Installing A Prewound Reel; Air Filter Maintenance - MTD Yard-Man YM90BC Manual De Instrucciones

NOTE: Always use the correct line length when installing trimming
line on the unit. The line may not release properly if the line
is too long.
Single Line Installation
Go To Step 8 for SplitLine™ Installation
6. Take approximately 18 feet (6 m) of new trimming line, loop it
into two equal lengths. Insert each end of the line through one
of the two holes in the inner reel (Fig. 31). Pull the line through
the inner reel so that the loop is as small as possible.
7. Wind the lines in tight even layers, onto the reel (Fig. 32). Wind
the line in the direction indicated on the inner reel. Place your
index finger between the two lines to stop the lines from over-
lapping. Do not overlap the ends of the line. Proceed to step 11.
SplitLine™ Installation
8. Take approximately 9 feet (3 m) of new trimming line. Insert
one end of the line through one of the two holes in the inner
reel (Fig. 33). Pull the line through the inner reel until only
about 4 inches is left out.
9. Insert the end of the line into the open hole in the inner reel and
pull the line tight to make the loop as small as possible (Fig. 33).
10. Before winding, split the line back about 6 inches.
11. Wind the line in tight even layers in the direction indicated
on the inner reel.
NOTE: Failure to wind the line in the direction indicated will cause
the cutting attachment to operate incorrectly.
12. Insert the ends of the line into the two holding slots (Fig. 34).
MAINTENANCE AND REPAIR INSTRUCTIONS
Loop
Fig. 31
Fig. 32
Fig. 33
Holding Slots
Fig. 34
13. Insert the ends of the line through the eyelets in the outer
spool and place inner reel with spring inside the outer spool
(Fig. 35). 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.
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 counterclockwise. Tighten securely.

INSTALLING A PREWOUND REEL

1. Hold the outer spool with one hand and unscrew the bump knob
clockwise (Fig. 27). 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 (Fig. 27).
3. Remove the spring from the old inner reel (Fig. 27).
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 (Fig. 35).
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 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:
always turn your unit off and allow it to cool
before you clean or service it.
1. Place the blue choke lever in Position 2.
2. Remove the four (4) screws securing the air filter/muffler
cover (Fig. 24). Use a flat blade or T20 Torx bit screwdriver.
Loop
3. Pull the cover from the engine. Do not force.
Screws
Spring
Fig. 35
To avoid serious personal injury,
Blue Choke
Lever
Screws
Fig. 36
13