Fuel tank:1.25 gal (4.7 L)
Details 1966:Wisconsin TR-10D, gasoline, 1-cylinder, air-cooled, displacement 331 cc (20.2 ci), bore/stroke 3.125x2.625 inches (79 x 67 mm), power 10 hp (7.5 kW), air cleaner dry, rated RPM 3800, starter volts 12, oil capacity 1 qts (0.9 L), oil change 50 h, sparkplug gap 0.025 inches (0.635 mm)
Engine options:10HP Wisconsin 331cc 1-cyl gasoline, 10HP Wisconsin 361cc 1-cyl gasoline
Details 1967-1969:Wisconsin TRA-10D, gasoline, 1-cylinder, air-cooled, displacement 361 cc (22.05 ci), bore/stroke 3.125x2.875 inches (79 x 73 mm), power 10 hp (7.5 kW), air cleaner dry, rated RPM 3800, starter volts 12, oil capacity 1 qts (0.9 L), oil change 50 h, sparkplug gap 0.025 inches (0.635 mm)