It loosens counter clockwise laying under it looking up, You can bring a piston up to TDC compression stroke. Remove the spark plug then back the piston back down the cylinder a little, Feed about 8 or 10" of number 4 1/2 recoil rope into the cylinder leaving some sticking out for removal. Then as you go to loosen the clutch bolt the piston will hit the rope and pin the crank from spinning.
When ready to re-install the bolt run the piston back down and remove the rope. Now rotate the piston a little past TDC compression stroke then re-insert the rope and tighten.
This procedure is outlined in the Briggs service manuals.
Originally Posted by piston slapper
You never learn anything until you admit you don't know it all...
"Why go out preserved when you can go out beat up, worn out, sliding in sideways screaming, Holy Sh!t What A Ride" !!!