Air Filter Maintenance; Installing A Pre Wound Reel; Replacement Parts - MTD YARD-MAN YM400 Manual Del Operador

SECTION 7: MAINTENANCE AND REPAIR INSTRUCTIONS
Figure 19
NOTE: The spring must be assembled on the inner reel
before reassembling the cutting attachment.
14. Hold the inner reel in place and install the bump
knob by turning clockwise. Tighten securely.
Eyelet
Figure 20

Installing a Pre Wound Reel

1. Hold the outer spool with one hand and unscrew the
bump knob counterclockwise. See Figure 12.
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. See
Figure 13.
3. Remove the spring from the old inner reel. See
Figure 13.
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. See 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 the ends and
pull firmly to release the line from the holding slots in
the reel.
7. Hold the inner reel in place and install the bump
knob by turning clockwise. Tighten securely.

Replacement Parts

For replacement parts, refer to the Accessories /
Replacement Parts section.

Air Filter Maintenance

Removing the Air Filter/Muffler Cover
1. Place the choke lever in the PARTIAL choke position (B).
NOTE: The choke lever must be in the PARTIAL choke
Holding Slots
2. Remove the four (4) screws securing the air filter/
3. Pull the cover from the engine. Do not force.
Eyelet
Spring
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 the
air filter will VOID the warranty.
1. Remove air filter/muffler cover. See Removing the Air
2. Turn cover over and look inside to locate the air filter.
3. Wash the filter in detergent and water. See Figure 23.
4. Apply enough clean SAE 30 oil to lightly coat the
5. Squeeze the filter to spread and remove excess oil.
13
WARNING: To avoid serious personal injury,
always turn your trimmer off and allow it to
cool before you clean or service it.
position (B) to remove the air filter/ muffler cover.
See Figure 21.
muffler cover. See Figure 21. Use a flat blade or T20
Torx bit screwdriver.
Choke Lever
Screws
Figure 21
WARNING: To avoid serious personal injury,
always turn your trimmer off and allow it to
cool before you clean it or perform any
maintenance.
Filter/Muffler Cover.
Remove the air filter from inside the air filter/muffler
cover. See Figure 22.
Rinse the filter thoroughly. Squeeze out excess
water. Allow it to dry completely.
filter. See Figure 24.
See Figure 25.
Partial Choke
Position (B)
Screws