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OM-494 Page 40
8-9. Inspecting And Cleaning Optional Spark Arrestor Muffler
Ref. 800 633-B / Ref. 190 377
Y Stop engine and let cool.
1 Spark Arrestor Muffler
2 Cleanout Plug
Remove plug and remove any dirt
covering cleanout hole.
3 Exhaust Pipe
Start engine and run several min-
utes to blow out cleanout hole. If
nothing blows out of hole, briefly
cover end of exhaust pipe with fire-
proof material.
Y Stop engine and let cool.
Reinstall cleanout plug.
Tools Needed:
3
2
1
3/8 in
Notes
16 Gauge (.063 in)
22 Gauge (.031 in)
24 Gauge (.025 in)
20 Gauge (.037 in)
18 Gauge (.050 in)
14 Gauge (.078 in)
1/8 in (.125 in)
3/16 in (.188 in)
1/4 in (.25 in)
5/16 in (.313 in)
3/8 in (.375 in)
1/2 in (.5 in)
MATERIAL THICKNESS REFERENCE CHART