Massey Specifications

1969

Model 297

Engine-JLO Model-L297 Displ-296cc Carb-Tillotson Model-HR33A Sprocket Ratio-15:46 Chain Size-35-2 Clutch-Salsbury Belt#-519599

Model 280

Engine-JLO Model-L380 Displ-372cc Carb-Tillotson Model-HD19A Sprocket Ratio-17:46 Chain Size-35-2

Clutch-Salsbury Belt#-520865

1970

Model 300S

Engine-JLO Model-L295 Displ-292cc Carb-Tillotson Model-HR33A Sprocket Ratio-19:46 Chain Size-35-2

Clutch-Drummond Shaft Center-11 9/16 Belt#-521965

Model 350SS

Engine-JLO Model-L340 Displ-336cc Carb-Tillotson Model-HR33A Sprocket Ratio-19:46 Chain Size-35-2

Clutch-St.Law. Shaft Center-11 9/16 Belt#-521965

Model 500SST

Engine-JLO Model-LR440-2 Displ-434cc Carb-Tillotson Model-HD19A Sprocket Ratio-23:46 Chain Size-35-2

Clutch-St.Law. Shaft Center-11 9/16 Belt#-521965

1971

Model 300S

Engine-JLO Model-L295 Displ-292cc Carb-Tillotson Model-HR54A Sprocket Ratio-19:46 Chain Size-35-2

Clutch-Drummond Shaft Center-11 9/16 Belt #-521695M1

Model 350SS

Engine-JLO Model-L340 Displ-336cc Carb-Tillotson Model-HR56A Sprocket Ratio-19:46 Chain Size-35-2

Clutch-Drummond Shaft Center-11 9/19 Belt#-521695M1

Model 400SST

Engine-JLO Model-LR340/2 Displ-339cc Carb-Tillotson Model-HD49A Sprocket Ratio-23:46 Chain Size-35-2

Clutch-Drummond Shaft Center-11 9/16 Belt#-52169M1

Model 500SST

Engine-JLO Model-LR399/2 Displ-398cc Carb-Tillotson Model-HD49A Sprocket Ratio-23:46 Chain Size-35-2

Clutch-Drummond Shaft Center-11 9/16 Belt#-52169M1

Model Formula I

Engine-JLO Model-LR399/2 Displ-398cc Carb-Tillotson Model-HD49A Sprocket Ratio-23:46 Chain Size-35-2

Clutch-Drummond Shaft Center-11 9/16 Belt#-52169M1

1972

Model 300S

Engine-JLO Model-L295 Displ-292cc Carb-Tillotson Model-HR54B Sprocket Ratio-23:46 Chain Size-35-2

Clutch-Own Shaft Center-11 3/32 Belt#-52169M1

Model 500SST