Help removing a Briggs and Stratton flywheel - Lawn Mower Forums : Lawnmower Reviews, Repair, Pricing and Discussion Forum
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post #1 of 8 (permalink) Old 07-11-2019, 08:37 PM Thread Starter
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Help removing a Briggs and Stratton flywheel

I cannot get this flywheel off. Using a bolt type puller, the bolts just bend. I had washers on the bolts before this picture. Flywheel won’t budge at all. Any ideas?


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post #2 of 8 (permalink) Old 07-12-2019, 04:34 PM
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It's been a long time since I pulled a Briggs flywheel. As I recall i used penetrating oil on the shaft. Then I would prize on the bottom of the flywheel upward with a large screwdriver and lightly tap on it with a hammer up close to where the shaft comes through the flywheel. This has to be done rather lightly not to damage the flywheel. I keep moving the screwdriver over all the way around the flywheel to apply equal pressure all the way around. Tap and prize at the same time! This takes a little patients but always worked for me. Hope this helps! motorman

Last edited by motorman; 07-12-2019 at 04:40 PM.
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post #3 of 8 (permalink) Old 07-12-2019, 06:33 PM
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whack it on the thick solid flat side below where the fins are with a 4 or 5 lbs maul (not the fins) as you turn it so you get it on all sides and use your fingers to lift up on it. you are not trying to kill it but give it a good solid whack like you mean it, its solid cast so its not going to break unless you hit the fins

it will let go and come right off. its not just going to come off with a puller, it never does, but the shock of getting whacked with the maul makes it release very easy.

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post #4 of 8 (permalink) Old 07-13-2019, 09:44 AM
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put a prybar under the flywheel, use a sacrificial nut on the crankshaft end to protect the threads, and give a couple of good whacks on the end of the crank with a heavy hammer.
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post #5 of 8 (permalink) Old 07-13-2019, 01:53 PM
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All of the above are good suggestions. Also remember to tie down the handle bar bail to release the brake band from the flywheel.

Experience is something you don't get until just after you need it.
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post #6 of 8 (permalink) Old 07-13-2019, 08:09 PM Thread Starter
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Thanks everyone, I got it off.


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post #7 of 8 (permalink) Old 07-17-2019, 08:40 AM
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For the future - if you have access to dry ice, CO2 fire extinguisher (spray the parts) or canned air - turned upside-down and sprayed - these things will help shrink the metal. Kinda cool. Here we have used dry ice to shrink a boom on a 185 ton crane to replace the seals and the manufacture said it couldn't be done, they said we would have to cut them off, well we proved them wrong, lol.
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post #8 of 8 (permalink) Old Today, 12:14 PM
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Glad you got it off! If you have time please come back and tell up what method of removal worked for you
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