Spark Arrester - Honda CRF250X 2007 Owner's Manual & Competition Handbook

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 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. Apply a seizure inhibitor (Three Bond 1901 or
equivalent) to the bolts threads. Install the
spark arrester and gasket in the muffler (1)
(1)
and tighten the bolts (2) to the specified
torque:
4.4 lbf·ft (6 N·m, 0.6 kgf·m)
(2)
(1) muffler
(1)
(2) bolts

Spark Arrester

65
Servicing Your Honda