Briggs and Stratton Starter clutch


Old 11-22-14, 09:19 PM
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Briggs and Stratton Starter clutch

The starter clutch on my old flat head 11 hp is worn out inside. Someone put it back together with just 4 balls. Or maybe it's just worn from old age. Or the combo. The thing is. The entire mower is worth maybe 100 bucks tops. Hate to spring for a new starter clutch.

My question. I have an old 3.5 hp flat head Briggs. I saved it just to part out. Any chance the starter clutches will interchange? I'm guessing no. But it's stored 15 miles away. Thought I'd ask before I made the trip or sprung for a new starter clutch.

Thanks in advance.
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Old 11-23-14, 12:47 AM
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If it's the old style that uses a starter clutch, it should interchange.
Old 11-23-14, 06:16 AM
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Hello ih4630,

As Mr Cheese mentioned, these clutches are interchangeable. When installing the replacement make sure the end of your crankshaft is clean and smooth, Sometimes the shaft requires some cleaning with fine emery paper.

When installing wipe a little coat of 10w30 motor oil on the shaft with your finger, Only a little for you don't want it running down into the crank and flywheel area. Hold the clutch up side down then add a couple (3-4) drops of oil into the center, There's a piece of felt in the top that will absorb the oil and keep the shaft lubricated for a longer period of time.

Do not put any lube in the ball area of these clutches, Leave this area dry. When installing make sure it's tightened good on the shaft, A not so tight clutch can cause the flywheel to shift and shear the timing key.

Good Luck
Old 11-23-14, 07:20 AM
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Hard to say without the model numbers of each. But I think there's a real good chance they are compatible. But there were 2 styles of starters on those old 3.5's, and one didn't use the top clutch... the vertical pull cords just had a nut on the flywheel. If nothing else, you could probably replace the ball bearings in your clutch and it would probably work just fine.
Old 11-23-14, 09:24 AM
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Thanks for your reply. The flywheel cover is not original to the engine. And the engine has no #'s that i can find.. The engine is likely early to mid 80's. The flywheel cover looks mid 70's.

As for replacing the ball bearings. The ends of the chambers where the bearings rest are really worn and one or two have breaks in them. So the bearings work there way out. Hope this makes sense.


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