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  1. M

    1989 Mercury Classic Fifty 45hp Timing Screws Identification

    So for the primary pickup timing, set it at the correct timing spec when the carb is just barely opening? And use the full throttle stop screw? Then use the WOT Screw and set to 32 degrees? I think I’ve got it… some confirmation would be awesome though! Thanks for the help
  2. M

    1989 Mercury Classic Fifty 45hp Timing Screws Identification

    This is what I’m working with this far. I did find the specs for primary and WOT (7-9 deg, 32 deg BTDC) at the back of the manual, I guess I’m just confused on the wording of the manual. Thanks for being so helpful too, I know this stuff might seem pretty elementary to some folks here. Im...
  3. M

    1989 Mercury Classic Fifty 45hp Timing Screws Identification

  4. M

    1989 Mercury Classic Fifty 45hp Timing Screws Identification

    Unfortunately no. The only one I’ve found has the worst pictures I’ve ever seen and very little identification diagrams. I’m really basing this stuff off of what I found in that manual plus what I’ve found here. That’s it really in a nutshell. I guess I’m just confused as to what the “pickup”...
  5. M

    1989 Mercury Classic Fifty 45hp Timing Screws Identification

    My next question is how to time this thing…. Set TDC on the indicator pointer Set the primary pickup to fire at 7-9 deg BTDC by adjusting the max advance screw (cranking motor + timing light) Set WOT to fire at 32 deg BTDC using full throttle screw (cranking motor + timing light) Forgive the...
  6. M

    1989 Mercury Classic Fifty 45hp Timing Screws Identification

    My current guess is 1. Max advance, 2. Full throttle, 3. Idle stop? Any insight would be greatly appreciated! Thanks
  7. M

    1989 Mercury Classic Fifty 45hp Timing Screws Identification

    Hello everyone My buddy and I finally made a boat purchase and are having some issues with it. We took it out the first day and it was bogging and had an issue with a rotten fuel line in the tank. Fixed that, rebuilt the carbs & fuel pump, verified spark on each plug. Figured that would do the...
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