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Tracey Pepstar

Help? Whats going on with my bike?

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What model is your bike?
If it's a pre-KTM husky (TE310, TE490, TE510) then it sounds like the one way sprag clutch for the start motor. Common problem.
So is a starter clutch / sprag clutch the same thing?

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41 minutes ago, Tracey Pepstar said:
1 hour ago, p_edge said:
What model is your bike?
If it's a pre-KTM husky (TE310, TE490, TE510) then it sounds like the one way sprag clutch for the start motor. Common problem.

So is a starter clutch / sprag clutch the same thing?

Yes. 

Check out the post on http://www.cafehusky.com/threads/sprag-clutch-part-numbers.41148

If you have trouble sourcing the Husky part then try a sprag clutch from a 2005 honda crf250x (part number 28125-MT7-004). Turns out it's a common OEM item used in lots of makes of bike.

Make sure you note the direction of the pawls in the sprag clutch and put the new one in the same way. It's a one way clutch so you'll need to ensure you install it the right way.

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1 minute ago, p_edge said:

Yes. 

Check out the post on http://www.cafehusky.com/threads/sprag-clutch-part-numbers.41148

If you have trouble sourcing the Husky part then try a sprag clutch from a 2005 honda crf250x (part number 28125-MT7-004). Turns out it's a common OEM item used in lots of makes of bike.

Make sure you note the direction of the pawls in the sprag clutch and put the new one in the same way. It's a one way clutch so you'll need to ensure you install it the right way.

Good info, I always try to buy Honda parts when they're interchangeable for all my bikes regardless of brand. They're usually a much lower cost and stocked. I'm hoping my KTM will eventually become a Honda.

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yes starter clutch , or 1 way bearing ,,  I replaced the gear the bearing sits on as well,, it has a very smooth surface and if the bearing has been chattering on the surface and made it rough  you need 2 parts

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You should be able to find the repair manual here: https://husqvarnaoutlet.com/repair_manuals and the part numbers here: https://husqvarnaoutlet.com/parts_fiche

I wouldn't bother changing the flywheel or stator housing that the sprag clutch runs inside. I replaced the sprag clutch twice in the time I owned a 2010 TE310. The cause of failure is the spring not holding the clutch pawls in place rather than the surfaces not being smooth.

The sprag clutch is item 4 below...

895049315_ScreenShot2019-03-14at8_34_44pm.thumb.png.0b2b80a4944ca30d5f34efe003e5e06c.png

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FYI, shot around to the mechanic this afternoon so he could have a look and give his opinion... also beleives its the starter clutch.

Getting quotes on parts now.
Will update when I know more.
Thanks for all your help guys

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You should be able to find the repair manual here: https://husqvarnaoutlet.com/repair_manuals and the part numbers here: https://husqvarnaoutlet.com/parts_fiche
I wouldn't bother changing the flywheel or stator housing that the sprag clutch runs inside. I replaced the sprag clutch twice in the time I owned a 2010 TE310. The cause of failure is the spring not holding the clutch pawls in place rather than the surfaces not being smooth.
The sprag clutch is item 4 below...
895049315_ScreenShot2019-03-14at8_34_44pm.thumb.png.0b2b80a4944ca30d5f34efe003e5e06c.png
Your pic is pointing to #4
Is that correct?
I thought it would be #31???

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Item 4 will cause slippage which is your symptom.  

The only way to be sure is to take the RHS engine cover off and troubleshoot from there before you buy parts.

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You should be able to find the repair manual here: https://husqvarnaoutlet.com/repair_manuals and the part numbers here: https://husqvarnaoutlet.com/parts_fiche
I wouldn't bother changing the flywheel or stator housing that the sprag clutch runs inside. I replaced the sprag clutch twice in the time I owned a 2010 TE310. The cause of failure is the spring not holding the clutch pawls in place rather than the surfaces not being smooth.
The sprag clutch is item 4 below...
895049315_ScreenShot2019-03-14at8_34_44pm.thumb.png.0b2b80a4944ca30d5f34efe003e5e06c.png
Would the sprag clutch failure result in slipping when using the kick starter as well, or only when using the electric starter?

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14 hours ago, Mr.Fox said:
On 3/14/2019 at 8:28 PM, p_edge said:
You should be able to find the repair manual here: https://husqvarnaoutlet.com/repair_manuals and the part numbers here: https://husqvarnaoutlet.com/parts_fiche
I wouldn't bother changing the flywheel or stator housing that the sprag clutch runs inside. I replaced the sprag clutch twice in the time I owned a 2010 TE310. The cause of failure is the spring not holding the clutch pawls in place rather than the surfaces not being smooth.
The sprag clutch is item 4 below...
895049315_ScreenShot2019-03-14at8_34_44pm.thumb.png.0b2b80a4944ca30d5f34efe003e5e06c.png

Would the sprag clutch failure result in slipping when using the kick starter as well, or only when using the electric starter?

Yes - the kick start will slip as well. The kick starter drives through item 27 and item 4 to drive the crankshaft.

It's possible to crash start the bike by selecting a gear and dropping the clutch.

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That cafe husky link was useful. It showed that you can 'fix' it by buying a seal which has the same size spring thing in it.

You pull that out and replace the mangled one inside the sprag clutch and it fixes the issue for a much cheaper price.

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You will find the slippage is intermittent and less likely to occur when the bike is cold. You'll see once you take the side cover off that the kick starter and the starter motor drive through the sprag clutch.

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You will find the slippage is intermittent and less likely to occur when the bike is cold. You'll see once you take the side cover off that the kick starter and the starter motor drive through the sprag clutch.

Yes, most definately occurs more once warm. I haven't started it often enough to rule out slipping with the kicker when warm though, so I will take your word for it. Have looked into an old project bike just to get my head around how it all works and it seems quiet a similar setup. Thanks for all your help. The journey has been an interesting learning experience regardless! d6e03512d256531065e3412878f2641f.jpg&key=ad243c0e9ff8b414d9b5fd487d774e980c0f317c80a1aa12a3d533a4e4d40c02b01fc3d533246a3019d69b8bb61856f7.jpg&key=71127a4c096fffe922d80760dcc582d783bf42a04635e07ce13162dceec5cfcb

 

 

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On the money with the Sprag Clutch! New one is in along with new clutch plates. Just need to bleed the clutch now and should be good to go!
The apprentice was in on it too! d096abe74fff64f87dfa31af62e2282b.jpg8f25552cad6ed079acafd220d60a3165.jpg2ae173598a3852c4940141c8e7a41e37.jpgcd0414835a0a98bd0e061c341c0c60d8.jpg

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