Weak Starter, or ???

I'm kinda bummed. This has been over a year in the making (it's a slow project). I just got my bike back together with a new (rebuilt) starter, and the starter doesn't want to turn the engine very easily. I'm not sure if the starter is weak, or what. But I thought I'd post here to see what people who actually know what they're doing have to say.

What happens: I press the start button, the starter motor engages, but it only turns the engine once every couple seconds. I briefly connected my car battery to it to make sure it wasn't the battery, and it does the same thing. FYI: Kickstarter acts normal. Here's a video:

Sounds like it's time to rebuild the starter clutch. The starter itself is probably fine. Ed

Sounds like it's time to rebuild the starter clutch. The starter itself is probably fine. Ed

That was the last of the repairs I went through this past year. I just finished rebuilding the starter clutch a couple weeks ago. I reused some parts and replaced others with new parts, NOS, and used. Before I closed up the bike, I ran the starter (briefly) just to witness the clutch engaging properly. It was - no slipping.

So, obviosly I can't be 100% positive at this point, but I "believe" that the starter clutch is not slipping. It catches, but just won't turn the engine easily.

Maybe Im just not used to listening to a 750 twin turn over,but it sounds really weird to me anyway! :blink:

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Did you torque the bolt on end of crank?
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wireman wrote: Did you torque the bolt on end of crank?

I did. To 55ft-lbs (according to the service manual).

i kinda got the same problem with my 76 kz900, but the key inside my starter keep breaking anyone know how i can fix it this will be the twelth key i have went through

Your starter clutch is still bad.

KZ_900_Z1 wrote: i kinda got the same problem with my 76 kz900, but the key inside my starter keep breaking anyone know how i can fix it this will be the twelth key i have went through

Click here > www.kzrider.com/forum/4-electrical/56135...eeps-breaking#561350

Good Fortune!

Sounds like the starter's just spinning freely to me. Starter clutch would make sense in that scenario or else whatevers supposed to make sure it engages, I'm not really that familiar with the starter setup on these things, it's different than I'm used to.

Hmmm... I guess I'm a little confused as to why it might still be the starter clutch, even though it's not slipping. But again, this is my learning bike. So I freely admit ignorance.

If I take this thing apart again, what exactly do I need to be looking for? Because to my unexperienced eyes, it all looked to be working properly before I put the stator cover back on.

I have installed brand new starter clutch components and it tested fine after putting it all together only to find out it still didn't work. I know you don't want to hear this because you just replaced it but your starter clutch is bad or at least something in the starter clutch is bad.
Check the surface the rollers ride on, the rollers themselves and their springs. Make sure none of these items are pitted or show any signs of wear. If the starter gear shows any cupping or wear replace it. Also if you have not done so replace the roller springs with new ones not used even they are within specs.