How To: Kawasaki Ninja 250 Chain Adjustment

Рет қаралды 68,774

7 жыл бұрын

www.DaveMossTuning.com
A Kawasaki Ninja 250 arrived for a school day at the track with a slack chain. Can't be too tight, can't be too loose. There's truth in that Goldilocks fairy tale, it needs to be just right. That's why god gave us adjusters. These on the Ninja 250 are typical for a modestly powered bike.
www.DaveMossTuning.com

Пікірлер: 64

@freemarketjoe9869 3 жыл бұрын

Great watching an actual mechanic do it right. No just rushing it. Tedious but done right. Why it’s so nice finding a shop that does things you can trust are well done.

@Mprikiman 6 жыл бұрын

That's it I'm subsribing! Short, simple, detailed and easy to understand! Keep up the good work Dave!

@Mattschindig 6 жыл бұрын

If you have watched other videos of Dave Moss Tuning you will see that he goes over everything very well. He did look like he was rushing so the rider could get back on the track. Could have been a hot day and we always forget some stuff every once in a while. So don't hate the video. Everything that he didn't mention has been answered in the comments.

@jubjub9823 7 жыл бұрын

can you clarify why you use a screwdriver between the sprocket and chain when tightening the axle? thanks

@catalystreactionsbw 7 жыл бұрын

That makes sure that the axle is pushed up tight against the adjusting screws so you tighten the axle perfectly straight. You can also use a rag etc to do the same thing.

@scottcampbell2430 7 жыл бұрын

Mudux, I believe that the only slicks that fit these rims are the Moto3 fitment. I have been curious how they affect geometry and Dave Moss may be the guy to tell us. :)

@catalystreactionsbw 7 жыл бұрын

Geometry is affected by circumference, so you measure the old tires (inflated) and then the new tires (inflated) and see what the pitch difference is with the chassis:- nose forward, rear biased, general lift up, general lowering. That will guide you to the changes that need to be made.

@Ric0chetAus 7 жыл бұрын

Was there a crack in the rear swing arm back there???? Looks like a small weld job

@vectrexer 6 жыл бұрын

Once Again... Thanks!

@vectrexer 7 жыл бұрын

Thanks!

@ivanpadilla9875 6 жыл бұрын

How can you tell if the chain is too loose or too tight? Great video by the way!

@catalystreactionsbw 6 жыл бұрын

Find the tight spot and see if you can just touch the plastic chain guide without moving the top of the chain upward. Check side yaw under the swing arm and see if you can pull the chain partly off the rear sprocket.

@jyotiprakashsingh9222 4 жыл бұрын

You're very best teacher and u know about very deep knowledge in bike few people know about and they don't tell about everyone in free so u and ur work great.most superbiker don't know any knowledge 🙏🏻👌🏻👍

@TheNightrock 7 жыл бұрын

my kawasaki 250 chain always loosens, even when i tighten it. for one to two days its fine then it gets loose agian, and one day while i was riding it came off and it got strungled up in the front sproket and got broken, but thank i was driving slowly when that happend. so what am i doing wrong? is the two nuts on each side wrong to use?

@catalystreactionsbw 7 жыл бұрын

What you are doing seems to be right but the chain is very small and stretches quickly especially if you ride the bike hard. Are you matching the chain tension I show in the video and if so, it should not come off the sprocket. ? If you are, then it is time to replace the chain as it keeps stretching.

@jesuscastro6038 4 жыл бұрын

so how do you keep the wheel aligned when you have to re tighten the chain after you change out the front sprocket?

@catalystreactionsbw 4 жыл бұрын

You measure with a precision device to make sure it is straight. Once correct, make a paint pen mark to know where your starting point is, then you simply count hex bolt faces faces as the chain is adjusted.

@bwes2250 3 жыл бұрын

Good job 👍👌👏💯

@catalystreactionsbw 3 жыл бұрын

Thank you! Cheers!

@kirkford8972 3 жыл бұрын

Hi dave great video!... does it also pertain to my 03 - 250? I also have one more question theres piece of semi hard rubber that the top of my chain rests on and I've seen plenty of other vids of my style 250 ninja and I've never seen this rubber piece. Is this normal? I'm thinking the chain is loose ive put 430 miles on her since October and have had no issues with the chain so far other than it looking suspect lol

@catalystreactionsbw 3 жыл бұрын

Hi Kirk. Yes it does - so just take a look but do not be too analytical. The part you are referring to is th chain guide. Every motorcycle has one on the top and bottom of the swingarm so the chain does not cut through the metal!

@kirkford8972 3 жыл бұрын

@@catalystreactionsbw awesome dave thank you for the quick and very helpful response!

@Snapshots2323 4 жыл бұрын

I have a ninja 250r wanted to know if a 14 39 sprocket and a 520 chain would work fine

@catalystreactionsbw 4 жыл бұрын

Depends on your track and lap times. 520 chain will work fine as will the 14 front. Rear sprocket choice is subjective as mentioned. Critical part is rear axle location.

@grimreaper5295 6 жыл бұрын

I can't find the same model as mine anywhere 😑

@spotthedogg 7 жыл бұрын

Would be beneficial to mention wheel alignment here also

@catalystreactionsbw 7 жыл бұрын

Good point........

@nichilasnilas2402 3 жыл бұрын

Is there any cons of having a too tight chain and a too loose chain?

@catalystreactionsbw 3 жыл бұрын

Too tight and you stress the case bearing on the output shaft. That can require new cases as the bearing ovals them out. To loose and on downshift the tsunami in the chain causes it to come off.

@TRUpachucos 4 жыл бұрын

So you guys dont use tensioner gauges to check tension???

@catalystreactionsbw 4 жыл бұрын

I do not as chains stretch and wear unevenly, so I assess each chain as I work on it and listen to the way the rider describes their use of the motorcycle. I am also leveraging several decades of knowledge.

@loganberry7754 6 жыл бұрын

What size are both rear axle nuts

@gp8721 Жыл бұрын

On my 2009 ninja 250R the left side nut is 15/16” socket

@loganberry7754 Жыл бұрын

@@gp8721 thank you

@cptforce4541 3 жыл бұрын

May I know why he put screwdriver between the sprocket and chain when tighten up the tyres?

@catalystreactionsbw 3 жыл бұрын

The screwdriver or rag forces the axle blocks against the adjusters so the axle is tightened straight and there is no air gap between blocks and adjusters.

@cptforce4541 3 жыл бұрын

@@catalystreactionsbw Thank you very much sir

@xxnewheroxxofficial4989 5 жыл бұрын

what size is that castle nut?

@NathanLandman Жыл бұрын

I know for 2009 - 17 mm bolt head (left side of the bike), 24 mm castle nut (right side of bike). Torqued to 72 ft lbs, New cotter pin as needed.

@jedr.3494 6 жыл бұрын

Is it important to spin the tire to check in various areas of the chain when adjusting slack?

@catalystreactionsbw 6 жыл бұрын

It is, so you can find the or more than 1 tight spot in the chain. You can also see when links are seized as the chain will "tighten" as it rolls around the sprocket.

@soliddiesel7 4 жыл бұрын

What about the chain slack mentioned in manual?

@catalystreactionsbw 4 жыл бұрын

You can do that measurement if you feel that is the right thing for you and your bike.

@soliddiesel7 4 жыл бұрын

@@catalystreactionsbw Hi Dave, Thanks for answering my question, another thing I wondered that when the rider sits on the bike the slack is removed and the chain gets tight, so should the chain adjustment account for rider weight or something like that.

@catalystreactionsbw 4 жыл бұрын

@@soliddiesel7 when the bike is loaded with you, you/passenger, there should be a small amount of free play present 5mm or so

@begoodjohnny1866 9 ай бұрын

What tools are required for this job?

@catalystreactionsbw 9 ай бұрын

Sockets for the rear axle (17mm and 22mm I believe), 12mm wrench/spanner for the chain adjuster, rag or screwdriver to put between the chain and sprocket when tightening.

@cantarashop6454 10 ай бұрын

6years ago,what camera did you use sir?

@catalystreactionsbw 10 ай бұрын

Mr. Williams the videographer will reply. I cannot answer your question.

@catalystreactionsbw 9 ай бұрын

Dave Williams, editor, replying here. It was a Panasonic camcorder of some kind, about $900 at the time. I can't remember the model. I don't have it anymore. Bought it in January 2017.

@tombartram7384 3 жыл бұрын

Don't use an 18 inch breaker bar or you'll over tighten the 22mm nut.

@vincentvrai 3 жыл бұрын

Where’s your accent from?

@catalystreactionsbw 3 жыл бұрын

Manchester in the UK. I left there in 1987.

@bens6865 Жыл бұрын

What does he mean one face?

@catalystreactionsbw Жыл бұрын

A square has four faces, a hexagon has six. You can count faces and add then up.

@bens6865 Жыл бұрын

@@catalystreactionsbw thank you for the reply!!!!!!!!

@Mudux 7 жыл бұрын

Is that a 120/60 tire? What's the reasoning for using it?

@catalystreactionsbw 7 жыл бұрын

There are various combinations between 120/140 to 110/120 and it depends on what the tire manufacturer provides.

@stinkerdoodle1737 7 жыл бұрын

Mudux (tire size) it a Ninja 250 so it doesn't take a large tire and it may be the size that is available in a slick for that bike.

@catalystreactionsbw 7 жыл бұрын

correct - Dunlop ad Bridgestone offer slicks.

@franciscomiranda9561 7 жыл бұрын

But the Original Size of the Ninja 250r is 130/70/17!! Wy Beeing that a Race Bike as a "Smaller" Tyre?!!! Sorry My English, i'm Portuguese!!

@mavricxx 6 жыл бұрын

I'm sure this guy is experienced but he didn't go over the proper way to check the bikes chain measurement and didn't go over the wheel alignment using the notches on the nut. Not very impressed by this guy. With many novice like myself here, this is the wrong way of doing a how to video. MC Garage is way better than this!

@catalystreactionsbw 6 жыл бұрын

Thanks for your salient input. There are many videos on chain alignment and free play in this channel. We don't repeat ourselves in every video and perhaps there is a lesson here that we need to. Yes, I have experience that you can assess in other videos in this channel.

@Daniel-tj6mc 6 жыл бұрын

Then go back to mc garage. Pretty boy ari can hold your hand on how to clean your chain.