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VM26 starter circuit plunger seals 12 May 2021 14:25 #848360

  • motoaddict
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Hi gang, so in the first photo, on the end of the choke plunger there is a small rubber seal. Are these available or should the whole thing be replaced? Some look ok while others are worn out. Can i just replace with a suitably sized o-ring?



In this second image, are the rubber throttle shaft seals available anywhere? 



 
1976 KZ900

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VM26 starter circuit plunger seals 12 May 2021 14:36 #848361

  • Mikaw
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No eBay APP ID and/or Cert ID defined in Kunena configurationPM zed1015. He replaces the plunger seals. 

A little pricey 
www.partzilla.com/product/suzuki/13556-4...50fda1bd702fc8e43cd5

Better






 
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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Last edit: by Mikaw.

VM26 starter circuit plunger seals 12 May 2021 14:51 #848362

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If the shaft seals are still soft and not hard and cracked they will be ok to re-use. They are only dust seals.
For the plungers, regardless of looks they will all be worn and leaking and i offer a unique re-seating service using ethanol resistant custom made Viton seats .
Originally the plungers and their seals were not a serviceable part until now.
See the Ebay link below in my sig for info but PM me for the cheaper forum member price.

 
AIR CORRECTOR JETS FOR VM CARBS AND ETHANOL RESISTANT VITON CHOKE PLUNGER SEAL REPLACMENT FOR ALL CLASSIC AND MODERN MOTORCYCLE CARBURETTORS
kzrider.com/forum/23-for-sale/611992-air-corrector-jets-





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VM26 starter circuit plunger seals 15 May 2021 04:53 #848456

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So I managed to replace these seals myself yesterday. Let me show you how I did it. First you dig out the old ones. I used a dental pick and they pop out pretty easily. 



Then I took a suitable, gas resistant 1/16" thick rubber sheet and laser cut the correct size ring. 



Then just slid them over the needle and pushed under the lip that retains it. Works great!  The seat in the carb sits tall enough to reach the seal without the lip bottoming out. 

1976 KZ900
The following user(s) said Thank You: Nessism, Mikaw

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VM26 starter circuit plunger seals 15 May 2021 07:48 #848472

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Try reposting the pictures please
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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VM26 starter circuit plunger seals 15 May 2021 07:52 #848473

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Here is my version of DIY - see end of page 10:

www.kzrider.com/forum/11-projects/615161...50-project?start=108
78 KZ650B2A - resto in progress
www.kzrider.com/forum/11-projects/615161...s-1978-kz650-project
Other bikes: 1978 BMW R100/7, 1978 Moto Guzzi T3, 2016 DRZ400s

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VM26 starter circuit plunger seals 15 May 2021 15:02 #848501

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That looks just like my hack!  Has it held up over time?   Also can you see the pics I posted because I can. Is everyone else having trouble?

 
1976 KZ900

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VM26 starter circuit plunger seals 15 May 2021 18:03 #848505

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The photos were visible on my computer earlier but not anymore.  

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VM26 starter circuit plunger seals 15 May 2021 20:00 #848510

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That looks just like my hack!  Has it held up over time?   Also can you see the pics I posted because I can. Is everyone else having trouble?


 
I don't see pics. I don't know if my solution will hold up, but if this material correct - I don't see why it won't
78 KZ650B2A - resto in progress
www.kzrider.com/forum/11-projects/615161...s-1978-kz650-project
Other bikes: 1978 BMW R100/7, 1978 Moto Guzzi T3, 2016 DRZ400s

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VM26 starter circuit plunger seals 16 May 2021 18:14 #848562

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what about now

 
1976 KZ900
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VM26 starter circuit plunger seals 16 May 2021 18:51 #848564

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what about now


 
now I see, but use "insert all" button so they are big in a post.

I also see you scratched plunger like I did with first one getting old seal out. Torch works best - old one just pops out
78 KZ650B2A - resto in progress
www.kzrider.com/forum/11-projects/615161...s-1978-kz650-project
Other bikes: 1978 BMW R100/7, 1978 Moto Guzzi T3, 2016 DRZ400s

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VM26 starter circuit plunger seals 19 May 2021 13:59 #848740

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The scratched lip will not affect performance what so ever. I just tried "insert all" did it work on your end?

 
1976 KZ900
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