Spark Arrester - Honda CRF250X Owner's Manual & Competition Handbook

Spark Arrester Inspection
The spark arrester must be serviced every 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 four bolts (2), spark arrester (3),
and gasket (4) from the muffler.
(2)
(3)
(4)
(1) muffler

(3) spark arrester

(2) bolts (4) gasket
3. Use a brush to remove carbon deposits from
the spark arrester screen. Be careful to avoid
damaging the spark arrester screen. The spark
arrester must be free of brakes and holes.
Replace, if necessary.
Check the gasket. Replace, if necessary.
4. Install the spark arrester and gasket in the
muffler (1) and tighten the four bolts (2) to
(1) the specified torque:
9 lbf·ft (12 N·m, 1.2 kgf·m)
(2)
(1) muffler
(1)
(2) bolts

Spark Arrester

65
Servicing Your Honda