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Carb cleaning
- eric77kz
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77 KZ650 C
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- Nessism
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Good luck
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- kaw-a-holic
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eric77kz wrote: Ok KZ friends. I was told I might be able to clean my carbs while on the bike. I ended up taking the carbs off! I removed one bowl while still on the bike and I was shocked by the amount of build-up! After an extensive cleaning of jets bowls and floats I was pretty happy, however.... Before cleaning I manually moved the throttle up and down. It was slow and slugish. Half way through I tried it again and it was much better. Got done completely and tried it they went up once and down did it again and they don't act like they want to go back down! What am I missing?? Help!
Is the return spring attached? Are both throttle cables attached correctly?
A full tear down is the only way to go. Dont forget to do the clear tube method to get the float levels ajusted correctly.
Good luck
Jon
1977 KZ1000a1
Mesa, AZ
Phoenix Fighter Project
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- 74ullc
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eric77kz wrote: Ok KZ friends. I was told I might be able to clean my carbs while on the bike. I ended up taking the carbs off! I removed one bowl while still on the bike and I was shocked by the amount of build-up! After an extensive cleaning of jets bowls and floats I was pretty happy, however.... Before cleaning I manually moved the throttle up and down. It was slow and slugish. Half way through I tried it again and it was much better. Got done completely and tried it they went up once and down did it again and they don't act like they want to go back down! What am I missing?? Help!
You're missing telling us what year/model your bike is. You're missing telling us more details like is this with the throttle cables attached or with carbs just on the bench?
It's impossible for us to give you any specific help if we don't know what kind of carbs you are dealing with. More info would also be helpful.
"Hey, I tried to crank my engine and it was kinda stiff, so I took it apart and now its stuck. Can anyone help me?" Could you give any sort of helpful answer to that? If you want to get good feedback you have to give us something to go on.
Gulf Coast, Texas
1977 KZ1000LTD
1984 VF700F
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- eric77kz
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77 KZ650 C
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- martin_csr
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Remove the float bowls & have a look at the underside of the carb bodies & maybe take a pic or two. The main jets should screw into bleeder pipes which are screwed into the carb bodies. Replace the main jet o-rings. My 81 650 has pilot jets that can be unscrewed -- I think yours are the same. There may be some sort of nylon plug fitted into the underside of the carb body: if so, there will be a pilot adjusting screw under there. Again, keep in mind that your carbs may not be identical to some of the other 650s from the 70s.
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- eric77kz
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77 KZ650 C
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- 650ed
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1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
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- martin_csr
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The main jets & bleeder pipes have been removed. Did you take them out or are they missing?
Note: since you were wondering about a diaphragm, your carbs do not have an accelerator pump - the AP has a diaphragm (some APs have 2).
For comparison: ~1979 VM24 carbs w accelerator pump.
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- eric77kz
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77 KZ650 C
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- eric77kz
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77 KZ650 C
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- martin_csr
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Z1Enterprises.com carries the set for around $40 & worth every penny if yours are shot.
I remove the ducts from the airbox before installing the carburetors.
Then install the carbs into the carb holders.
Then install the ducts, check the fitment, & snug up the carb holder clamps (you shouldn't need to crank them down).
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