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+--- Thread: Gen 1 1000 Carb O'rings dimensions? (/showthread.php?tid=83773)
Gen 1 1000 Carb O'rings dimensions? - Gaz66 - 09-05-25
Hi.
Any chance anybody has saved info carb O'ring dimensions?
Can't find anything on forum, seem to remember admin saved it as a sticky, but no sticky info seems to be visible on carbs now forum's been updated.
Rgds
Gaz ?
RE: Gen 1 1000 Carb O'rings dimensions? - PieEater - 09-05-25
Information is in the FAQ in the Carb section;
With age the rubber O rings in the carbs can deteriorate leading to a number of issues with the bike running roughly especially at lower revs / speeds. Given the age of the OEM O rings it is recommended to replace these using Nitrile (Buna-N) or Viton® (FKM) O-Rings, Fluoroelastomer Seal type FKM 75 in the following sizes;
- Float needle valve: 7.5mm ID x 1.5mm cross section x 10.5mm OD
- Main Jet : 5.5mm ID x 1.5mm cross section x 8.5mm OD
- Idle air screw: 3.0mm ID x 1.0mm cross section x 5.0mm OD
- Under Diaphragm cap 2.5mm ID x 1.5mm cross section x 5.5mm OD
- Idle air screw O-ring is a proprietary size of 2.70 I.D. x 1.13mm
RE: Gen 1 1000 Carb O'rings dimensions? - Trebus - 09-05-25
Attached info, from unfazed.
RE: Gen 1 1000 Carb O'rings dimensions? - Gaz66 - 09-05-25
(09-05-25, 10:21 PM)Trebus Wrote: Attached info, from unfazed.Thanks
(09-05-25, 10:02 PM)PieEater Wrote: Information is in the FAQ in the Carb section;
With age the rubber O rings in the carbs can deteriorate leading to a number of issues with the bike running roughly especially at lower revs / speeds. Given the age of the OEM O rings it is recommended to replace these using Nitrile (Buna-N) or Viton® (FKM) O-Rings, Fluoroelastomer Seal type FKM 75 in the following sizes;
- Float needle valve: 7.5mm ID x 1.5mm cross section x 10.5mm OD
- Main Jet : 5.5mm ID x 1.5mm cross section x 8.5mm OD
- Idle air screw: 3.0mm ID x 1.0mm cross section x 5.0mm OD
- Under Diaphragm cap 2.5mm ID x 1.5mm cross section x 5.5mm OD
- Idle air screw O-ring is a proprietary size of 2.70 I.D. x 1.13mm
Nice 1, appreciated