TOPIC:

I couldn't find anything on the counter balance system. Where should I be looking at on the internet/the bike?

For real thank you guys for your help already.

This will be a valuable tool moving forward.

www.kzrider.com/modules/ServiceManuals/K...l%20KZ750%20Twin.pdf

Here is an exploded view of the innards. The counterbalancer shafts live below the crankshaft and are driven by that chain.

www.partzilla.com/catalog/kawasaki/motor.../crankshaft-balancer

Try the rear wheel backward I described above. If it's something that can be undone, it will be a clue.

No shavings with plenty of oil is good news.

I had one in my bay in the late 80's with that same problem. I don't remember if it was under the right or left engine cover. It had come apart and the bike hopped around like a stung rabbit.
Steve

If the counter balance system is shot it could be seized the engine.




www.z750twin.de/getriebe.htm

loudhvx wrote: Try the rear wheel backward I described above. If it's something that can be undone, it will be a clue.

No shavings with plenty of oil is good news.

I don't have a center stand, but she will roll backwards pretty freely (there is a little pressure) in first gear with no spark plugs.

So are you saying you can hear the pistons moving up and down when you roll the bike backward in gear? But if you go forward it will move a bit then lockup?

I would remove the little ignition cover on the right side. That has a bolt holding the advancer that can cone loose as well.

And I suppose next would be the entire clutch cover or oil pan but those are far less convenient to remove. I wonder if there is anything goofy under the sprocket cover...that's pretty easy to pull off.

loudhvx wrote: So are you saying you can hear the pistons moving up and down when you roll the bike backward in gear? But if you go forward it will move a bit then lockup?

I went back out and put my clutch back together, threw it in first, and I can roll it backwards with my clutch engaged. The spark plugs are out and I can hear my engine give a little sigh and she gives me some resistance when I do it. I can go as far backward AND forward doing this as I want to.
My kickstart swings with an engaged clutch as well, idk if that matters.

Ok, so there is no oil in it anymore, correct, so you don't want to do a lot of crank rotating quickly, but normally it's safe to turn by hand slowly.

The bolt that holds the rotor/flywheel on is usually the strongest bolt for turning the crank by hand. So you can put the bike in neutral and rotate the engine with a good socket wrench from there. The crank should rotate opposite direction of the wheels.
This will let you feel if there are any rough spots while turning. The camshafts will give some smooth resistance and pushes, but with the plugs out, it shouldn't bind and nothing should feel rough.

If you have some new motorcycle oil laying around, and it would make you comfortable, you can add some so the pump will put oil into the bearings.

I always put a note to myself over the ignition switch to remind me there is no oil if I have to leave it empty. People often forget and might start a bike without oil. I've come close a few times. (I try not to let a bike sit around without oil if I can help it.)

The plug holes should make a swoop sound as the pistons move up and down completely.

Again check under the ignition cover and sprocket cover as those won't leak any oil.

Rotating the crank will rotate the balance shafts and clutch basket.

To check the trans you would need a stand for the back of the bike.

loudhvx wrote: Ok, so there is no oil in it anymore, correct, so you don't want to do a lot of crank rotating quickly, but normally it's safe to turn by hand slowly.

The bolt that holds the rotor/flywheel on is usually the strongest bolt for turning the crank by hand. So you can put the bike in neutral and rotate the engine with a good socket wrench from there. The crank should rotate opposite direction of the wheels.
This will let you feel if there are any rough spots while turning. The camshafts will give some smooth resistance and pushes, but with the plugs out, it shouldn't bind and nothing should feel rough.

If you have some new motorcycle oil laying around, and it would make you comfortable, you can add some so the pump will put oil into the bearings.

I always put a note to myself over the ignition switch to remind me there is no oil if I have to leave it empty. People often forget and might start a bike without oil. I've come close a few times. (I try not to let a bike sit around without oil if I can help it.)

I put the rest of what oil I had in the bike just to be safe. I would absolutely be the one to fix this, then forget it doesn't have oil (dang short term memory lol) and immediately break it again..

The motor rotates smooth in both directions.

I also took the ignition cover off and the bolt is secure. (I had a stripped screw and didn't want to deal with it. Lol)