Checking Generator Brushes; Inspecting And Cleaning Optional Spark Arrestor Muffler - Miller Big Blue 400 Pro Owner's Manual

8-5. Checking Generator Brushes

1

8-6. Inspecting And Cleaning Optional Spark Arrestor Muffler

3
1
2
.
Complete Parts List is available at www.MillerWelds.com
Replace Assembly if
Brushes are Damaged
New Length:
5/8 in. (16mm)
Minimum Length:
1/4 in. (6.5mm)
!
Stop engine and let cool.
1 Generator Brush Assembly
Mark and disconnect leads at brush hold-
er assembly. Remove assembly. Press
on brush to be sure springs compress.
Replace assembly if brushes are dam-
aged or if brush material is at or near mini-
mum length. Check length from brush-
1
holder surface.
GenBrush2 2014-10 / Ref 205 725
!
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 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.
803 582 / Ref. 245 609
OM-278215 Page 49