My same Jack shaft bearing started making noise after about 4 hours of use. I immediately parked it since I had a torque converter kit for it from Go Power Sports and was going to be replacing the stock clutch and jack shaft anyway. I found the grease seal on the outer bearing was loose and the grease had mostly come out. I ordered a pair of American made Timken bearings from Amazon for $24.00 including shipping since I didn't want to mess with anymore Chinese crap bearings and have to replace it again. I installed the torque converter and got 3 times the speed with out further modifications other than bending the throttle stop tab flat. I installed the Temkin's in the jack shaft although I will probably never use them. They will go to the next owner of the bike if I ever sell it. Thanks for the video.
Same thing happened to mine I’ve got the same bike. Replaced my bearings and same deal happened again. I found out the rubber bearing seal was getting hot and melting away and grit was getting inside. Got bearings with metal seals and haven’t had the problem since.
First & only video that shows you how to change your Jachshaft bearings & I just got the same ones in the mail today & this video helped a lot! Thanks!!
You should have 90 days warranty but like I,m not confident in Coleman with my little interactions w them, your comment you will be working on fixing stuff is right on. We bought 2 bikes and 1 is broken the shaft has lost the castle nut so I will be doing the repair too
Yes when you build it. It tells you the slack for the chain. Mine came tite. I had to let it a lil loose. Runs perfect. If you left it to spec. Your going to ruin that bearing.
6203rs bearings are used in idler pulleys on my Cub Cadet 50 inch mower deck(and probably others). I just replaced a couple which seized from dirt/debris. About $4 on Amazon.
i have finally solved the problem surrounding the jackshaft bearings, my problem was that the rear tire was out of line and the chain too tight to pop off, i ordered a chain alignment tool and realized that trying to line up and match both sides of the chain tension screws symmetrically does not work, this would be due to manufacturing tolerances, the hole on the left side of the frame may be slightly farther forward or rearward of the hole of the right side of the frame. this has also solved my brakes rubbing issue. get a chain alignment tool and align everything that way, do not try to symmetrically match both chain tension screws or you may find your chain popping or damage to the jackshaft and or sprockets
Thats crazy ive had same bike since june and its been through alot of mud snow and water and its only popped chain once and clutch chain once from a fall
Have the exact same problem on a 2020 CT200u-ex i just bought used. Hopefully these cheap metal seal amazon bearings (6203ZZ) will be better that the oem that came in the jackshafts of these bikes. Thanks for the video Johnny Mullet!
@@TonyMontana-lh5bp Yes, just installed them last night. Was a major pita and i ended up damaging one of them. They fit very tight. I found them on amazon for $7.99 for 4 of them. Bike seems to be running fine again.
@@brg88tx thanks for the response. I hope they hold up for you. I just ordered a set of them. My bike has VERY few hours on it and one of the bearings went out. Possibly due to the chain being too tight from the factory.
Throw a torque converter on it you want regret it mine went 24 I removed the jackshaft and put on a torque converter and now it goes 38 and will pop wheelies with raw power
Same thing happened here 2 hours of riding and there goes the bearing. Also coleman didn't not help me with my warranty. Make sure everything is lubed and loosen chain since my bike had a very tight chain when I got it.
I just bought a used Coleman mini bike ct200u a - May 2018 Model, Does anybody know if it should have JUST a single chain set up?? that's what this one has I bought " Single Chain, it chatters constantly when nailing the gas, so I pull the clutch like I see on youtube to grease it up, stills does it, my sons were looking at it tonight and said the chain looks like its doing something weird on the clutch. I'll get into it some tomorrow. HELP!!! :P
What's the best drive and driven sprocket combination so I can solve the over slack in the rear chain to my Coleman ct200uex ? No matter how it's tightened back up, it gets loose again. Why not make it do it just stays that way ? I'm finding out that this causes bearing problems to the driver bearing. Thanks. Great video.
Excellent video. A high temp grease or white lithium is a good grease to use. Packing a bearing is an art form. I use the palm method myself. These things come from China. On the boat things dry out and I'm sure the grease is nonstandard. Made to fail. Timken or SKF are best. I've found bearings that have no grease at all. Thanks for sharing.
Thanks Johnny. Great information. I just bought this exact bike for $100. It was sitting on the side of the road in front of a guys house. It was abused pretty bad and I’ve been working on it the last two days. Any way I can have a conversation with you with some questions? Thanks. Steve
Idk if it was factory negligence or what but I swear when I got my minibike after 2 hours the chain to the wheel came off and when I removed the cover I unknowingly noticed there was only one bearing in the rear but had no idea,fast forward to today and it's completely obliterated
I'm not sure what the hell the problem is with mine. Mine's not a Coleman though. I have a 196cc X-PRO200 Mini Bike which is basically the same thing as the MB200. But it's not like it's an old bike and I've put hundreds of miles on it. I have only had it about a 1/2 a year or so and haven't ridden it a whole lot either and just today when I decided to take it for a little stroll I hear some weird noise coming from somewhere in or around the engine. Sounded like it might be where the pull start wheel is. Made what sounded like a rubbing sound almost but louder. I am not a mechanic by any means and have no clue how to pin point the problem. It doesn't make the noise the entire time the engine is running it usually starts making the rubbing noise when I am in the middle of gassing it and then it'll stop making the noise before I can come to a stop to see what it is. Doesn't make the noise when it is stopped only while riding. Meanwhile I have a Torque Converter and Riser Plate coming to me in the mail and I hope I'm not wasting my time putting those on if the engine itself is having issues running on it's own.
I experienced that failure 12/28/2020 and I used O'reily's wheel bearings part number A-1 it fit perfectly so with this bearing throw away the outer ring that these bearings come with because it wont fit with it on be sure to pack all bearings before installation u put the back bearing on first put the shaft inside make sure every part has grease on shaft install dont worry about hitting the bearings in housing the easiest way I have found was using the nut to tighten all parts however i found it to be very difficult to tighten without putting on the chain and getting a very small screw driver to put through the chain so u can tighten locking nut u must tighten enough to put cotter pin hole it's very difficult but u can do it after a few curse words once chains are on the back tire wheel lock up its suppose to do that start it up give throttle but not to much just enough to turn the chain slowly u should hear a pop when u do you'll notice right away u can move the back tire freely that means ur bearing popped into place take it for a ride until u hear a second pop once u hear the second pop ur bike now has both bearings installed and aligned properly be sure to make any adjustments necessary and check clutch chains, bearings, etc.
My theory they sell them thinking most people will mod them up. Clutch and shaft are pointless imo. I Spend extra 80 on torque convt. 100 on Mikuni carb I’m 6’3 275 and mine does 68 wot. But some think they shouldn’t have touch after they buy
I used a speedometer app and I’ve got like 300 miles on mine it’s broke down a lot of times I fixed a lot of shit I have a 2019 Coleman CTU 200 is the black digital one
I appreciate knowing what's inside these. About to tear into mine ... the jackshaft won't spin the main chain sprocket. So maybe the woodruff key is gone? I'll know shortly. But I'll also order a torque converter now; dealing with this, and then the secondary chain that needs occasional oil? No thanks.
Yep, the woodruff key disintegrated. And the axle slot it fits in is rounded out on one side ... not the backside as you might expect from applied power, but the front side. My guess is that the woodruff key was allowed to wiggle around in there until it got twisted and began to shear. I could fix it with a different jackshaft, but seriously, why bother? Off to research torque converter setups now.
@@thenexthobby The torque converter is the way to go on these bikes. You get better low end and higher top speed and don't really have to do much to the engine.
came for the mini bikes, stayed for the mullet. mad respect, best mullet ive ever seen hands down!!!
My same Jack shaft bearing started making noise after about 4 hours of use. I immediately parked it since I had a torque converter kit for it from Go Power Sports and was going to be replacing the stock clutch and jack shaft anyway. I found the grease seal on the outer bearing was loose and the grease had mostly come out. I ordered a pair of American made Timken bearings from Amazon for $24.00 including shipping since I didn't want to mess with anymore Chinese crap bearings and have to replace it again. I installed the torque converter and got 3 times the speed with out further modifications other than bending the throttle stop tab flat. I installed the Temkin's in the jack shaft although I will probably never use them. They will go to the next owner of the bike if I ever sell it. Thanks for the video.
As a teenager I had a minibike I loved it good information thanks I'm looking forward to seeing the upgrades
Same thing happened to mine I’ve got the same bike. Replaced my bearings and same deal happened again. I found out the rubber bearing seal was getting hot and melting away and grit was getting inside. Got bearings with metal seals and haven’t had the problem since.
Thank you , i got the same probleme !! I found the 40x17x12 (6203RS) bearing at the Princess auto !
I have a massimo mb200 and this video helped me out alot thank you!
First & only video that shows you how to change your Jachshaft bearings & I just got the same ones in the mail today & this video helped a lot! Thanks!!
Great video. You are a great educator!
thanks for this video it helped me to fixed my mini bike
You should have 90 days warranty but like I,m not confident in Coleman with my little interactions w them, your comment you will be working on fixing stuff is right on.
We bought 2 bikes and 1 is broken the shaft has lost the castle nut so I will be doing the repair too
Yes when you build it. It tells you the slack for the chain. Mine came tite. I had to let it a lil loose. Runs perfect. If you left it to spec. Your going to ruin that bearing.
6203rs bearings are used in idler pulleys on my Cub Cadet 50 inch mower deck(and probably others). I just replaced a couple which seized from dirt/debris. About $4 on Amazon.
You're right thank you, I helped my neighbor get a new one BT200X, less than 3 weeks BEARING FAILURE!
Mullet is back!!!
i have finally solved the problem surrounding the jackshaft bearings, my problem was that the rear tire was out of line and the chain too tight to pop off, i ordered a chain alignment tool and realized that trying to line up and match both sides of the chain tension screws symmetrically does not work, this would be due to manufacturing tolerances, the hole on the left side of the frame may be slightly farther forward or rearward of the hole of the right side of the frame. this has also solved my brakes rubbing issue. get a chain alignment tool and align everything that way, do not try to symmetrically match both chain tension screws or you may find your chain popping or damage to the jackshaft and or sprockets
Drill and tap a hole in the bearing tube and fit a grease zerk.
The 10 year olds that are forced to work in the factories over in china don't pay much attention to detail for some reason.
Thats crazy ive had same bike since june and its been through alot of mud snow and water and its only popped chain once and clutch chain once from a fall
Can someone please post link to where one can purchase the Jackshaft bearing?
Have the exact same problem on a 2020 CT200u-ex i just bought used. Hopefully these cheap metal seal amazon bearings (6203ZZ) will be better that the oem that came in the jackshafts of these bikes. Thanks for the video Johnny Mullet!
Have you installed these yet?
@@TonyMontana-lh5bp Yes, just installed them last night. Was a major pita and i ended up damaging one of them. They fit very tight. I found them on amazon for $7.99 for 4 of them. Bike seems to be running fine again.
@@brg88tx thanks for the response. I hope they hold up for you. I just ordered a set of them. My bike has VERY few hours on it and one of the bearings went out. Possibly due to the chain being too tight from the factory.
I've had mine for a week... rode it up and down the street several time... haven't even refilled the gas tank... same failure.
Throw a torque converter on it you want regret it mine went 24 I removed the jackshaft and put on a torque converter and now it goes 38 and will pop wheelies with raw power
Same thing happened here 2 hours of riding and there goes the bearing. Also coleman didn't not help me with my warranty. Make sure everything is lubed and loosen chain since my bike had a very tight chain when I got it.
Thanks for the info 👍
I am glad that u know machanics
I just bought a used Coleman mini bike ct200u a - May 2018 Model, Does anybody know if it should have JUST a single chain set up?? that's what this one has I bought " Single Chain, it chatters constantly when nailing the gas, so I pull the clutch like I see on youtube to grease it up, stills does it, my sons were looking at it tonight and said the chain looks like its doing something weird on the clutch. I'll get into it some tomorrow. HELP!!! :P
Thanks for the video helped me diagnose my broken jackshaft beating on the same bike I just got.
Nice, I only wish we could have actually heard the noise first.
What's the best drive and driven sprocket combination so I can solve the over slack in the rear chain to my Coleman ct200uex ? No matter how it's tightened back up, it gets loose again. Why not make it do it just stays that way ?
I'm finding out that this causes bearing problems to the driver bearing.
Thanks. Great video.
cheap chain stretch . ir will stop
Excellent video. A high temp grease or white lithium is a good grease to use. Packing a bearing is an art form. I use the palm method myself. These things come from China. On the boat things dry out and I'm sure the grease is nonstandard. Made to fail. Timken or SKF are best. I've found bearings that have no grease at all. Thanks for sharing.
Or use red tacky
I just got some bearings that are chinese made, the "grease" inside smells like melted rubber fishing worms 🤣
@@contraband1543 could be.
Thanks Johnny. Great information. I just bought this exact bike for $100. It was sitting on the side of the road in front of a guys house. It was abused pretty bad and I’ve been working on it the last two days. Any way I can have a conversation with you with some questions? Thanks. Steve
I have a Facebook account under the same name.
Idk if it was factory negligence or what but I swear when I got my minibike after 2 hours the chain to the wheel came off and when I removed the cover I unknowingly noticed there was only one bearing in the rear but had no idea,fast forward to today and it's completely obliterated
My bearing must’ve fallen apart a long time ago wondering why the chain always seemed loose😂
I'm not sure what the hell the problem is with mine. Mine's not a Coleman though. I have a 196cc X-PRO200 Mini Bike which is basically the same thing as the MB200. But it's not like it's an old bike and I've put hundreds of miles on it. I have only had it about a 1/2 a year or so and haven't ridden it a whole lot either and just today when I decided to take it for a little stroll I hear some weird noise coming from somewhere in or around the engine. Sounded like it might be where the pull start wheel is. Made what sounded like a rubbing sound almost but louder. I am not a mechanic by any means and have no clue how to pin point the problem. It doesn't make the noise the entire time the engine is running it usually starts making the rubbing noise when I am in the middle of gassing it and then it'll stop making the noise before I can come to a stop to see what it is. Doesn't make the noise when it is stopped only while riding. Meanwhile I have a Torque Converter and Riser Plate coming to me in the mail and I hope I'm not wasting my time putting those on if the engine itself is having issues running on it's own.
I experienced that failure 12/28/2020 and I used O'reily's wheel bearings part number A-1 it fit perfectly so with this bearing throw away the outer ring that these bearings come with because it wont fit with it on be sure to pack all bearings before installation u put the back bearing on first put the shaft inside make sure every part has grease on shaft install dont worry about hitting the bearings in housing the easiest way I have found was using the nut to tighten all parts however i found it to be very difficult to tighten without putting on the chain and getting a very small screw driver to put through the chain so u can tighten locking nut u must tighten enough to put cotter pin hole it's very difficult but u can do it after a few curse words once chains are on the back tire wheel lock up its suppose to do that start it up give throttle but not to much just enough to turn the chain slowly u should hear a pop when u do you'll notice right away u can move the back tire freely that means ur bearing popped into place take it for a ride until u hear a second pop once u hear the second pop ur bike now has both bearings installed and aligned properly be sure to make any adjustments necessary and check clutch chains, bearings, etc.
Had the EXACT same thing happen to me today. That bearing just blew up after about 10 minutes of riding. Gotta be a defect.
Thank you sir,, mine just did the same,,
My theory they sell them thinking most people will mod them up. Clutch and shaft are pointless imo. I Spend extra 80 on torque convt. 100 on Mikuni carb I’m 6’3 275 and mine does 68 wot. But some think they shouldn’t have touch after they buy
@@livefast9865 68 is rollin!
@@sidewayzmike meant 58 and that’s down hill lol
Rode mine about ten minutes. And blew that bearing out
I used a speedometer app and I’ve got like 300 miles on mine it’s broke down a lot of times I fixed a lot of shit I have a 2019 Coleman CTU 200 is the black digital one
How did you get the 15/16 nut off the shaft?
Big pair of channel locks holding the sprocket.
Thank you
I appreciate knowing what's inside these. About to tear into mine ... the jackshaft won't spin the main chain sprocket. So maybe the woodruff key is gone? I'll know shortly. But I'll also order a torque converter now; dealing with this, and then the secondary chain that needs occasional oil? No thanks.
Yep, the woodruff key disintegrated. And the axle slot it fits in is rounded out on one side ... not the backside as you might expect from applied power, but the front side. My guess is that the woodruff key was allowed to wiggle around in there until it got twisted and began to shear.
I could fix it with a different jackshaft, but seriously, why bother? Off to research torque converter setups now.
@@thenexthobby The torque converter is the way to go on these bikes. You get better low end and higher top speed and don't really have to do much to the engine.
I bought a mini bike and the jackshaft threads were messed up so I can't put a nut so it could hold the two sprocket
Same problem here. Don't have 3-4 hours on it.
I got a question I got a 2016 Coleman n my chain is loose for my clutch how can I tightnen it I got to chains
There should be a chain tensioner in there.Is it missing?
@@JohnnyMullet no sir every right it’s just my clutch chain loose
@@treychurn4722 might have to remove a link from the chain.
The wheel bearings are the same way. You will want a torque converter. Completely different bike with one.
Tcv? Or pcv?
TCV
Same happened to my bike
How do I remove the 15/16th it just spins
Large channel lock pliers.
@@JohnnyMullet won’t damage the sprocket?
@@RageCityBiscuit nope
@@JohnnyMullet thank you sir.
6203-2rs-c3 try those
Bro put a predator on it. That’s what I did and the only thing I needed what’s a 3/4 10 tooth clutch
Do you think the Chinese really cares about quality?😅.
Take jack shaft throw in the trash..install new chain