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sandyhillbill

kohler flywheel

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sandyhillbill
I just finished replacing the 20 hp m20s in my sunstar with a engine from SMALL ENGINE WAREHOUSE and will probably rebuild the old one and retro-fit it into the 7116h that I have had problems locating a oem engine for. One problem I know that I will face is the alternator and the permanant magnets in the flywheel. They are supposed to be "glued" to the inside of the flywheel but mine have come "unglued" and thus the battery will not stay charged. Has anyone had this problem in the past and if so what can I use to re-attach these magnets to the flywheel? I was thinking maybe JB WELD or some type of epoxy. Another thing that crossed my mind is there a wrong way to put these magnets back in as to north pole and south pole?

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Al
Hi, I believe I did a post about these. I have repaired them before. If this happens make sure they DO NOT get out of sequence. When we take the flywheel off we mark them with yellow paint 1, 11, 111 etc to keep then in sequence and orientated correct side out. If some are stuck to the stator we put them in the flywheel where they belong. When the flywheels are made in the factory they are "magnetized" after the magnets are put in. When I saw this I could understand how they could keep track of the polarity of the magnets etc. Your flywheel may have one magnet missing, if it does, it is just a lower amp system. We sand the flywheel out, the out lines of the magnets will still show. We then wire wheel the glue off the backs of the magnets. Next we epoxy them in. I usually use a vise grip C type clamp the squeeze them tight and the excess glue out. Normally they will stay after the squeeze. Just be sure they go back in in the exact sequence and orientation they came out. If not the charging system won't work and the stator will get hot. I have tried to figure out how to sort them and have been unable to do so. My 2 cents worth and its free, value accordingly. Good luck, Al Eden

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sandyhillbill
thanks for the reply to my post. I was beginning to think I had bad breath or maybe my deodorant wasn't working. haha. I did get one e-mail from a member that would sell me a used flywheel. That may be my best approach to this problem. The magnets are marked with a white mark to the outside but only one mark to each magnet. If my thinking is correct all 6 magnets should go back in with the mark to the outside and all the poles will be in the same sequence or direction. I will probably play with it and experament with it and see what I come up with. Thanks again for the reply AL.

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