Marine Engine Collection of Mystic Seaport


Johnson Motor Co. A-75


Engine Builder: Johnson Motor Co., Waukegan, IL
Model: A-75
Make: Johnson Motor Co.
Inboard/Outboard: Outboard
Engine Type: Gasoline
Production Date: 1925-1926 ?
Engine Design: Two-Stroke
Overall Condition: Fair
Rebuilt/Restored: Untouched
Horsepower: 4.5
Cylinders: 2
Bore:
Stoke:
Coolant:
Accession:1990.140

Remarks: Cleaned , degreased, and oil placed in cylinders by MSM Vol. Gary Mower, on 24 July 1993. Screw missing out of starter/timer. As of 2008, engine condition is only "Fair", since it appears to be frozen. Additional fitting attached to frame by wire, likely used to flush the engine. Actual production date may be later than the 1925-1926 date indicated by the donar. Peter Hunn's "The Old Outboard Book" has the Johnson 4.5 HP, Model A-75 as being produced only in 1935.


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1990.140-a.JPG
1990.140-b.JPG
1990.140-c.JPG
1990.140-d.JPG