I have a Pro Gen Coleman Powermate with a 9hp Briggs.  185432 type 0606E1 code 99110949
The only valve adjustment I can find tells me .002-.004.  I set them both on .004 but was thinking the exhaust should be more like .006 ?   Can anyone confirm if what I found on that series engine is correct.  Thanks

Exhaust is usually looser than intake:
 
https://outdoorpowerinfo.com/engine_specs/briggs_valve_gaps.asp 
 
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SRTsFZ6
Exhaust is usually looser than intake:
 
 
 
That's what I was thinking but it don't seem that way on this engine.. 
185400OHV Single Cylinder.002 / .004.002 / .004

Looks like the .004", per the spec's is what they call for. 
 
You certainly wouldn't hurt anything haven't the gap slightly wider..
I'd probably try .005" and .007"...