Air Filter Maintenance; Spark Arrestor Maintenance - MTD BCR4 Operator's Manual

MAINTENANCE & REPAIR INSTRUCTIONS

AIR FILTER MAINTENANCE

WARNING: To avoid serious personal injury,
always turn off your trimmer and allow it to
cool before you clean or maintain 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 the air filter cover by pulling up the two
tabs on the bottom back of the cover, then pull out
and up. See Figure 20.
2. Remove the air filter.
3. Wash the filter in detergent and water. Rinse the
filter thoroughly and allow it to dry.
4. Apply enough clean SAE 30 motor oil to lightly
coat the filter. See Figure 21.
5. Squeeze the filter to spread and remove excess oil.
See Figure 21.
Air Filter Cover
Air Filter
Tab
Choke
Lever
Back Plate
Slots
FIGURE 20
FIGURE 21
6. Reinstall the filter. See Figure 22.

SPARK ARRESTOR MAINTENANCE

1. Remove the muffler cover. Refer to the Rocker
Arm section.
2. Using a pair of pliers, remove the clip wrapped
tight around the spark arrestor screen. See
Figure 23.
Muffler
Clip
3. Remove the spark arrestor screen from the
muffler.
4. Clean the spark arrestor screen with a wire brush,
or replace it.
5. Reinstall the spark arrestor screen, clip, muffler
cover and screws.
17
FIGURE 22
Spark Arrestor
FIGURE 23