counterclockwise

Hello,

just rebuit my motor because i replace the transmission.
All was looking good until i check valve clearance.
Then i can see the motor can turn counterclockwise...
What can be my error ?

Any idea is welcome

Regards
Fox

to me, i'm not in neutral position... that can explain, not ?

Most KZ engine can turn in both directions on the crank manualy and in gear.
Only the e-starter turns the engine clockwise.
For checking the valve clearance and cam chain slack you have to turn only clockwise.
Only the KZ twins turning counterclockwise AFAIK.

I am not completely cler about what the question is. On a four cylinder KZ, when viewed from the ignition side, the crankshaft turns clockwise when the engine is running . When the engine isn't running, you can turn it counter clockwise with a wrench, but it is a bad idea to do so.
I am not sure what being in neutral has to do with this.

With a wrench i can not turn the cranckshaft counterclockwise actually.
Before my rebuilt it was possible.

(you have to turn clockwise and then counterclockwise, if you want replace a shim with the special tool for example.)

You may have valves touching each other if your timing is not correct. This would stop the engine from rotating clockwise as is should in normal operation. I've found the best sequence for installing the cams is to put the exhaust cam in place while holding the chain to prevent any slack. Then install the intake cam. Then install the cam bushings. Then install the center chain guide. Then install the cam chain tightener at the back of the engine.

Some questions for you.

1) When you put the new transmission in did you set it to neutral when you put the ball bearings in?
2) When you put the cylinders in place were you able to turn the crankshaft?
3) When you put the cams in place did you put the exhaust cam in on the mark on the cam sprocket?
4) Did you install the intake cam 28 links behind the mark on the exhaust cam?

Once, while setting the timing I was rotating the engine with a wrench on the ignition bolt and I broke the pin that holds the advance mechanism in place. Ever since then I've used the kickshaft to rotate the engine when installing shims. And yes, you are correct that you need to turn the crankshaft counter clockwise to remove the shim tool, but you should not turn the crank any more than necessary to remove the tool. With a bit of practice you can do it with about a quarter of a turn of the cam.