O.S. Engines 50SX - Manual (Page 10)

Inlet Holder
Plug Screw (50SX/91FX)
Fuel Inlet
Needle-Valve
Assembly
Needle Extension
Inlet Holder
Fuel Inlet
Needle-Valve
Assembly
45mm
Fuel Inlet
Needle-Valve
Assembly
Plug Screw (50SX/91FX)
Fuel Inlet
Needle-Valve
Assembly
Needle Extension
45mm
61FX
50SX/91FX
Use hexagon-head brass inlet holder (61FX) or
plug screw (50SX/91FX) to blank off side boss
vacated by needle- valve assembly. 4.
9