Carburettor specifications for Honda CB350
| CB350 Engine # 1000001 1045164 | CB350 Engine # 1045165 1065278 | CB350 Engine # 1065279 and later | |
| Setting Mark | 350A | 3-C | 3-D |
| Venturi Bore | 28mm | 28mm | 28mm |
| Main Jet Primary | #60 | #70 | #70 |
| Main Jet Secondary | #115 | #110 | #105 |
| Air Jet Primary | #50 | #150 | #150 |
| Air Jet Secondary | #50 | #50 | #50 |
| Pilot Air Jet | #90 | #90 | #90 |
| Needle Jet | |||
| Slide Cutaway | |||
| Pilot Jet | #38 | #35 | #35 |
| Pilot Screw Turns | 3/4 - 1/8 | 1 - 1/8 | 1 - 1/8 |
| Float Level (mm/inch) | 19 / 0.75 | 21 / 0.83 | 26 / 1.05 |
