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    Lower unit swap

    I have a working 1982 70hp 3 cyl powerhead without lower unit i also have a rough running 50hp 4 cyl manual start same sort of age complete with lower unit type r drive? (with preload pin) Can i use this lower unit as a straight swap for the 70, will it accept the preload pin type drive shaft...
  2. A

    Serial number and year help please

    Trying to find year for 70hp 3cyl merc Says thunderbolt on casing, electric start In the UK Checked all the reccomended places these are the numbers i can find on the engine 73218 1593-7511 7852 9276-2800 been trying to find out for ages as am servicing lower unit at present, high pressure...
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