1974 Ski-Doo Shop Manual, Page 243Get this manual
NOZZLE CHECK VALVE INSTALLATION POSITION
Tabs in line with bore L
s hutter
Applicable onHO-124-A HO-133-A HD-138-A
Appli ca ble onHO-124-A HO-133-A
Ap plicab le onHO-1 38-A
NOZZLE CHECK VALVE PRESS DEPTH SPECIFICATIONS
Bottom of carburetor body
Main Nozzle Nozzle shoulder flush with well floor Not applicable
Bottom of carburetor body
Main Nozzle Discharge Tube Not applicable