Waterloo Boy R

Waterloo Gasoline Engine Company 5.4L 2-cyl kerosene

Bore × stroke

5.5 in × 7 in

Rated speed

700 rpm

Compression

3.91:1

Cooling

liquid-cooled

Firing order

1-2

Notes

Original engine, used until 1915, Waterloo Boy R serial number 1114 (RA to RD). This horizontal engine design was the basis for John Deere two-cylinder tractor engines used for the following forty-six years.

Waterloo Gasoline Engine Company 6.5L 2-cyl kerosene

Bore × stroke

6 in × 7 in

Rated speed

750 rpm

Compression

3.91:1

Cooling

liquid-cooled

Firing order

1-2

Notes

The six-inch bore engine was used on the Waterloo Boy R from 1915 until 1917 (RE to RK), serial number 6728. A detachable cylinder head was introduced at serial number 1610 (RH).

Waterloo Gasoline Engine Company 7.6L 2-cyl kerosene

Bore × stroke

6.5 in × 7 in

Rated speed

750 rpm

Compression

3.91:1

Cooling

liquid-cooled

Firing order

1-2

Notes

The final Waterloo Boy model R engine, used from 1917 to the end of production (RM). This engine size continued to be used in the Waterloo Boy model N and the early John Deere model D.

1-speed unsynchronized gear: Left-hand lever controls forward and reverse gear selection. Foot-operated clutch.