Yard-Man LT31 - Manual (Page 13)

AIR FILTER MAINTENANCE
Removing the Air Filter/Muffler Cover
WARNING: To avoid serious personal injury,
always turn the unit off and allow it to cool
before you clean or perform any maintenance
on it.
1. Place the choke lever in Position 2, Figure 21.
NOTE: The choke lever must be in Position 2 to
remove the air filter/muffler cover, Figure 21.
2. Remove the four (4) screws securing the air
filter/muffler cover, Figure 21. Use a flat blade or
#T20 Torx bit screwdriver.
3. Pull the cover from the engine. Do not force.
Choke Lever
Screws Screws
Position 2
13
FIGURE 24 FIGURE 25
6. Replace the air filter in the air filter/muffler cover,
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.
NOTE: The choke lever must be in Position 2 to install
the air filter/muffler cover, Figure 21.
2. Insert the four (4) screws into the holes in the air
filter/muffler cover and tighten, Figure 21. Use a flat
blade or #T20 Torx bit screwdriver. Do not over-
tighten. Do not force.
Air Filter
Inside Muffler
Cover
FIGURE 23 FIGURE 22
Clean and re-oil the air filter every 10 hours of operation.
It is an important item to maintain. Failure to maintain
the air filter will VOID the warranty.
1. Remove air filter/muffler cover. See Removing the
Air filter/Muffler Cover.
2. Remove the air filter from behind the air filter/muffler
cover, Figure 22.
3. Wash the filter in detergent and water, Figure 23.
Rinse the filter thoroughly. Squeeze out excess
water. Allow it to dry completely.
4. Apply enough clean SAE 30 oil to lightly coat the
filter, Figure 24.
5. Squeeze the filter to spread and remove excess oil,
Figure 25.
INSTALLING A PREWOUND REEL
1. Hold the outer spool with one hand and unscrew
the bump knob counterclockwise, Figure 11. Inspect
the bolt inside the bump knob to make sure it
moves freely. Replace the bump knob if damaged.
2. Remove the old inner reel from the outer spool, Figure 12.
3. Remove the spring from the old inner reel, Figure 12.
4. Place the spring in the new inner reel.
NOTE: The spring must be assembled on the inner
reel before reassembling the cutting head.
5. Insert the ends of the line through the eyelets in the
outer spool, Figure 20.
6. Place the new inner reel inside the outer spool. Push the
inner reel and outer spool together. While holding the inner
reel and outer spool, grasp each of the ends and pull
firmly to release the line from the holding slots in the spool.
7. Hold the inner reel in place and install the bump
knob by turning clockwise. Tighten securely.
FIGURE 21
Cleaning the Air Filter
WARNING: To avoid serious personal injury,
always turn the unit off and allow it to cool before
you clean or perform any maintenance on it.