Rob's Carburetor Rebuilds

Carb Settings and Notes for '76-'79 Kawasaki KZ750


The fact is, the numbers on these carbs are typically impossible to read and they were made both in US and Japanese factories for the US market. So, below i simply listed the specific carb settings for the US made 249 and the Japanese made 249. Same with the 1187


Mikuni Type First Gen BS38
Carb ID 249 US Made
Main Jet - 125
Idle Jet - 45
Fuel Passage Plug - No
Jet Needle - 4HL12-3 Springed type
Needle Jet - Z2
Float Height - 24mm +- 1mm
Air Screw - 1.5 Turn


Mikuni Type First Gen BS38
Carb ID 249 Japanese Made (For US market)
Main Jet - 125
Idle Jet - 45
Fuel Passage Plug - No
Jet Needle - 49N19-4 Non-Springed
Needle Jet - Z4
Float Height - 24mm +- 1mm
Air Screw - 1.5 Turn

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Carb Settings and Notes for '80 Kawasaki KZ750G1 LTD

Mikuni Type First Gen BS38
Carb ID 1187 Japanese made for US market
Main Jet - 125
Idle Jet - 45
Fuel Passage Plug - No
Jet Needle - 49N19-4 Non-Springed
Needle Jet - Z4
Float Height - 24mm +- 1mm
Air Screw - 1.5 Turn


Carb Settings and Notes for '80 Kawasaki KZ750G1 LTD

Mikuni Type First Gen BS38
Carb ID 1187 US Made
Main Jet - 125
Idle Jet - 45
Fuel Passage Plug - No
Jet Needle - 4HL14-3 Springed type
Needle Jet - Z3
Float Height - 24mm +- 1mm
Air Screw - 1.5 Turn