formariz 11,987 #1 Posted January 16, 2016 Picked up a NOS K301 today that it has been on the shelf since the 70's. It had a disturbing rattle under flywheel when moved by hand. Took off flywheel and found that adhesive failed on all but one magnet. One has also cracked in half. It was obviously exposed to some moisture. What is the recommended glue to glue them back into place? Share this post Link to post Share on other sites
russellmc301 600 #2 Posted January 16, 2016 (edited) jb weld is always been a fix it all thing, but i don't know if effect anything. Edited January 16, 2016 by russellmc301 Share this post Link to post Share on other sites
AMC RULES 37,125 #3 Posted January 16, 2016 Covered in post #42 here... ...used a two part epoxy to reattach them to the flywheel, with good results. Share this post Link to post Share on other sites
pacer 3,168 #4 Posted January 17, 2016 Epoxy or JB will do fine - the secret is gonna be to get the areas CLEAN! I had 2 to shatter and one broke in 2 pieces, I used JB replacing the shattered ones and putting the 2 pieces back together after sand blasting. Now have some 10-12hrs on the engine and no probs. Share this post Link to post Share on other sites
gwest_ca-(File Mod) 11,029 #5 Posted January 17, 2016 Each magnet's polarity has to be oriented in the correct direction also does it not? Alternating possibly? Garry Share this post Link to post Share on other sites
KC9KAS 4,741 #6 Posted January 17, 2016 11 hours ago, pacer said: Epoxy or JB will do fine - the secret is gonna be to get the areas CLEAN! I had 2 to shatter and one broke in 2 pieces, I used JB replacing the shattered ones and putting the 2 pieces back together after sand blasting. Now have some 10-12hrs on the engine and no probs. The broken pieces will have opposite polarity when you try to "re-attach" them. 5 hours ago, gwest_ca said: Each magnet's polarity has to be oriented in the correct direction also does it not? Alternating possibly? Garry This is what I am I was thinking! Share this post Link to post Share on other sites
pacer 3,168 #7 Posted January 17, 2016 My replacing the magnets were a while back and my memory isnt so good anymore -- but, I'm pretty sure when placing the magnet in the flywheel it'll only go one way. If placing it 'backwards" it will jump back out Share this post Link to post Share on other sites
formariz 11,987 #8 Posted January 17, 2016 The plot thickens? I do have some literature here regarding magnet polarity. I wonder if it makes a difference here. All of my magnets are curved to fit wheel so they can't be reversed. They can however be flipped end for end. Most of them have a orange mark on one side. Share this post Link to post Share on other sites
stevasaurus 22,698 #9 Posted January 17, 2016 Cas, in the Kohler manual...Section 8 page 1...the magnets polarity is alternated so as to produce an alternating current. Alternate North and South poles. 1 Share this post Link to post Share on other sites
formariz 11,987 #10 Posted January 18, 2016 9 hours ago, stevasaurus said: Cas, in the Kohler manual...Section 8 page 1...the magnets polarity is alternated so as to produce an alternating current. Alternate North and South poles. Can you give me link to it? Somehow I can't see that in all the manuals known to me. I am also wondering if I have a 15 or a 30 amp system. Share this post Link to post Share on other sites
formariz 11,987 #11 Posted January 18, 2016 (edited) Found it. It however just confused me even more. When testing for polarity on magnets I found that these magnets have the same polarity on both ends and the reverse in the center. After a little more research though my literature I found the clarification to my confusion. I had printed this years back from researching some stuff about Tecumseh ignitions. The way it is described on the Kohler site is really not correct as it pertains to the individual magnets.Here is the link to it http://enginesandmagnets.com/id2.html. Here is the end result on my flywheel, blue dots is South, green dots is North. Edited January 18, 2016 by formariz 2 Share this post Link to post Share on other sites
Molon_Labe 731 #12 Posted January 18, 2016 Here's a humorous tutorial on Kohler flywheel magnet repair. At 5:20 he mentions using JB Weld for the magnets. 1 Share this post Link to post Share on other sites
formariz 11,987 #13 Posted January 18, 2016 That video is awesome ! 1 Share this post Link to post Share on other sites
stevasaurus 22,698 #14 Posted January 18, 2016 Absolutely awesome video...what a riot. Cas, here is that link to the Kohler Manual. https://docs.google.com/file/d/0B0skuszqFgg-YTk0ODdjMmYtMjQwMi00NDQ0LTk1YmItZGY4ZmEzODI2MDNk/edit?pli=1 Share this post Link to post Share on other sites
