Welcome to the new Wizard Outboard Forum.
A .PDF file of a free manual is available: Go to: http://search.ebscohost.com/ Log in with: User ID: marshall password : public -----Go under the Small Engine Repair Reference Center (look for the wrench), then Marine/Boat Motors....you will click on Mercury in the 2nd column and then click on 4 Cylinder models (1955-1965).