I removed the Briggs 5hp flathead from a 96 model Coleman generator that I was tired of tinkering with. I’ve since completely disassembled the Briggs, thoroughly cleaned, replaced seals/gaskets, assembled, idles smooth and sounds way better than before. My goal is to utilize this engine on a little 2 seater Manco go kart I’ve recently acquired. I understand that I can’t simply install a clutch or 30 series TC on the tapered crankshaft. If my measurements are correct, the shaft is right at 7/8” diameter for about 1.65”, then it tapers down quick with female threads in the end. I’ve watched a few YouTube videos where people have carefully shaved the shafts down to 3/4” and cut key ways. Before going that route, I decided to just replace it with a straight 3/4” crankshaft with a key way. I was advised to replace it with a Briggs & Stratton crankshaft 797018. Ordered one from Amazon for about $140. Due to my inexperience, I’m reaching out for knowledge and guidance. The old connecting rod & bearing cap does not mate to the new crankshaft. Is the solution as simple as finding the correct size connecting rod & bearing cap? Or will I need additional parts?
Briggs 5hp 135212
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Hellion
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Welcome to the forum, newbie! Good job on the cleanup and refresh on that old engine.
Getting an engine like yours to accept a standard clutch or TC should be as simple as replacing the crankshaft; it should fit the bearings in the block and the old connecting rod should bolt right up, so something is wrong.
Getting an engine like yours to accept a standard clutch or TC should be as simple as replacing the crankshaft; it should fit the bearings in the block and the old connecting rod should bolt right up, so something is wrong.
Hellion
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The entire engine code will just tell us what parts you already have, not what you need BUT it will tell us what crankshaft will best fit your engine and what kind of bearings it has.
Most any other 3/4" crankshaft from a 130200 series Briggs 5 HP (horizontal) flathead should work.
Most any other 3/4" crankshaft from a 130200 series Briggs 5 HP (horizontal) flathead should work.
Hellion
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I cross referenced your part number and it goes to a different vertical shaft engine (most typically lawnmower engines and some pressure washers) but it does appear to be a flathead.
The real giveaway was the part's availability on Amazon; most sources say "no longer available". Flathead 130000 series (a long discontinued engine series) are harder to find new. You might find NOS (new old stock) but used parts are probably your best bet.
Who advised you to buy Briggs #797018?
The real giveaway was the part's availability on Amazon; most sources say "no longer available". Flathead 130000 series (a long discontinued engine series) are harder to find new. You might find NOS (new old stock) but used parts are probably your best bet.
Who advised you to buy Briggs #797018?