Bolt size

[flyineagle]

Mornin! First time on this forum - thanks for taking a look. Simple question, I guess but I can't find an answer anywhere else. Need the bolt size for the valve cover on a Kohler Courage 20hp motor. I looked in the repair manual and all it said was "screw". Any help is great appreciated!

 

[Scrubcadet10]

This should be it, assuming it's an SV600 model, M6X1.0X20 You can probably get them much cheaper at Mcmaster Carr.com or at Bolt Depot....
SCREW,FLG THD FRM M6X1.0X20
they are "Thread Forming screws"