Question about kawasaki Z 750 Motorcycles

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I have a 1978 KZ750 twin that will shift into neutral or 2nd gear but no other gear. I have removed the engine from the frame and removed the side covers and oil pan. I can't see any damage or debris, its clean. If I remove the lower shifting fork, I can shift whats seems through the gears. When both forks are in place it goes back to only shifting to neutral or 2nd gear. The shifting fork looks perfect, no damage. Ideas?

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The lower fork is bent. It is impossible to just look at a fork and see the bend. Wierd that you can't see the bend, but it IS there.
Check the shat that the fork slides on to be sure it is not bent also. Bent shafts do not happen often but they do happen. The bad fork should slide freely on the shaft. Also, put the shaft on a flat surface. Roll it and look for any gaps between the table and the shaft. If a gap shows the shaft is bent.

I checked Babbitt's and it looks like they have forks and such for your bike. You might want to get fresh points, condensor, engine seals and gaskets, etc.. Please rate my answer. Thanks.

Posted on Aug 19, 2010

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3 With your right foot on the ground, behind your left foot: place your left foot on the left foot peg, with your toe under the shifter; squeeze in the clutch.
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Hello and thanks for the question.
Keep in mind that Kawasaki has a lock out in the transmission that will not let the bike into second gear unless the bike is moving at least 15-20 mph. It will not shift into second gear while the bike is sitting still. If the bike is moving at that speed the lock out becomes inoperative. If you are riding the bike and it does not shift, you have a problem with the shift mechanism or in the transmission itself.

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