Cleaning Spark Arrestor - KTM 500 EXC US Owner's Manual

12 SERVICE WORK ON THE CHASSIS
12.31

Cleaning spark arrestor

Warning
Danger of burns The exhaust system gets very hot when the vehicle is driven.
–
Allow the exhaust system to cool down. Do not touch hot components.
Info
Soot particles accumulate on the screen of the spark arrestor over time.
This changes the performance characteristics.
Preparatory work
–
Remove the main silencer. (
Main work
–
Remove screws  and take off silencer cap
Warning
Danger to health Soot particles irritate the eyes and mucuous membranes.
–
Wear suitable breathing and eye protection when cleaning the main silencer and carbon screen.
–
Clean the main silencer housing
–

Mount a new O-ring
–
Position silencer cap 
Guideline
Screws on the main silencer
Finishing work
–
Install the main silencer. (
p. 64)
 with O-ring
 
and screen

on silencer cap .
. Mount and tighten screws
p. 64)
 .
of the spark arrestor with compressed air.
 .
M5
402269-10
7 Nm (5.2 lbf ft)
65