Spark Arrester - Honda CRF450X 2020 Owner's Manual & Competition Handbook

Spark Arrester

Spark Arrester Inspection
The spark arrester must be serviced every 1,000 mi
(1,600 km) of running or 100 operating hours to
maintain its efficiency.
Regular servicing prevents carbon buildup (which
can diminish engine performance) and also
complies with USDA regulations for regular
maintenance to assure proper function.
The spark arrester prevents random sparks from
the combustion process in your engine from
reaching the environment.
1. Allow the engine and muffler (1) to cool.
2. Remove the tail cap cover bolts (2), washers
(3) and tail cap cover (4) from the muffler.
(3)
(3)
(2) (2)
(3)
(2)
(4)
(1) muffler
(2) tail cap cover bolts
(3) washers
(4) tail cap cover
3. Remove the glass wool (5).
(5)
(5) glass wool
4. Remove the spark arrester mounting bolts (6),
spark arrester (7) and gasket (8) from the
muffler (1).
(6)
(1)
(6)
(1) muffler
(6) spark arrester mounting bolts

(7) spark arrester

(8) gasket
5. Use a brush to remove carbon deposits from
(9) spark arrester screen
6. Install a new gasket (8) and the spark arrester
(7) (8) (1)
(1) muffler
(6) spark arrester mounting bolts
(7) spark arrester
(8) gasket (new)
Spark Arrester
the spark arrester screen. Be careful to avoid
damaging the spark arrester screen (9). The
spark arrester must be free of breaks and holes.
Replace, if necessary.
(9)
(7) in the muffler (1) and tighten the spark
arrester mounting bolts (6) to the specified
torque:
6.6 lbf·ft (9.0 N·m, 0.9 kgf·m)
(6)
(6) (7)
Servicing Your Honda
(8) (1)
(cont'd)
129