ktm starter problem long shot here?

[dooman92]

60 psi is low so decompressor probably working.

 

[raleigh111]

Have you done this??

swapped starters. still has that lag.

 

[raleigh111]

60 psi is low so decompressor probably working.

Yes i agree, checked my 13 that spins fast and it was showing 70-80 but was turning over faster.

 

[raleigh111]

Free wheel side.

 

[dooman92]

Bingo! You can see the freewheel clutch under the main gear (main gear on end of crankshaft) is turning and the crank is not or at different speed. That one way clutch is slipping. The freewheel is the larger diameter but thinner gear just behind the main gear. That clutch engages to connect starter to crank and then slips as the crank turns faster than the starter so the starter armature is not spun by the crank when the engine revs.

 

[raleigh111]

Bingo! You can see the freewheel clutch under the main gear (main gear on end of crankshaft) is turning and the crank is not or at different speed. That one way clutch is slipping. The freewheel is the larger diameter but thinner gear just behind the main gear. That clutch engages to connect starter to crank and then slips as the crank turns faster than the starter so the starter armature is not spun by the crank when the engine revs.

Are you sure? When it does grab it spins slow? I guess you need a special ktm puller to get that free wheel off. Anyone want to rent me one? HA

 

[dooman92]

Main gear is one that drives the clutch basket. Unfortunately you have to pull the main gear to replace that clutch and takes a special puller.

 

[dooman92]

It turns slow in part because it looses momentum when it slips. It will crank better with a new starter clutch.

 

[raleigh111]

Okay i ordered puller. I can post a update when i get the puller and see what the freewheel looks like. Hope this fixes it.

 

[raleigh111]

It turns slow in part because it looses momentum when it slips. It will crank better with a new starter clutch.

here is it off

 

[raleigh111]

It turns slow in part because it looses momentum when it slips. It will crank better with a new starter clutch.

Free wheel off..

 

[raleigh111]

Free wheel off..

View attachment 345632

 

[dooman92]

Hard to tell from video if you made it slip. Could take more than hand torque to make slip. Any flat spots on rollers inside the housing?

It was definitely slipping in earlier video. A new one will help the starting.

 

[raleigh111]

Hard to tell from video if you made it slip. Could take more than hand torque to make slip. Any flat spots on rollers inside the housing?

It was definitely slipping in earlier video. A new one will help the starting.

Installed new one today and it turns over like it should. All problems gone. Thanks for your help.

 

[dooman92]

Great. Those videos are great diagnostic tools. Glad to help.

 

[tillbuilt]

Yes, it looks like the starter clutch.

Youtube video of replacement.