A forum for owners of Yamaha TTR250 trail and enduro bikes!

One1 · Veteran Member

Started having this issue today

mossproof · Super Guru

Sounds like the starter sprag not engaging to me. Not a difficult job, just parts are a bit expensive. Also check that the centre boss that the sprag teeth engage on is smooth, as indicated in Brian's tutorial:
www.ttr250.com/Sprag_replacement/TTR_sprag_replacement.htm
I think bikes are like girlfriends - once you start giving them some attention, they get a taste for it

Ride safe,
Simon.

One1 · Veteran Member

Lol yeah, i was looking at the one way on the diagram of the Fsm. Not a good timing. I have two days to go before i leave for a week with it and wont have the parts in time.

Holy balls at the price of that one way!

-- Edited by One1 on Wednesday 19th of April 2017 08:03:18 PM

-- Edited by One1 on Wednesday 19th of April 2017 08:09:14 PM

jasparach · Senior Member

Not cheap by any means. The Yamaha Majesty YP 250 scooter type bike i think shares the same setup from what i can gather on part numbers. The starters are definitely the same bar the rear mounting plate and i think that I looked into the rest of the parts at one time and i think they were the same if that is of any help to you.

John.

petenz · Super Guru

www.aliexpress.com/item/Motorcycle-Overrunning-Clutch-Beads-Fit-For-Yamaha-TTR250-TTR-250-Starter-Clutch-Sprag-Bearing-sprag-freewheels/32611348455.html

www.aliexpress.com/item/High-Quality-Motorcycle-Engine-parts-one-way-Starter-Clutch-Gear-Assy-For-Yamaha-TTR250-TTR-250/32360804243.html

www.aliexpress.com/item/Motorcycle-Starter-Clutch-Gear-Assy-For-Yamaha-TTR250-TT-R250-XT250-Tricker-250-Raptor-250-YFM250/32658908058.html

RodYorkttr · Senior Member

I have bought stuff from China in the past. While it can certainly be cheaper, I think in some cases, it's false economy(quality wise) and can slow down the repair if faulty/not right. I've had too many sub standard products to run the risk...especially as you need it quickly and want it right for your intended trip.

This is a better place to get the stuff from & you know it will be right....(do the job once and right)-job sorted!

https://totallyttrs.com/epages/699105d9-e4cc-4b32-b236-84e72cd67f84.sf/en_GB/?ObjectID=8938209

https://totallyttrs.com/epages/699105d9-e4cc-4b32-b236-84e72cd67f84.sf/en_GB/?ObjectID=1718355

-- Edited by RodYorkttr on Saturday 22nd of April 2017 07:12:40 AM

One1 · Veteran Member

Thanks guys i have a solution to my problem and to share what the issue is when a spragg fails, there is a tiny pin that holds each piece in place that breaks off. I lost 8 pins so when the last one failed that side became unable to evenly distribute the load.

-- Edited by One1 on Sunday 23rd of April 2017 06:15:38 AM

TTRfan · Super Guru

Hi Brian

I have seen that before. I can only think it happens when a worn sprag kicks back.

Sprag clutch spring.jpg

What is the solution you have found?

I know you are under a time constraint cry

Brian

One1 · Veteran Member

The pin merely convinces the cam to stay forward so it will rotate properly and not push out. A quick fix is to use a hard rubber that will sit there and push it in the same manner. It will likely drag and cause excessive wear, but if you HAVE TO start the bike for a day or two it will work while your new one is coming.

edit: i wouldnt unless you had to. I just took a different bike in this case.

-- Edited by One1 on Sunday 23rd of April 2017 05:05:41 PM

One1 · Veteran Member

I wanted a new starter clutch since I've bought everything else new, but i have a guy really wants my bike and said sunday he may buy it so i got a good deal on a used one.

ttr steve · Super Guru

Did you get the starter clutch included with the other bits in the photo?

One1 · Veteran Member

Yes i got everything. It was a good deal. Also, guy changed his mind as quick as he offered to buy it so i get to keep it. Yaaayyy.

-- Edited by One1 on Wednesday 26th of April 2017 03:22:07 AM