Miller Electric Big Blue 500 PT, Owner'S Manual, Page: 48 / 90

OM-4429 Page 44
9-4. Inspecting And Cleaning Optional Spark Arrestor Muffler
803 656 / Ref. 215 158
!
Stop engine and let cool.
1 Spark Arrestor Muffler
2 Cleanout Plug
Remove plug and remove any dirt
covering cleanout hole.
Start engine and run at idle speed to
blow out cleanout hole. If nothing
blows out of hole, briefly cover end
of exhaust pipe with fireproof
material.
!
Stop engine and let cool.
Reinstall cleanout plug.
Tools Needed:
3/8 in
1
2
9-5. Checking Generator Brushes
Ref. 215 664
!
Stop engine and let cool.
1 Generator Brush
Remove brushes from brush holder.
Replace brushes if damaged or if brush
material is at or near minimum length.
1
Damaged Brushes
New Length: 1-1/4 in (32 mm)
Minimum Length:
5/8 in (16 mm)
Replace