Koehler 5ecd Knocking sound

Pierpressure1

Active Member
Sep 8, 2015
274
Richmond, VA
Boat Info
1998 400 Sedan Bridge
Engines
Cat 3116
I fired up my generator for the first time yesterday and had two issues. The first is that there was a small amount of oil coating the flame aresster which I think could have been residual from winterization.

The second issue that really has me concerned is a knocking sound coming from somewhere near the carburetor. When I first start it is is fine but after running for a minute or so it starts to knock.

Any ideas on on this one?

It is a Kohler 5ecd in my 2006 340 SDA.
 
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