- Posts: 500
- Thank you received: 628
O-ring size for main jet holder on Mikuni VM 26 ( Z1000 A1 / A2 )
- MFP-Joe
-
Topic Author
- Offline
- User
-

Registered
- forever 18 when on my bike
Less
More
30 Aug 2025 10:46 #916577
by MFP-Joe
Greetings, Joe
O-ring size for main jet holder on Mikuni VM 26 ( Z1000 A1 / A2 ) was created by MFP-Joe
What size have the original O-ring for the main jet holder on these Mikuni VM 26?
I will change them now all on my carbs, it would be nice to know the size, thank you!
I will change them now all on my carbs, it would be nice to know the size, thank you!
Greetings, Joe
Please Log in or Create an account to join the conversation.
- Nessism
-
- Offline
- Sustaining Member
-

Registered
Less
More
- Posts: 8112
- Thank you received: 3494
30 Aug 2025 11:11 #916578
by Nessism
Replied by Nessism on topic O-ring size for main jet holder on Mikuni VM 26 ( Z1000 A1 / A2 )
The following user(s) said Thank You: asphalt900, MFP-Joe, Gdizard
Please Log in or Create an account to join the conversation.
- Gdizard
-
- Offline
- User
-

Registered
- 12/03/1954
Less
More
- Posts: 122
- Thank you received: 21
30 Aug 2025 12:19 #916581
by Gdizard
Replied by Gdizard on topic O-ring size for main jet holder on Mikuni VM 26 ( Z1000 A1 / A2 )
If possible can someone post a photo of the main jet holder?
Thank you for reading this
Thank you for reading this
The following user(s) said Thank You: asphalt900
Please Log in or Create an account to join the conversation.
- asphalt900
-
- Offline
- Sustaining Member
-

Registered
Less
More
- Posts: 1724
- Thank you received: 1168
30 Aug 2025 13:12 #916586
by asphalt900
Replied by asphalt900 on topic O-ring size for main jet holder on Mikuni VM 26 ( Z1000 A1 / A2 )
The following user(s) said Thank You: MFP-Joe
Please Log in or Create an account to join the conversation.
- Gdizard
-
- Offline
- User
-

Registered
- 12/03/1954
Less
More
- Posts: 122
- Thank you received: 21
30 Aug 2025 13:42 #916589
by Gdizard
Replied by Gdizard on topic O-ring size for main jet holder on Mikuni VM 26 ( Z1000 A1 / A2 )
I am trying to make a list of these items for a vm26 fuel mixture screw carb set for a 1000 1977 kz1000, I want to get new mixture screws and o rings and the keyster set that includes the float valve and seat. I have a motor that is 1075 wiseco pistons with a stock camshaft. I am not really sure what size of parts to put in it. I am running at sea level. Can you suggest what size of brass parts to use?
Please Log in or Create an account to join the conversation.
- Gdizard
-
- Offline
- User
-

Registered
- 12/03/1954
Less
More
- Posts: 122
- Thank you received: 21
30 Aug 2025 13:48 #916590
by Gdizard
Replied by Gdizard on topic O-ring size for main jet holder on Mikuni VM 26 ( Z1000 A1 / A2 )
Now I have a 92.5 main jet and a 15 pilot jet
Please Log in or Create an account to join the conversation.
- Gdizard
-
- Offline
- User
-

Registered
- 12/03/1954
Less
More
- Posts: 122
- Thank you received: 21
30 Aug 2025 14:09 #916592
by Gdizard
Replied by Gdizard on topic O-ring size for main jet holder on Mikuni VM 26 ( Z1000 A1 / A2 )
My jet needle is 5CN8 and the clip is on the second groove from the top
Please Log in or Create an account to join the conversation.
- MFP-Joe
-
Topic Author
- Offline
- User
-

Registered
- forever 18 when on my bike
Less
More
- Posts: 500
- Thank you received: 628
30 Aug 2025 23:10 #916597
by MFP-Joe
Greetings, Joe
Replied by MFP-Joe on topic O-ring size for main jet holder on Mikuni VM 26 ( Z1000 A1 / A2 )
I use -009.
Thank you, Ed, for the explicid info in inch and metric sizes !!!
Greetings, Joe
Please Log in or Create an account to join the conversation.
- asphalt900
-
- Offline
- Sustaining Member
-

Registered
Less
More
- Posts: 1724
- Thank you received: 1168
31 Aug 2025 01:04 #916599
by asphalt900
Replied by asphalt900 on topic O-ring size for main jet holder on Mikuni VM 26 ( Z1000 A1 / A2 )
GD are you sure you have the Kawasaki VM's. Those main and pilot sizes are what the Suzuki GS1000 8-valve used, not Kawasaki. Do you have Air and Fuel adjusters? Can't remember but think they also used/shared the same 5CN8 jet needle. Jetting, what exhaust and airbox/individual filters will dictate. Verify they are truly the VM26 Kawasaki version please, check numbers on flange and share please! And i wouldn't recommend changing out those fuel adjust screws unless damaged or pitted.
The following user(s) said Thank You: Gdizard
Please Log in or Create an account to join the conversation.
- Gdizard
-
- Offline
- User
-

Registered
- 12/03/1954
Less
More
- Posts: 122
- Thank you received: 21
31 Aug 2025 08:09 #916612
by Gdizard
Replied by Gdizard on topic O-ring size for main jet holder on Mikuni VM 26 ( Z1000 A1 / A2 )
R6.8 is in front of choke plunger and 299 01 is stamped on the opposite side
Please Log in or Create an account to join the conversation.
- Gdizard
-
- Offline
- User
-

Registered
- 12/03/1954
Less
More
- Posts: 122
- Thank you received: 21
31 Aug 2025 08:11 - 31 Aug 2025 08:12 #916613
by Gdizard
Replied by Gdizard on topic O-ring size for main jet holder on Mikuni VM 26 ( Z1000 A1 / A2 )
Last edit: 31 Aug 2025 08:12 by Gdizard.
Please Log in or Create an account to join the conversation.
- gd4now
-
- Offline
- User
-

Registered
- Denco where did you go?
Less
More
- Posts: 1684
- Thank you received: 678
31 Aug 2025 08:30 #916614
by gd4now
1977 KZ650 B1
Pods and Denco header
OLD KAW OWNERS SMILE ALOT
Replied by gd4now on topic O-ring size for main jet holder on Mikuni VM 26 ( Z1000 A1 / A2 )
I have some info that the 299/01 ID were used stock on the 77 1000 A models. Your current main and pilot jet sizes are smaller than info I have for stock settings. Info I can find is as follows
main jet 107.5
pilot jet 17.5
jet needle 5CN8 set to 3rd slot from top
needle jet O-6 (thats an oh not a zero)
slide cutaway 1.5
pilot screw (fuel) 1 1/4 + or- 1/4
main jet 107.5
pilot jet 17.5
jet needle 5CN8 set to 3rd slot from top
needle jet O-6 (thats an oh not a zero)
slide cutaway 1.5
pilot screw (fuel) 1 1/4 + or- 1/4
1977 KZ650 B1
Pods and Denco header
OLD KAW OWNERS SMILE ALOT
The following user(s) said Thank You: Gdizard
Please Log in or Create an account to join the conversation.
Moderators: Street Fighter LTD
