Remove air filter/muffler cover. Refer to Removing the Air
Filter/Muffler Cover.
2. Turn cover over and look inside to locate the air filter.
Remove the air filter from inside the air filter/muffler cover
(Fig. 22).
3. Wash the filter in detergent and water (Fig. 23). Rinse the
filter thoroughly. Squeeze out excess water. Allow it to dry
completely.
Fig. 23
Fig. 24 Fig. 25
6. Replace the air filter inside the air filter/muffler cover (Fig. 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.
2. Insert the four (4) screws into the holes in the air filter/muffler
cover (Fig. 21) and tighten.
Do not over tighten.
Air Filter
Inside Muffler
Cover
Blue Choke
Lever
Screws Screws
Position 2
Fig. 21
Fig. 22
MAINTENANCE AND REPAIR INSTRUCTIONS
WARNING: To avoid serious personal injury,
always turn your unit off and allow it to cool before
you clean or service it.
4. Apply enough clean SAE 30 oil to lightly coat the filter (Fig. 24).
5. Squeeze the filter to spread and remove excess oil (Fig. 25).
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. 26). 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.
Fig. 26
Spark Arrestor
Screen
Spark Arrestor
Hood
Screw
Muffler
Engine
Tabs
Slots