mark 20 help

[roger-s]

i have owned a mark 20 for 30 odd years and it has been sitting for most of that time,years ago i had 1 spark plug with aluminum on it when it quit.i have
since bought a spare powerhead for it.my question is the original had a single fuel line feed while the other has two,also the spare power head has a lever on the right side of the cowl which the original did not have,any help out there thanks

 

[Chinewalker]

Re: mark 20 help

The Mark 20 originally (when new) had a dual line pressurized fuel system. It was not hard to modify the fuel system to that from a Mark 25, which ran a fuel pump (single line).

There was a remote adapter kit that could be added to the Mark 20 that would include a lever on the side for throttle hook-ups. A lever with a ball on the end may mean you have a Mark 20H (racing) powerhead - very rare! It would be noticeable in that it would have a substantially larger carburetor opening.

- Scott

 

[roger-s]

Re: mark 20 help

thankyou for your help will check it this weekend if it is a 20h would that power head fit on a regular mark 20 lower end