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I have read somewhere(I forgot where) sometime ago that Briggs uses different governor springs,depending on the engine's intended purpose. This is in reference to the 500cc vertical engines,the 31C707-3026-G5 ,for example. The springs look alike but are color-coded as to the max rpm it will allow. Is there a source to find out any more info on this?
I know there is a wealth of knowledge here,so maybe this is the bast place to ask. TIA

This might be what you are looking for. Found these while doing a quick search but don’t know what engine they are for.

RPM P/N color
26-2800 793341 silver
28-3000 793342 dark blue
30-3200 793527 red
32-3400 793339 light green
34-3600 793340 orange
36-3800 793343 purple

Rivets said:

This might be what you are looking for. Found these while doing a quick search but don’t know what engine they are for.

RPM P/N color
26-2800 793341 silver
28-3000 793342 dark blue
30-3200 793527 red
32-3400 793339 light green
34-3600 793340 orange
36-3800 793343 purple

Click to expand...

This is exactly what I was looking for. I tried wording my searches in every way possible(I thought) and still got no results.
I have a light blue spring and it is govenering the engine at 2200 rpm wot. This seems to be ok for the mower,but Briggs says this engine should run at 3400 to 3600 rpm,both for oiling and cooling. Thank you very much for the list!
Sam

Some of those springs are idle governor springs, not governed top load springs.