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Mikuni VM26

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Wayne1960
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Mikuni VM26

#1 PostAuthor: Wayne1960 » Fri Aug 01, 2014 6:42 am

Does anyone have the tuning manual for the Mikuni VM26 the carbs that are fitted on my Z900 A4 i can find plenty for the smootbore but nothing for the actual ones i have.
Just purchased a 1976 UK Z900 A4 for renovation. Wish me luck.
Bike now finished what a joy!

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#2 PostAuthor: mike_p » Fri Aug 01, 2014 7:11 am

Is this what you are looking for ?

http://www.mikuni.com/pdf/vmmanual.pdf

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#3 PostAuthor: Wayne1960 » Fri Aug 01, 2014 7:14 am

ok thats not the same as mine i found that one but the tops of mine the adjusters for the throttle slides are completely differant.
Just purchased a 1976 UK Z900 A4 for renovation. Wish me luck.

Bike now finished what a joy!

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chrisu
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#4 PostAuthor: chrisu » Fri Aug 01, 2014 7:19 am

Wayne,

What are you trying to do?

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#5 PostAuthor: Wayne1960 » Fri Aug 01, 2014 7:34 am

adjust the throttle slides i have read what Steve Smethust descibes but not familiar with the termonology.

I have the tops off an the pison is bottoming out on the bores with no gap.
Just purchased a 1976 UK Z900 A4 for renovation. Wish me luck.

Bike now finished what a joy!

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#6 PostAuthor: z1bman » Fri Aug 01, 2014 7:34 am

all you need to know is explained in the kawasaki z900 workshop manual?

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#7 PostAuthor: Wayne1960 » Fri Aug 01, 2014 7:38 am

understood but the carbs desribed in the z900 manual are differant to the A4. i have looked at all the stuff i have and cant find anything the same. however thay are the satndard carbs for my bike
Just purchased a 1976 UK Z900 A4 for renovation. Wish me luck.

Bike now finished what a joy!

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#8 PostAuthor: z1bman » Fri Aug 01, 2014 7:59 am

the slide height adjusters are under the top cover on the z900 /z1000 & on the outside of the carb's on the z1/a/a. 8mm lock nut with slotted adjuster. slide height measurement should be the same from z1 - z900 a4 the procedure of adjustment is the same only difference is where the adjusters are fitted

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#9 PostAuthor: Wayne1960 » Fri Aug 01, 2014 8:25 am

ok thanks thats as far as i have got. cam tops off and redy to go. There are 3 bolts or screws i am looking at.
1 is the bolt that clamps the piston to the round bar. no adjustment there
2 is a screw with a tab washer
3 is a screw inside a nut

Now i'm a gambler but the odds are stacked against me 50/50 picking the right one. I think the one with the screw and nut is for syncing the carbs!
Just purchased a 1976 UK Z900 A4 for renovation. Wish me luck.

Bike now finished what a joy!

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#10 PostAuthor: zed1015 » Fri Aug 01, 2014 8:52 am

Yes! It's the one with the screw driver slot and locknut.
No need to touch the others.

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#11 PostAuthor: tlc » Fri Aug 01, 2014 8:53 am

Correct Wayne. Now go and buy a lottery ticket.

The slotted screw is the adjuster once you have loosened the lock nut.
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chrisu
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#12 PostAuthor: chrisu » Fri Aug 01, 2014 8:54 am

Wayne1960 wrote:understood but the carbs desribed in the z900 manual are differant to the A4. i have looked at all the stuff i have and cant find anything the same. however thay are the satndard carbs for my bike




Z1, Z1A, Z1B carbs are different but the workshop manual for an A4 shows the right carbs.

UPDATE: - THE PDF WORKSHOP MANUAL I HAVE DOES NOT HAVE THE A4 CARBS SECTION IN IT. THE PHYSICAL ONE DOES. ALSO THE CLYMER MANUAL HAS THE RIGHT DETAILS AS WELL. NOT CHECKED THE HAYNES ONE AS I'D NEVER TRUST IT ANYWAY.

PM me your email address and i'll send you the relevant pages.

Also if you look at the how-to i did on synching carbs you should be able tosee which is the right one but its the one at the back connected to the slide itself not the one on the shaft.

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#13 PostAuthor: Wayne1960 » Fri Aug 01, 2014 9:46 am

Chris email sent

Thanks
Just purchased a 1976 UK Z900 A4 for renovation. Wish me luck.

Bike now finished what a joy!

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chrisu
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#14 PostAuthor: chrisu » Fri Aug 01, 2014 10:02 am

you have mail

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#15 PostAuthor: z1bman » Fri Aug 01, 2014 10:31 am

yes the carbs are obviously different but the slide height adjustment is the same apart from the adjusters are under the carb top cover 3 screws on the z900/z1000


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