Transmission upshift problem! - Kawasaki Forum :: KawasakiWorld.com
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post #1 of 19 Old 06-01-2018, 07:14 PM Thread Starter
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Transmission upshift problem!

Finally got the bike back together after a couple years and rode it today and ran into a transmission upshifting problem. It will downshift totally fine. It is very hard to get out of 1st into second will get stuck in neutral a lot. This will happen a lot trying to shift up into all gears and between any gear it will go into a neutral like state. I also trying upshifting with no clutch and it seemed better through the higher gears 1st to second is the worst. This is a new tranny to the bike it looked good before going in. My original tranny had bad dogs on second so I replaced it. My bike is an 00. Hoping I can fix this without a tear down Thanks
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post #2 of 19 Old 06-02-2018, 05:36 AM
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check that the linkage is installed properly. you want it to be at 90 degrees and then adjust the shifter up or down by adjusting the length of the rod (not by the splines)

01 ZX-12R 8.84 @ 156.3 on dot tires, NA.... turbo 8.47 @ 164
00 ZX-12R 8.62 @ 165.2 no bars, slicks, 55 shot... turbo 8.32 @ 173
00 ZX-12R 1: 222.046 1.5: 226.390 Worlds Fastest NA Kawasaki
00 ZX-12R street turbo 1: 227.9 1.5: 234.1
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Worlds fastest ZX-12R CMG Racing RCC Turbos
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post #3 of 19 Old 06-02-2018, 05:49 AM Thread Starter
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Thanks that's definitely going to be my step one.
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post #4 of 19 Old 06-02-2018, 08:09 AM Thread Starter
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Adjusted that it's way better and rideable now but still feel it should be shifting abit better sometimes 1st to 2nd still isn't the easiest and my FI light is on now lol
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post #5 of 19 Old 06-02-2018, 08:41 AM
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what code?

01 ZX-12R 8.84 @ 156.3 on dot tires, NA.... turbo 8.47 @ 164
00 ZX-12R 8.62 @ 165.2 no bars, slicks, 55 shot... turbo 8.32 @ 173
00 ZX-12R 1: 222.046 1.5: 226.390 Worlds Fastest NA Kawasaki
00 ZX-12R street turbo 1: 227.9 1.5: 234.1
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Worlds fastest ZX-12R CMG Racing RCC Turbos
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post #6 of 19 Old 06-02-2018, 08:52 AM Thread Starter
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Haven't checked it yet decided to set it aside and get some other things done today
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post #7 of 19 Old 06-02-2018, 10:03 AM Thread Starter
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Decided to check and when I jump the wire the FI light will stay on and that's all I get and now no light on
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post #8 of 19 Old 06-02-2018, 12:41 PM Thread Starter
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Any more ideas on the Shifting?
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post #9 of 19 Old 06-02-2018, 02:29 PM Thread Starter
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Getting code 12 now there was no light then popped.it.in gear and light came on
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post #10 of 19 Old 06-02-2018, 07:25 PM
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code 12 is iap sensor
if you just did the trans, maybe you dont have it together quite right? a spring out of place maybe?
you do know the positive neutral finder prevents shifting from 1-2 when not moving correct? its possible thats damaged.

01 ZX-12R 8.84 @ 156.3 on dot tires, NA.... turbo 8.47 @ 164
00 ZX-12R 8.62 @ 165.2 no bars, slicks, 55 shot... turbo 8.32 @ 173
00 ZX-12R 1: 222.046 1.5: 226.390 Worlds Fastest NA Kawasaki
00 ZX-12R street turbo 1: 227.9 1.5: 234.1
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Worlds fastest ZX-12R CMG Racing RCC Turbos
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post #11 of 19 Old 06-02-2018, 09:03 PM Thread Starter
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How can I see if it's damaged? Maybe I'll pull.tye side cover off and possible clutch and take a good look there too really.hoping I don't have to drop.the engine out
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post #12 of 19 Old 06-02-2018, 10:10 PM
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you cant see that unless you take the trans apart. its 3 little ball bearings that block a gear from sliding until centrifugal force moves them out of the way. they usually get taken out on a race bike to prevent the possibility of a missed shift due to a failure.

01 ZX-12R 8.84 @ 156.3 on dot tires, NA.... turbo 8.47 @ 164
00 ZX-12R 8.62 @ 165.2 no bars, slicks, 55 shot... turbo 8.32 @ 173
00 ZX-12R 1: 222.046 1.5: 226.390 Worlds Fastest NA Kawasaki
00 ZX-12R street turbo 1: 227.9 1.5: 234.1
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Worlds fastest ZX-12R CMG Racing RCC Turbos
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post #13 of 19 Old 06-02-2018, 10:41 PM Thread Starter
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Yeah I remember seeing them now that u talk about them could there be anything else that would effect my other shifts too
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post #14 of 19 Old 06-03-2018, 07:11 AM
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the springs etc on the shift mechanism behind the clutch could be messed up

01 ZX-12R 8.84 @ 156.3 on dot tires, NA.... turbo 8.47 @ 164
00 ZX-12R 8.62 @ 165.2 no bars, slicks, 55 shot... turbo 8.32 @ 173
00 ZX-12R 1: 222.046 1.5: 226.390 Worlds Fastest NA Kawasaki
00 ZX-12R street turbo 1: 227.9 1.5: 234.1
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Worlds fastest ZX-12R CMG Racing RCC Turbos
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post #15 of 19 Old 06-03-2018, 07:26 AM Thread Starter
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Yeah I might double check that I want to see how my oiling mods turned out on the clutch too as for my code 12 I have a manual so.i can go through and check it out
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