C90 Camchain Tensioner - how it works

Short Vid on the C90 camchain tensioner system

[@sajid390390]

Thanks a lot for such a helpful video. You explained really well. The special tip of refilling the oil actually resolved my problem. Great Tip.

[@jasonrobson676]

Thank you for this video! I was missing pulling the 10mm bolt and priming. Thank you so much.

[@bulltronicsofficial5464]

Thank you mate, very helpful video. Of course with first oil change I removed tensioner and total paniced. :)

[@michaelbennett9738]

Putting oil in there is a very good piece of info! Good video sir!

[@andyp5091]

Great job buddy on explaining the draining the wrong way ... i am one of those new owners who did it. i was looking online everywhere and you save the day, - thank you!!

[@bulpinbros]

Thanks for that. Dropped mine out, didn't realise the oil was meant to be in there too, the chain rattled well bad. Now I'll put the oil back in.

[@YrrahRussell]

Thank you very much, I literally accidently opened up the wrong one and freaked out You put me to ease

[@TheAnigai]

Very valuable bit of info there, really seems like something too easily overlooked. Thanks to you I won't be making that mistake when I drive a c90 from Ireland to Japan. Cheers.

[@hank1556]

did you actually do that?

[@grumpybaxter]

Thank You - great video

[@Nismo65]

when priming that hole why wouldn't you just lay the bike over at an angel to get more in there then put the bolt back in before you stand it up straight.

[@Destide]

This is a godsend thankyou for making it

[@rogfromthegarage8158]

Awesome explanation.

[@wazza6262]

this really helps. thanks man!

[@botetiinvestments4019]

Excellent! Well explained. Thank you

[@dominiccannistra]

out of interest, if you don't mind indulging me, what would happen if you turn the clutch clockwise and jam the chain in there with some force, i turned counter and it came out and free'd up fine but could anything have gotten damaged inside? thanks in advance

[@jonathanmellish4439]

Very useful. Thanks. I was going to undo that nut before I watched your video. Now I am glad I didn’t. Better to take the side cover off to have a look. Presumably I don’t have to drain the oil from the engine to do inspect the chain ?

[@sparkesgnr]

Regards of the rubber end being up, does it matter in which position those holes in the shaft are placed . Or it doesn’t make a difference

[@madnotbad44]

Very interesting . Thanks 😊

[@joshtomlin6288]

Excellent video

[@randychan4609]

Your video saved me, after putting back the tensioner (without squirting the oil in) i had my bike running for less than a minute trying to figure out where does the clanking sound coming from. Does it hurt the engine? After i followed ur instruction the sound went away

[@dbloq187]

I accidentally removed that bung and out came there spring and rod. What is the reinstallation process? Does it matter which way this goes back in?

[@SuperButterbunz]

Mine came out with the spring (Honda grom), I put it back in but now it has a small tic, idk what to do

[@ksardakhla6671]

شكرا استفدت منك كثيرا.

[@mountfields]

Hello, Is the Honda atc 110 engine the same ?? Thanks....

[@PimHoffmann1988]

Thank you so much. This video saved my bacon. I deleted the E-start and got myself in a pickle.

[@jeanmeacheletienne2394]

What's happens if u don't have the plunger

[@rw1062]

Where do I get a replacement spring

[@mdsoto3893]

Thank you

[@shahrulhishammohammed4546]

Thanks for the vid, now I knew🤦

[@chamjiskykhan8252]

Amazing video and explanation. So clear. I have a question my can chain is loose due to which I m getting that tak tak or clicking or knocking sound. Is there a anything that I can do with that tensioner to probably reduce the free play? And can one replace that big black sprocket in the bottom below the chain? My cam chain gets loose after 3-5k kms on a daily commuter bike.

[@DaveSluggy]

If the tensioner is working properly - check the ball valve in the plunger is free and rattles when you shake it. The best fix will be to replace the cam chain itself. You can replace the lower sprocket - it's not easy as this is the oil pump drive and it's screwed onto the shaft so you will have to remove the clutch and oil pump from the opposite side of the engine.

[@chamjiskykhan8252]

DaveSluggy thanks for the quick response. I replaced the cam chain and the cam noises are gone. Now there is some other sound that's most likely the bearing sound..as there was no vertical play in con rod big/small end.

[@janpiezgarces9407]

I

[@danielcosta2762]

Hi there I have a question, when you remove the spring will the metal ball fall out? I want to change the oil on my 110cc and I thought that it was the oil drain and the spring shot out, and I didn't notice if the ball shot out as well! I put it all back together with the pieces I had but no ball because I couldn't find it, I'm worried it might damage the engine

[@DaveSluggy]

Hi - Not a problem your motor will be fine - the ball valve is within the plunger part and won't fall out on it's own.

[@cante199]

@@DaveSluggy Hey Dave! thank you fro tutorial! i have a question. in my pitbike 110 i have opened the bolt of the retainer but NOTHING COME OUT! the engine seems run good, no particular noises. But im sure there is not a spring inside the engine carter. Would it run good only with the metallic cilinder and the oil pressure, without the spring?? thanks mate

[@dyiex5483]

Can I ask what happened if you put spring first I did it on my own engine but can't find the spring?

[@DaveSluggy]

in that case the spring maybe jammed inside the housing - time to open the casings and check

[@diesel5355]

I acquired a CT90 but it is missing the bolt located in the middle of the cylinder. you can easily see it in the beginning of this video. what is that bolt for?

[@baileythesleepless9966]

This engine is not a CT90 engine, it's a C90 engine. However, both have that bolt in the cylinder and that bolt holds a guide wheel for the cam chain in place. If there's no bolt there then either you don't have that wheel or it is stuck in the engine somewhere so be careful.

[@DaveSluggy]

It holds the 'rubber wheel' cam chain guide roller in place.

[@twizzlestickx7]

you only need to take stator off to change chain

[@denoc817]

I made the same mistake other did. drian it out oil on the chain cam tensioner. When the oil started to come out it was way more then 1cc recommended. it came out in ounces of fluid. Btw, I inherited the bike. What replacement oil should I put back in?

[@dirtbiked8846]

Legend

[@andrewclark5991]

It's the middle of the night so I won't try this technique just yet for the sake of my neighbors...But I did the same rookie mistake and ever since I put it back together, the bike is extremely hard to start and when it does start, it is really slow. If I prime the tensioner will it take care of that problem?

[@DaveSluggy]

+Rico Suave Unlikely, more probably the cam chain has jumped a tooth on the sprocket so check the cam timing before doing anything else, if it's more than one tooth out then it will have bent one of the valves and your going to need to strip the top end down.

[@andrewclark5991]

+DaveSluggy Darn I just checked it and it looks like my timing is in spec. I Googled and it looks like I am supposed to be at 9 o'clock on the sprocket. Im actually at 3 oclock, and there is a T mark on my fly wheel that is supposed to line up. I don't know what else it could be. it will start up cold, but not warm and will usually die pretty quick and has no mid range. when I reinstalled the spring I ended up cutting some of it off because I had initially installed it wrong and bent it pretty bad. It doesn't seem like that is the issue though.

[@Ren-fs2qx]

I have the same type of tensioner, can I remove and change the tensioner spring without removing the crank cover?

[@DaveSluggy]

Certainly, the spring will drop out of you remove the securing bolt underneath, although it's unlikely the spring will b the cause of your problem.

[@Ren-fs2qx]

DaveSluggy I've tried to remove the spring and plunger, stretch the spring and put it again but there still tik sound

[@reidspeed77]

Legendary

[@robertkjotar1877]

At 3:00, are you sure that hole is for filling? Because what i've read the tensioner gets oil from the oil you fill in your machine. Because if you fill it like that in the little whole the tensioner will tension the chain too much and it will sooner or later brake. (The chain)

[@DaveSluggy]

Robert Kjötar The Honda manual states to add 1cc of oil through this hole on assembly. Originally this was the locking bolt for the manual cam chain tensioner system; the plunger had a ramp on the side that was pushed upwards by a spring and then locked into place by a cross bolt.

[@robertkjotar1877]

DaveSluggy Hmm, okay. But 1cc? 1cc=1ml right. When i filled it i filled it until it started coming out oil like you said on the video. Wouldn't that be too much then?

[@DaveSluggy]

Robert Kjötar You can't really over-fill it; the excess will run out of the opposite hole into the casings.

[@robertkjotar1877]

DaveSluggy Hmm okay, because i've had a problem with my Honda Z50J (same engine type as C90) the cam chain would jump teeth. So the piston would start hitting the valves. But it stopped after i filled that hole on the video but that means that the oil pump isn't working properly? The tensioner didn't have enough oil pressure to tension the chain seems like. But why i asked about over-filling it was because it started running slowly and felt like it have lost power and i though that maybe was because the chain is too tensioned. Thanks for the replies!

[@Mukeshmiktecrep]

Filling it with oil is a must thing to do, because the air in the tensioner stops the oil from entering down the tensioner piston and ball valve on the first few starts and cam chain may skip some tooth.

[@wapalumegas7184]

hi sir how's to change the spring in the camchain tensioner to my 110cc motorcycle

[@DaveSluggy]

If it's the same type of tensioner as the one shown in the video then it will be a easy to remove using the bottom plug bolt, undo this and the spring and plunger will fall out allowing it to be easily replaced and refitted.

[@zazx560]

@@DaveSluggy kinda stupid question but when you say oil is it the motor oil? or do i need a special type of oil?

[@Khabirov88]

I actually didnt replace the oil that fell off. The motor clanked badly till the clanking went away on its own. I thought i did'nt positioned the tensioner right thats why it wasmaking noise but still i feel that the engine sound doesnt appear to be neat as it was before. Is it because of the tensioner or just my mind playing tricks on me? I also feel a loss in power... is it the tensioner the culprit?

[@DaveSluggy]

Sounds like you may have the cam timing incorrect, it could have jumped a tooth when it was loose.

[@Khabirov88]

@@DaveSluggy aieee.. thats bad news.. do you have a video about how to adjust the timing correctly? Thx for the reply mate. I appreciate.

[@DaveSluggy]

Khabirov K , I don’t but there are many other people on KZbin that have

[@Khabirov88]

@@DaveSluggy one last question. To increase power and speed, how much teeth should the front sprocket be?

[@mopedman8220]

is it possible for the rubber tip to not come of out the engine?

[@mopedman8220]

ohh yes it is. what a mess i got myself into

[@motojormac42]

aalis ko yan buti tama pag kabalik ko .

[@ansdrifter]

Thank you for the great video. Please support me since in my old machine there is not also spring. Maybe someone remove it its missing or its normal??? Machine was stuck for years i just renovate it

[@DaveSluggy]

As far as I know all Honda motors of this type have springs, both the manual adjust types and the automatic version shown in this video

[@Lexfold]

I love you....

[@ameirabbden5290]

Ur using a wrong timing chain..try the c70 chain..

[@dannyblack8704]

Thank you