Carb Settings and Notes for '81-'83 Yamaha XV750 Virago
49 States
Hitachi Type HSC40
Carb ID 4X7 and 20X
Main Jet - 122 Rear 122 Front
Idle Jet - 41
Fuel Passage Plug - No
Jet Needle - Y23 (Rear) Y22 (Front)
Needle Jet -
Float Height - 15.5mm
Air Screw - 2.5 Turn
On this bike cylinder #1 is the rear cylinder.
Carb Settings and Notes for '81-'83 Yamaha XV920 Virago
49 States
Hitachi Type HSC40
Carb ID 5H1 and 10L-00
Main Jet - 126 Rear 128 Front
Idle Jet - 41
Fuel Passage Plug - No
Jet Needle - Y25 (Rear) Y24 (Front)
Needle Jet -
Float Height - 15.5mm
Air Screw - 2.5 Turn
(V Shaped bowl)
On this bike cylinder #1 is the rear cylinder.
Carb Settings and Notes for '83 Yamaha XV920 Virago
49 States
Hitachi Type HSC40
Carb ID 10L-01 and 27Y
Main Jet - 126 Rear 128 Front
Idle Jet - 40 (Press-in)
Fuel Passage Plug - No
Jet Needle - Y33 (Rear) Y31 (Front)
Needle Jet -
Float Height - 15.5mm
Air Screw - 2.5 Turn
(Non V Shaped bowl)
On this bike cylinder #1 is the rear cylinder.