For Quantum 45, Quantum 50, Quantum 55, Quantum XM55, Quantum XTE 40, Quantum XTE 50, Quantum 625, Quantum 675 series. Quantum models with manual choke. 1x carburetor. Gutbrod: MH404, MH454B, HB46, HB48, HB48L, HB48RL, HB48LS (various Superior Class models).
