Firing order for Oliver Hart Parr 18-27 or 18-28

Mn Dave

Member
It's been so long that I can't remember what the firing order is. I got rid of my OHP tractors and manuals and now a fellow wants to know the firing order. If I remember isn't it cast into the side of the block someplace?
Thanks
 
Well I don't remember for sure either, and I can not look it up for at least a week but there are only two firing orders for a 4 cylinder inline engine, 1-2-4-3 or 1-3-4-2. Take the plugs out, get #1 comming up on compression stroke, then turn it 1/2 turn and see if compression is comming out of # 2 or #3.
 

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