MarineEngine.com does not offer troubleshooting assistance or repair advice by email or by telephone.
You are invited to join our public Boat Repair Forum to seek assistance from other members.
You may also visit the Boat Motor Manuals section of our site to obtain a service manual.
serial # of your motor ?
Its for the older models that dont have the metal reed valves in them.(The diaphragm has reed valves as part of, first pic here)
Second pic is the later type.[/QU
Yes the later carbs have a plastic spacer with check valves built into it.