Yep. Definitely a more common problem. I've had it happen on 12 700 and on my 16 Wolverine.
Starter Magnets Unglued
Hello,
Has anybody else had the magnets in their 700 starter come unglued? I have had it happen several times now.
The first time was a year or two ago on my 2014. My grizzly started making a dragging/whirring noise when hitting the starter. I assumed it was something with the one way bearing but upon disassembly and inspection I found that two of the magnets had come unglued. The magnets obviously stuck to the rotor but couldn't rotate because they are trapped in their position. The starter still seemed to work fine but they were dragging on the rotor.
I took the magnets and JB welded them back into position. It was difficult to get them located perfectly but I got them. I had read elsewhere that JB weld was one of the best ways to do this. Seemed to work great and saved my the price of a new OEM starter.
Fast forward to this year and I was hearing the noise again. I assumed that one of the ones I reglued came loose again. Took it apart and found the two that I glued still perfect. But that an ADDITIONAL magnet has come unglued now.
The kicker is that I have another 2015 Grizzly 700 that is making the same noise now. That one only has about 600 miles on it (the 2014 has almost 3500). The noise is basically identical and I am assuming that I will find the same issue when I take it apart.
What gives? Seems like a simple thing to do and I figured it was a fluke the first time it happened. But now it has happened a total of 3 times? I haven't really heard about this issue on the Grizzly forums, but it seems somewhat common on the street bike forums (usually resulting in the magnets being destroyed before they disassemble it, and with no magnets available separate, they end up having to buy a whole new starter...$$$).
Has anybody else had the magnets in their 700 starter come unglued? I have had it happen several times now.
The first time was a year or two ago on my 2014. My grizzly started making a dragging/whirring noise when hitting the starter. I assumed it was something with the one way bearing but upon disassembly and inspection I found that two of the magnets had come unglued. The magnets obviously stuck to the rotor but couldn't rotate because they are trapped in their position. The starter still seemed to work fine but they were dragging on the rotor.
I took the magnets and JB welded them back into position. It was difficult to get them located perfectly but I got them. I had read elsewhere that JB weld was one of the best ways to do this. Seemed to work great and saved my the price of a new OEM starter.
Fast forward to this year and I was hearing the noise again. I assumed that one of the ones I reglued came loose again. Took it apart and found the two that I glued still perfect. But that an ADDITIONAL magnet has come unglued now.
The kicker is that I have another 2015 Grizzly 700 that is making the same noise now. That one only has about 600 miles on it (the 2014 has almost 3500). The noise is basically identical and I am assuming that I will find the same issue when I take it apart.
What gives? Seems like a simple thing to do and I figured it was a fluke the first time it happened. But now it has happened a total of 3 times? I haven't really heard about this issue on the Grizzly forums, but it seems somewhat common on the street bike forums (usually resulting in the magnets being destroyed before they disassemble it, and with no magnets available separate, they end up having to buy a whole new starter...$$$).
1 - 18 of 18 Posts
Welcome to the club. Twice so far on my 2016 700 Grizzly. There’s over a dozen other similar tails on this site.
Happened to my 2013 700
I understand that this is not limited to Yamaha. These starters are build by Mitsuba. Many manufactures use them.
I understand that this is not limited to Yamaha. These starters are build by Mitsuba. Many manufactures use them.
Happened on my 2017 Grizzly at most inopportune time during elk season. Happens again and will try the JB bond idea or just install another like most of us will.
One of my co workers has 3 bikes sitting in one of the bays at work this weekend, his wife's 2015 grizzly and his 2022 850 outlander and his daughter's bf's 1000 sportsman (year unknown, but definitely newer). all 3 have the same issue, starter magnet delamination. The popo happened last summer and has been just unused since. The outty happened last week when he stopped plowing to go warm up cage back out and dragging start just like the grizz has done since Christmas. He's trying jbweld too before buying new starters. I saw the outty sitting outside all reassembled when I drove by so, assume it worked and is ready to go.
I’m reminded of ability to roll start my Grizzly if needed when I read about these starter issues.
It may have been mentioned before but wonder what years this started?
I have Polaris snowmobiles and ATVs that range 2000-2013 and never had an electric starter failure.
Sounds like it affects every brand now
It may have been mentioned before but wonder what years this started?
I have Polaris snowmobiles and ATVs that range 2000-2013 and never had an electric starter failure.
Sounds like it affects every brand now
Yep. Definitely a more common problem. I've had it happen on 12 700 and on my 16 Wolverine.
Welcome to the club. Twice so far on my 2016 700 Grizzly. There’s over a dozen other similar tails on this site.
Happened on my 2017 Grizzly at most inopportune time during elk season. Happens again and will try the JB bond idea or just install another like most of us will.
One of my co workers has 3 bikes sitting in one of the bays at work this weekend, his wife's 2015 grizzly and his 2022 850 outlander and his daughter's bf's 1000 sportsman (year unknown, but definitely newer). all 3 have the same issue, starter magnet delamination. The popo happened last summer and has been just unused since. The outty happened last week when he stopped plowing to go warm up cage back out and dragging start just like the grizz has done since Christmas. He's trying jbweld too before buying new starters. I saw the outty sitting outside all reassembled when I drove by so, assume it worked and is ready to go.
Wow, I looked around a while ago to see if it was a common failure or not and must have missed all of the threads about it then. Atleast I don't feel like it is just my luck.I’m reminded of ability to roll start my Grizzly if needed when I read about these starter issues.
It may have been mentioned before but wonder what years this started?
I have Polaris snowmobiles and ATVs that range 2000-2013 and never had an electric starter failure.
Sounds like it affects every brand now
The JB weld seems to be working great on the 2014. The original magnets (two) that I epoxied are still holding strong and the one that I just did (only one this time) is as well. The starter is nice and quiet now. If another one comes unglued then I will be tempted to see if I can pry all of the remaining ones off and glue them now rather than wait for them to come off down the road.
Just need to get the 2015 done as well now.
I am new to this forum. I bought an used 2016 grizzly 700 last year with only 700 miles on it and i have put 800 or so miles on it since owning it. A couple weeks ago starter developed a hesitation in it while starting and only got worse. Took starter off after reading threads about starter problems on here. My starters bonding adhesive let go as many others have, but my magnets do not look real damaged. I checked with dealer and TSB went out back in 2018 and they wanted $234 for factory and $180 for aftermarket (partzilla $180). I usually always buy OEM and preach to people I know about buying cheap parts but without knowing if problem has been fixed I ordered a Niche with starter relay and fuses for $57 on amazon which received very good reviews. And read someone on here got a Niche with good results (would be nice to have an update on the Niche starter). I also found a niche starter for $18 at edschrammotors.ca which I purchased through pay pal in case they are a fraud (I researched it and it seemed legit). I just had to see if this was a real deal or not. If not I will contest it.
While waiting on delivery I am considering rebonding my magnets to the housing. So I have been researching what kind of bonding agent is best but finding very little on the subject and I doubt a manufacture is going to give away trade secrets. I would like to know what Mitsuba used on my starter so could stay away from that.
I read on this site and other forums people have used JB Weld on their starters. Loctite, permatex and permabond have application for motor magnets but they seem to be specific to the type of magnet used. I am assuming the magnets are rare earth or permanent (could not find much on that subject either). Just wondering if anyone knew the best bonding agent for this particular application. The adhesive needs to be a high heat, high tensile strength, vibration and impact resistant naturally. Also I noticed that the bolts that attach the end caps to each end of field magnet housing is on the inside instead of outside like alot of atv or motorcycles starters are made. This creates a large gap between magnets essentially leaving only the bonding agent to hold magnets in place. I was thinking of putting a tube of sorts that bolts would go through and spacers or shims in between magnets along with gluing magnets to housing to basically lock magnets in place so they can not fall inward. I don`t know if trying to do all this would even be worth it and I have not decided whether or not I am even going to attempt it. If I do decide to rebond magnets I will update this post. Thanks for the info and thank all who have contributed to this forum.
While waiting on delivery I am considering rebonding my magnets to the housing. So I have been researching what kind of bonding agent is best but finding very little on the subject and I doubt a manufacture is going to give away trade secrets. I would like to know what Mitsuba used on my starter so could stay away from that.
I read on this site and other forums people have used JB Weld on their starters. Loctite, permatex and permabond have application for motor magnets but they seem to be specific to the type of magnet used. I am assuming the magnets are rare earth or permanent (could not find much on that subject either). Just wondering if anyone knew the best bonding agent for this particular application. The adhesive needs to be a high heat, high tensile strength, vibration and impact resistant naturally. Also I noticed that the bolts that attach the end caps to each end of field magnet housing is on the inside instead of outside like alot of atv or motorcycles starters are made. This creates a large gap between magnets essentially leaving only the bonding agent to hold magnets in place. I was thinking of putting a tube of sorts that bolts would go through and spacers or shims in between magnets along with gluing magnets to housing to basically lock magnets in place so they can not fall inward. I don`t know if trying to do all this would even be worth it and I have not decided whether or not I am even going to attempt it. If I do decide to rebond magnets I will update this post. Thanks for the info and thank all who have contributed to this forum.
To summarize my experience, my 2014 had two come unglued and I Reglue them with regular JB weld. Then I had two more (different ones, not the JB welded ones) come unglued and did the same thing. Then I had one more original one come unglued a 3rd time. I pried off the remaining 6th magnet that time and JB welded those two on as well. So aka all 6 out of 6 magnets are JB welded in that starter and it still works perfectly.I am new to this forum. I bought an used 2016 grizzly 700 last year with only 700 miles on it and i have put 800 or so miles on it since owning it. A couple weeks ago starter developed a hesitation in it while starting and only got worse. Took starter off after reading threads about starter problems on here. My starters bonding adhesive let go as many others have, but my magnets do not look real damaged. I checked with dealer and TSB went out back in 2018 and they wanted $234 for factory and $180 for aftermarket (partzilla $180). I usually always buy OEM and preach to people I know about buying cheap parts but without knowing if problem has been fixed I ordered a Niche with starter relay and fuses for $57 on amazon which received very good reviews. And read someone on here got a Niche with good results (would be nice to have an update on the Niche starter). I also found a niche starter for $18 at edschrammotors.ca which I purchased through pay pal in case they are a fraud (I researched it and it seemed legit). I just had to see if this was a real deal or not. If not I will contest it.
While waiting on delivery I am considering rebonding my magnets to the housing. So I have been researching what kind of bonding agent is best but finding very little on the subject and I doubt a manufacture is going to give away trade secrets. I would like to know what Mitsuba used on my starter so could stay away from that.
I read on this site and other forums people have used JB Weld on their starters. Loctite, permatex and permabond have application for motor magnets but they seem to be specific to the type of magnet used. I am assuming the magnets are rare earth or permanent (could not find much on that subject either). Just wondering if anyone knew the best bonding agent for this particular application. The adhesive needs to be a high heat, high tensile strength, vibration and impact resistant naturally. Also I noticed that the bolts that attach the end caps to each end of field magnet housing is on the inside instead of outside like alot of atv or motorcycles starters are made. This creates a large gap between magnets essentially leaving only the bonding agent to hold magnets in place. I was thinking of putting a tube of sorts that bolts would go through and spacers or shims in between magnets along with gluing magnets to housing to basically lock magnets in place so they can not fall inward. I don`t know if trying to do all this would even be worth it and I have not decided whether or not I am even going to attempt it. If I do decide to rebond magnets I will update this post. Thanks for the info and thank all who have contributed to this forum.
My 2015 had 5 of the 6 magnets come unglued all at once. I reglued all 5 of them with JB weld. That starter is still working perfectly right now also (although I am sure that last magnet will come unglued some day).
As for a replacement, I was planning to use this starter if one of mine was unrepairable.
It's very reasonably priced, but IMO still a better choice than Niche to me. I told myself I would never purchase another part from Niche and I don't plan on it (although Yamahas starters can't be much better...).
That 2015 only has a few hundred miles on it. The 2014 has almost 4000. So it's clearly a time thing more than it is a mileage thing causing the failure.
thanks for update Lst3. when u glued magnets back in housing did u place shims between each of the magnets radially? If so what thickness? Also did u use just the regular ole JB Weld. Plus any special instructions or things to watch out for while rebonding starter?
I think the main tip is to get ALL of the old glue off of both the magnet and the metal cylinder. I used a razor blade and scraped it all off of the magnet. Then an exacto knife to scrape it off of the metal cylinder. Then use denatured alcohol or something to wipe it all good before gluing.thanks for update Lst3. when u glued magnets back in housing did u place shims between each of the magnets radially? If so what thickness? Also did u use just the regular ole JB Weld. Plus any special instructions or things to watch out for while rebonding starter?
As for the type of JB weld, I used the normal original stuff. I believe it is the highest strength. The "quick cure" types are all weaker.
I just used some small washers and put them between the magnets to space them out. But I always had atleast one magnet still glued to space them off of. Make sure that when you space them out you make sure that the two bolt will still fit through between the magnets.
Thanks LST3 for info. When I first examined starter I took end caps off and only seen fine magnet shavings and assumed magnets were still whole. But last night took it completely apart and 3 or 4 of the magnet were broke into several pieces. I don`t know if it be feasible now to try to glue them back. Has anyone tried gluing theirs back together with magnets broke into pieces?
When I reglued my magnets back on I kindof figured that there was nothing to loose. Even if it fails again there is no way it will send shavings through the motor or ruin something else as it fails. So I didn't care about taking a risk to try it.Thanks LST3 for info. When I first examined starter I took end caps off and only seen fine magnet shavings and assumed magnets were still whole. But last night took it completely apart and 3 or 4 of the magnet were broke into several pieces. I don`t know if it be feasible now to try to glue them back. Has anyone tried gluing theirs back together with magnets broke into pieces?
That being said, I doubt that there is much that you can do to fix it if you have a broken magnet. Let alone having that many broken magnets.
To me and where I ride, one important item comes up and that is having the starter fail on you well into the backcountry where there is no cell service and would be a very long walk out. If one is riding with another OHV then this would be less of an issue.
So its more of a problem that the magnets come loose, not the magnets crumbling apart?
X-2 on riding in remote areas, I've never considered carrying a back-up starter.
X-2 on riding in remote areas, I've never considered carrying a back-up starter.
Both have been an issue. The magnets in 2013 700 crumbled.So its more of a problem that the magnets come loose, not the magnets crumbling apart?
X-2 on riding in remote areas, I've never considered carrying a back-up starter.
If may not be the glue not holding it may be the magnet delaminating from the glue.
So its more of a problem that the magnets come loose, not the magnets crumbling apart?
X-2 on riding in remote areas, I've never considered carrying a back-up starter.
I think the large majority of the time it is the magnet glue that is the root cause of the problem. They come unglued and then it is a crap shoot on how long until one (or multiple) of them gets broken from they are rattling/grinding/rubbing around inside of the starter as the rotor turns.Both have been an issue. The magnets in 2013 700 crumbled.
If may not be the glue not holding it may be the magnet delaminating from the glue.
I think that is compounded by the fact that just one or even two of them coming unglued can be hard to recognize immediately when it happens (especially if you aren't familiar with the noise and haven't had the issue previously). It will be a very slight rubbing noise, but it can start pretty quiet. By the time enough of them break free for the average person to notice there is a decent chance that it is already too late and at least one of the magnets has been severely damaged.
1 - 18 of 18 Posts
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