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.
For stuff that old, I'd suggest trying the sister site:
oldmarineengine.com
Many of the members there are quite fluent with the engines from the first half of the last century....