1976 Mercury 500 Thunderbolt. This version put out nearly 40 horsepower while being rated at 25. 1976 mercury 50050 hp tuning manual.
We stock parts from 1940 to the present. Founded in 1939 by the talented engineer-businessman Carl Kiekhaefer the Mercury brand of boating. Models and Years Covered in Repair Manuals.
WIRING HARNESS Internal Wiring Harness fits late 1977 through 1979 Merc 200 20hp models with Ser 4709593 thru 5606491.
It does need an impeller but motor runs fine. Quality props from Michigan Wheel Solas Turning Point Stiletto Quicksilver. Mercury is more of a leisure boating brand and Mariner is more a fishing-centric nameplate. So if your serial number is 0 1234567 you would use only the 1234567 part of it when looking at the chart below.
