Spark Arrestor Maintenance - McCulloch MB290 Manual De Usuario

MAINTENANCE AND REPAIR INSTRUCTIONS
Fig. 10

SPARK ARRESTOR MAINTENANCE

WARNING:
always turn your unit off and allow it to cool
before you clean or service it.
1. The spark arrestor is located in the muffler, under the
engine cover. When facing the unit from the front, the
muffler and spark arrestor are positioned on the left
hand side (Fig. 12).
2. To access the muffler and spark arrestor, you must
remove the engine cover. Using a T-25 torx or
flathead screwdriver, remove the five engine screws
pictured in Figure 13.
NOTE: You will have to remove the spark plug to access
one of the engine cover screws (Screw 5) (Fig. 13).
3. Once the engine cover is removed, the muffler heat
shield is visible. Remove the three screws from the
shield with a Phillips screwdriver. Then remove and
store the heat shield to reveal the muffler.
4. Remove the remaining three screws that secure the
muffler deflector plate to the muffler. Also remove he
two bolts. Use a Phillips screwdriver for the screws and
a T-25 torx screwdriver for the muffler bolts (Fig. 14).
5. Remove the spark arrestor and clean it with a wire
brush. Replace it if it is damaged or if you are unable to
clean it thoroughly.
6. Reinstall spark arrestor and reattach the muffler
deflector plate with the bolts and screws.
12
Fig. 9
Fig. 11
To avoid serious
personal injury,
Muffler
and Spark
Arrestor
Screws
Spark
Plug
Removed
to Access
Screw 5
7. Reinstall the heat shield using the three screws.
8. Put the engine cover back on the unit and reinsert the
five screws.
9. Reconnect the spark plug.
Heat
Shield
Spark
Arrestor
Muffler
Remove
Spark Plug
Screw 5
Fig. 12
Screws
Fig. 13
Muffler Bolts
Muffler
Deflector Plate
Fig. 14