Ducati 1098 Starter (Sprag) Clutch Repair
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- Опубліковано 25 лип 2015
- In this video, we explain the process of changing a starter clutch (sometimes called a Sprag or Tapered Roller Clutch) in a Ducati 1098. We also explain how it works and why they eventually fail.
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7 years later & you’re STILL a life saver mate! Absolutely brilliant “accidental” how to! This darn thing has been driving me maddd for months!!😅
Thanks a bunch & Cheers!🍻
This was EXTREMELY WELL detailed and easy to Follow. this was the exact problem with my 1098. fixed myself saved hundreds on labor charges (5stars)
where you buy parts and how much?
@@folerxyou end up finding out where ?
i stumbled upon this video by accident but couldn't stopped watching it because it was insanely informative and in depth. thanks for accidentally catching my attention!!
I cannot tell you how grateful I am to you for uploading this. Thank you very much. excellent walkthrough. 10/10.
Great job making this video and giving specific details on repair of sprag clutch. Thank you!
Thanks for the afternoon sprag clutch lesson. Excellent made video.
Even years later you helped someone today -) I kinda had the general idea but your very good video gives me the confidence to tackle the job on my 2003 Monster 1000 DS
Thank you for uploading !!!
Thanks, Mate. I appreciate your positivity 🙏 And thanks for taking the time to comment 👍
Thanks for a very helpful video. On mine, a St4 s, the boss looked like the new one, without the extra holes. It was quite impossible to rotate it. I put the bolts in and tapped on them with a hammer (gently!). That did the trick!
You're building our confidence, and great at explaining things. Thanks!
You are very welcome, thanks for the positivity 👍
Excellent example and training video. Thanks.
Thank you for the explanation of the sparg clutch!
I'm from the dark side and have a Tuono with sometimes a non-starting issue, where it appears to be battery BUT it's connected to a loud rumble noise (similar to main bearings havings LOTS of play) - which I suspect is sprag clutch issue. I think it's dragging so much power the small battery can't cope and gives up. I can leave it for days and press the start button and it happily fires right up!
The noise it meakes I could only describe as a ratchet type roar - when stationary it sounds like big ends have gone - but riding it - sounds like a raw air/induction noise.
All very odd but I'm fairly sure it's sprag clutch related.
THANKS BUDDY I ALREDY REPLACE THE SPRAG ON MY S4R REALLY THANKS ALOOOOOOT FOR THE VIDEO,HOPE UR STILL RIDING SAFE
Thanks !! Really great video ! easy and clean to do!!!
Im putting a 1098 Flywheel onto my Mutlistrada, and using your video for help. Thank you so much!!
Fantastic video thanks. I am an amateur home/hobbyist mechanic I have just finished installing a replacement crank into a GSX-R600 SRAD engine. I was wondering how the starter clutch worked. I always get excited when I you have posted a new video, I always end up learning something... Cheers mate!
SUPER helpful video, thanks much for sharing this with us. I have a 2007 1098 with hard/long start symptoms similar to your video bike. This video gives me confidence to tackle the job myself. Again, thanks so much for the clear, concise, helpful video!
Your positivity goes a long way to inspire me to make more, thank you :)
As I've recently found your channel I've been working through all your videos. Some great stuff here. Makes a change to watch someone that knows what they are doing, not like a lot of 'how to's' on you tube. Just watched some guy in America doing same job on a 999 Duke. He wedged the alternator rotor with a bolt to undo it and the same again to do it up using the small shaft of the cam belt drive gear to lock it all in place. Concerns me that some people watching might do the same. Keep your videos coming, I'm hooked!
Thanks Mate 😊
Good on you for posting this video. Brilliant.
Great Vid. I have one to do for a mate of mine. This has just mate life so much easier. Lap top in the garage time. Nice one.
Your videos are massively, massively (did I mention massively?) informative. - new 1098 owner
Very good informative video, I don't even have a Ducati, more I know what a sprag clutch does now. Thanks
Brilliant video!! really gives me the confidence to do this myself now. Any ideas on the torque setting for the main clutch bolt?
Awesome tutorial, thank you.....not confident enough to do my own on my speedmaster but was tempted after your vid.;-)
Great vid as always! Have replaced one of these on a Nitro RC truck before, although it was all one piece and very tiny. Same principle though, and I never quite understood how the rollers actually locked up the one way, so thanks for explaining! Lovely bike as well, I do like the sound of those dry clutches :)
Had this happen on my `09 1098 R - backfiring due to fouled plugs led to the whole starter clutch failing, I had the work done, my mechanic has a lot of experience and it was starting and running well after the new clutch and plugs were fitted..
Brilliant video
Excellent vid extremely helpful thanks
thank you for your help very informative
Great video, thank you!
I can't get my boss to rotate around, and believe me I have tried, it looks like the new one you are installing.
Very interesting vid, I think Suzuki are using a similar system now with the press once starters on their higher end bikes.
Awsome tutorial to that common problem, thanks
Thank you for this very informational video. The best one I could find so far. I will be attempting this on my 2008 hypermotard 1100 I'm hoping it's the same, after looking at the exploded view of the flywheel setup I believe it's nearly identical. I'm just having trouble finding somewhere to buy the parts besides ebay
Great video!
Amazing job.. simple explanation for dummys
great vid helped me out alot thx!
Great video. So we’ll explained !
Great video very informative I wish you live here in New York I would have you do it for me
Thank you so much buddy
thanks very good explanation
I love the video is a very good explanation I already have a better idea to do it at home but I would like to make sure that that is the problem
Good on ya mate thx for the vid
Nice job
Thank you
Nice job....👏👏👏👏
Great that you're continuing making bike repair videos. :-)
Love it. Do the same but in German language.
Thanks James. I learned a lot from you before I started myself :-)
Thanks James. Mega interesting video as always. :-)
Great video, thanks for posting it! Try to use the GoPro camera on the next one, so you can have your hands free while filming.
Excellent video. The only thing I would add is the size of the flywheel nut, you mention all the other tool sizes. Also interesting to note, you don't use a flywheel securing tool (Ducati p/n 88713.3367 for the 1200 Multistrada I am working on), just a windy gun.
I use both!! Always use an air gun, it hammers it off slowly & safely.
Looks like this is my next job - cheers for the vid!
Any thoughts on lightened fly wheels ?
New video! Yaay!
And its a beutiful ducati :)
Nice bench.
This is a great video!! I'm performing the same operation on my 749 as well as replacing the starter motor with fat wiring. However, I'm stuck on the separating the clutch from the piece it sits in. I tried using a hammer and screwdriver and cant move that clutch even a little bit. Will using a drift make any difference?
Thanks for this wonderful educational video, i have just a small stupid question since i have a RSV Mille Aprilia and someone tolds me its the same process, before you use the pressure tire pistol to unscrew the main bolt, how do you fix the wheel ? you have to put a gear or you hold it on the other side? Many thanks
Im really appreciate for you 🤍🤍
Thanks Jim. When using your impact to remove the nut, does it matters if the force turns the cam belt shaft drive? I see in this video turns a bit like 90 degrees but when I use my impact it turned like 180 degrees until I got the nut off... did you use the penny to lock the flywheel and torque it to spec? 😁
Brilliant video. Can I ask, would/ could a failing sprag clutch be the cause of metal filings in my engine?
Great video. Do you know the correct torque for tightening the central nut?
thanks mate great video also what those t25 bolts get torque down to? and should use medium strength or high strength lock tight?
THANKS!!! i have this problem in my 2000's aprilia falco and i couldn't understand how this piece works. Do you know if it's posible to this piece to sound while the bike is runnig too? i heard the same noise while i was in a trafic light in neutral. Onece again, thank you so much!
excellent video BUT a couple of questions, do you need to take note of the position of any of the parts in relation to one another, like flywheel to crank, or can it only go back together in the correct position for balance or timing marks or anything like that. secondly do you need to lock the engine in position either with the bike in gear relying on compression or with a special tool to hold the crank in position when removing and when replacing the big nut and torquing it back up? lastly where is the best place in the UK to buy the sprag clutch and roughly what should it cost, you mentioned the 80 or so quid for the other part, but what about the price of the gear that wears and the clutch itself? thanks.
How did you tighten the flywheel bolt? Torque wrench? Air impact?
Hi,
Can be the starter motor taken out without removing the left engine case? 1198sp.
Hello Sir, My Ducati Hypermotard 2008 1100cc got a problem too. so i have to open my left side engine cover for make sure ?
Thanks for the vid. ANy chance you could share how to pull the flywheel?
You don't need a puller, it's on a spline and just slides off. I did mention this @ 13:10
What's the reinstallation process? Torque and as someone else previously asked, how do I lock the flywheel in place in order to torque it properly?
How did you tighten up the fly wheel? Using your impact tool?
Owning Kawasaki for 10 years zx9 40k miles, 06 10r 70k miles and 2011 zx10r 30k miles. Never had an issue other than Stator and starter by mitsuba which only the glue fails. 1098 comes in the fam and what an amazing machine. It's a speed machine it's so focused smooth and sounds like racing porn how ever, the fuse box connection on and off causes no crank no start and then this which only Italians manage to shove you one. Anyhow I love the brand just as 2nd bike, mistress. And that built is so complicated but all that leads for the speed machine she is. They say the beautiful ones are the difficult ones lol thanks for this gotta change this
do you have a link for the the clutch cover remover tool?
James I've stripped everything down managed to remove the bolts from the flywheel bit can't get the piece that holds the sprag clutch out. I've tried moving it around with a drift as you explained but it simply won't budge. Am I missing something? Is there a tool to do this?
Just picked up a 996s. Hit the start button and spins freely. Same procedure and parts? Thanks.
How did you get the 8, T25 bolts out? I’m having a hell of a time with those!! I’ve already snapped five T25 sockets
Hi mate, do you happen to know if the 'reduction gear' should have any play in it? Mine moves on the shaft towards me and in towards the bike itself. Unsure if its supposes to have zero play in or is supposed to have play on the shaft. Thank you.
Dan
Thank you for making this video, very detailed! How did you remove the flywheel nut without using a flywheel tool please?
Did you not see him zip it off with an impact? Need a flywheel lock tool to retorque it though
@@doofwop I did, I thought maybe he must have lodged something somewhere. Figured this out eventually and job done. Yes you'll be needing a flywheel lock tool to re-torque it and would consider changing the flywheel nut.
first want i want to complement your videos very detailed, and help people like me that are a (do it yourself) person .with that being said ..now i need help and cant have it without a lot of money ...I have a 2007 1098 that is making a knocking sound ..still turns on but going from 2 gear and bringing it down to 1st gear it turns off ..then on display shows " service " have that happened to you
I got the same problem on my Aprilia RSV1000R Gen 2
Where can I get that tool to remove the cover? Thanks.
So after sprag replacement my bike isn’t starting, it’s got fuel and spark and cranks fine now but it just won’t fire,
What's the torque on the T25 bolts?
Good Day, Sir.
at 18:50 , the 6mm bolt you are referring to, does it refer to the size of the hex or where you referring to the diameter of the bolt? If you were referring to the hex size as 6mm, does it mean the bolt is an m8? Or did you mean to say that the bolt that was used is an m6?
My airplane uses this style of starter and I'm having the exact same problem, luckily the clutch is built into the starter and all I have to do is pull it off, and put in a new one.... unluckily a new one costs 700 dollars.
2007 1098. Should I buy one
Thanks for the very helpful video. I do have one question though. I know the flywheel nut will come off with an air gun without holding the clutch, but when you are tightening the nut to the proper specification, do you need to hold the clutch then? Also do you happen to know what the proper thread locker is? My manual just says to use the proper thread locker. Thank you once again.
Shane Fran
Yeah, what is an air gun tighting torque for the nut?
What is the size of knot pls..
Thanks for the amazing video. I have a 2006 ducati 999s and i have the same problem, starter is turning but engine is not cranking, most likely it is sprag clutch. My question is that do i need to hold the clutch on the other side of the bike while opening the crankshaft nut with air gun? Thanks
I mean the flywheel nut*
+James Wright-Roberts thank you so much
Did you get the answer I’m having the same problem
Hello James . Good question what is your located I want you do my bike I have the seme problem in my 09 Ducati 1198 ?
What part numbers are those. Particularly the Driven gear? 😁
Would I also not need a flywheel puller for an 2008 848?
From what i understand, having owned 2 Ducatis, low battery voltage can excaserbate the problem.
Thanks so much a video help me a lot
Hi want this starter clutch and flywheel for Ducati Diavel 2016 model can you send me the link
as I'm sure that's the problem I have a ducati st2 2001 when I try to turn it on it goes blank I only see the magneto spinning
BMW does not have a car type starter motor. It has pretty much the same system as this.
There are generally two types of starting systems "pre-engaged" type starters and "Sprag Clutch" type. Motorcycles generally use the "Sprag Clutch" type design. The only real exception being BMW who use the "pre-engaged" system on most of there Boxer Engines, including the R45,50,55,60,65,70,80,90,100 and also R850,1100,1150,1200C, R1200GS,RT,R,ST,S. I could probably go on. So as I said - BMW use a different design to this Ducati. The only exception being the Inline BMW engines that copy the traditional Jap design and use the "Sprag Design"
Superbike Surgery Ltd
Cool. Didn’t realize the r’s used a different design. I have two k’s this is only why I questioned it. :)
I did this but now I have no oil pressure any idea what could be going on
Jim, I have noticed that some of the special tools you use are blue analysed, are they made be Motion Pro?
Can't remember what make they are, think they're 'Lazer"
Thanks for coming back Jim. They look like a decent tool, because of the colour they look like Motion Pro.
Same exact method they use to start nitro rc cars
In my country(IRAN) This part name is Starter Gear Clutch.
Having a SUPER hard time rotating the sprag boss/flange inside the flywheel to remove it. It's not budging. Would appreciate any further tips. Parts on bench as we speak! :-)
You'll probably have to hit it harder than you think. Do you have it in a vice to hold it still?
@@SuperbikeSurgeryTV Thank you for the prompt reply! Are you saying to secure the flywheel in a vice somehow? I wonder if there's a tool that secures to the two opposing holes on the outside of the flywheel? That would be ideal. The other thing that the factory could have done, would have been to give us a few threaded holes only on the boss/flange that would allow the screw out, without having to rotate it! Thank you sir, I'll attempt to vise the flywheel---just don't want to mar or damage it! Greg in Austin TX USA
I figured it out! Much easier than rotating the flange slightly (which I could never achieve!):
Simply screw in 2 M6-1.00 screws into the flange, opposite sides. Flip it over on the bench, sit the flywheel on a center spacer to allow the flange to be pushed out. (I used a large Delrin frame slider, fits in center only!) Hold flywheel on one side by hand, insert a medium Phillips screwdriver into the flywheel side, corresponding hole opposite the flange screw(s), and TAP hard with a hammer. The flange will slowly work itself out of the flywheel. Keep switching sides to ensure even ejection. Job done!
@@greggiacona238That's what I came here looking for!
Hey Bro, so I changed the starter clutch, I tried starting with out oil to make sure everything works... Is it that it won't start without oil... The starter just keeps spinning.
Do you have the clutch rollers in the wrong way around?
@@SuperbikeSurgeryTV I don't think do the beads are all in the same direction as the older one
Did you not have to use the specialty tool to take the crank shaft nut off
I know my Speed Triple will need one of these eventually, just hope I don't still own it when it does! Triumph ask £350 for the service kit (the clutch and gear), robbing bastards!
One theory on premature wear is when the battery loses its cranking efficiency, the starter spins slower leading to the sprag not gripping hard enough allowing slip and eventual wear. Given Triumph fit chocolate stators and papier-mâché reg/recs it's only a matter of time!
Noticed you changed the battery with a 12B-BS versus the original 14B-BS / Reasons?
My Honda has starting issues, sometimes it starts on button and other times it needs to be bump started. On the button can hear the starter motor going but nothing from engine. Could the starter clutch be at fault?
If the starter is definitely spinning and the engine not turning it's almost definitely the sprag clutch.
@@SuperbikeSurgeryTV Thanks, it's intermittent, if I have to bump it will start on button when warm. I assume that would be thermal expassion clearing the wear allowing it to grab. My bike is the hornet 600, I watched your vids when you worked on that bike.
This part price please my bike 848 evo