Where did these carbs. came from ?

I got these used 28mm pumpers I purchased recently really well cleaned. The seller said they were from a 79' KZ1000 ? Main jet size is #110 and Pilot jet size is #15. Jets are original to the carbs. Can't seem to find out anywhere where these carb. were mounted on what model of KZ ? Anybody have any ideas ?

79-80 mark 11

80 Z1R (D3) came with 28mm pumpers as well.

I thought the z1r had 28 mm but no pumper.

peter1958 wrote: I thought the z1r had 28 mm but no pumper.

The '78 Z1R had 28mm without pumps. The '80 Z1R had 28mm with pumps.

The 79=80 shaft KZ1000 had them too. People like em, but they are PIA to clean up. The check valves, balls and spring clamps are hard to replace and deal with. Could always salvage bowls and ditch the pumper. Rejet required. The pump is to accommodate lean idle emissions. It just dumps fuel on initial accel. R

kzdcw wrote: I got these used 28mm pumpers I purchased recently really well cleaned. The seller said they were from a 79' KZ1000 ? Main jet size is #110 and Pilot jet size is #15. Jets are original to the carbs. Can't seem to find out anywhere where these carb. were mounted on what model of KZ ? Anybody have any ideas ?

"79 KZ1000st


.

80 ltd as well