KZR's Bikes of the Month for 2024

Mikuni Flatslides Bell crank wheel

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14 Mar 2023 18:03 #881523 by rivman15
Mikuni Flatslides Bell crank wheel was created by rivman15
I am looking for recomendations for someone to replace a bell crank wheel on a brand new set of Mikuni 34 Flatslides, Carbs have less than 5 miles on them and I noticed after first ride. I have the brand new part supplied by Mikuni, I suspect a bad cast on the original. Carbs have been drained of fuel. Unfortunately no one local to me can do it. Would prefer your recomendation and someone you have used before. Appreciate the help in advance. Thanks, Joe

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  • Scirocco
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  • Never change a running system
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14 Mar 2023 18:57 #881524 by Scirocco
Replied by Scirocco on topic Mikuni Flatslides Bell crank wheel
Any pics of the bad bell crank wheel would help?
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15 Mar 2023 05:00 #881536 by rivman15
Replied by rivman15 on topic Mikuni Flatslides Bell crank wheel
Here is a picture of the new one. Carbs are still on bike. 

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15 Mar 2023 05:02 #881537 by rivman15
Replied by rivman15 on topic Mikuni Flatslides Bell crank wheel
The crack is right where the throttle cable attaches to position two. If I take carbs off bike I will try to get a picture. Thanks.

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  • Scirocco
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  • Never change a running system
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15 Mar 2023 09:35 #881550 by Scirocco
Replied by Scirocco on topic Mikuni Flatslides Bell crank wheel
You need a thin pin drift punch to remove the small roll pin. 

 
 
 
 
 
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17 Mar 2023 15:46 - 17 Mar 2023 15:48 #881652 by Injected
Replied by Injected on topic Mikuni Flatslides Bell crank wheel
There is also a roll pin on the throttle return spring holder.

I can't give any recommendations on people who could replace that bell crank for you. The only place that comes to mind is W.G. Carbs - Never used them as I do all my own carb work.

Not sure why you could not do it on your own? The throttle shaft once free of all the bolts, and roll pins, just slides out the side of the carb body (rubber cap on the return spring end) you don't have to take the carbs off the mount rails to do it. You don't even need to take the slides out of the bodies.
Last edit: 17 Mar 2023 15:48 by Injected.
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18 Mar 2023 15:15 #881716 by rivman15
Replied by rivman15 on topic Mikuni Flatslides Bell crank wheel
I probably will end up taking them apart myself. I was just thinking it would be easier to have them done by a pro that has worked on them before. Espiecially since they are brand new. I do have a couple other non motorcycle projects going on at the moment. As soon as they are done I will handle the carbs. Thanks for the help and I will keep you updated.

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18 Mar 2023 15:32 #881719 by Mikaw
Replied by Mikaw on topic Mikuni Flatslides Bell crank wheel
I have a set on RS34’s on the bench. I looked them over. Not a difficult job. I can offer up help if needed. 

1976 KZ 900 A4 kzrider.com/forum/11-projects/613548-1976-kz-900-a4
1976 KZ 900 B1 LTD
1978 KZ 1000 B2 LTD
1980 KZ 750 E1
Kowledge Speaks, But Wisdom Listens.
Jimi Hendrix.
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18 Mar 2023 20:45 #881741 by TexasKZ
Replied by TexasKZ on topic Mikuni Flatslides Bell crank wheel
If they are brand new and have a casting flaw, that should be a warranty job.

1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough

www.kzrider.com/11-projects/620336-anoth...uild-thread?start=24

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19 Mar 2023 09:58 #881777 by rivman15
Replied by rivman15 on topic Mikuni Flatslides Bell crank wheel
9 out of 10 times companys like Mikuni will claim mechanical error vs a bad cast. Ive been down that road before. It was easier to order the bell crank and have it repaired.In fact I remember a time Larry Cavanaugh had installed a brand new set of 1075 wiseco pistons on his personal bike. He promptly blew one up. Wiseco told him it was a bad install and to rub rocks. Can you imagine telling a renowed builder that? I remember cause I had a set and gave them to him so he could get his bike back together before winter hit. We ended up becoming great friends after that. He actually did the head on my 1327.

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27 Mar 2023 14:11 #882087 by DFIGPZ
Replied by DFIGPZ on topic Mikuni Flatslides Bell crank wheel
joe
 if you want to ship to Maryland I have had many sets of Mikuni Flatslides apart shoot me a PM if you do not want to tackle yourself

Barry

1984 750 Turbo

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27 Mar 2023 14:52 #882088 by Wookie58
Replied by Wookie58 on topic Mikuni Flatslides Bell crank wheel

joe
 if you want to ship to Maryland I have had many sets of Mikuni Flatslides apart shoot me a PM if you do not want to tackle yourself

Barry
PM doesn't work but I can put you in touch by email if you are both in agreement

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