MTD Yard Machines LT31CS Operator's Manual page 17

INSTALLING A PREWOUND REEL
1. Hold the outer spool with one hand and unscrew the
bump knob clockwise, Figure 15. 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 24.
3. Remove the spring from the old inner reel.
4. Place the spring in the new inner reel.
NOTE: The spring must be assembled on the inner reel
before reassembling the cutting attachment.
5. Insert the ends of the line through the eyelets in the
outer spool, Figure 32.
6. Place the new inner reel inside the outer spool. Push
the inner reel and outer spool together. While holding
the the reel and spool, grasp 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 counterclockwise. Tighten securely.
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 the PARTIAL choke
position (B), Figure 33.
NOTE: The choke lever must be in the PARTIAL
choke position (B) to remove the air
filter/muffler cover, Figure 33.
2. Remove the four (4) screws securing the air
filter/muffler cover, Figure 33. Use a flat blade or
#T20 Torx bit screwdriver.
3. Pull the cover from the engine. Do not force.
Choke Lever
Screws
FIGURE 33
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.
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
2. Remove the air filter from behind the air filter/muffler
3. Wash the filter in detergent and water, Figure 35.
4. Apply enough clean SAE 30 oil to lightly coat the
5. Squeeze the filter to spread and remove excess oil,
Partial Choke
Position (B)
6. Replace the air filter in the air filter/muffler cover,
NOTE:
Screws
Reinstalling the Air filter/Muffler Cover
1. Place the air filter/muffler cover over the back of the
NOTE:
2. Insert the four (4) screws into the holes in the air
17
Air filter/Muffler Cover.
cover, Figure 34.
Rinse the filter thoroughly. Squeeze out excess
water. Allow it to dry completely.
filter, Figure 36.
Figure 37.
Air Filter
Inside Muffler
Cover
FIGURE 34
FIGURE 36
Figure 34.
Operating the unit without the air filter and air
filter/muffler cover assembly, will VOID the
warranty.
carburetor and muffler.
The choke lever must be in the PARTIAL choke
position (B) to install the air filter/muffler cover,
Figure 21.
filter/muffler cover and tighten, Figure 33. Use a flat
blade or #T20 Torx bit screwdriver. Do not over-
tighten. Do not force.
FIGURE 35
FIGURE 37