John Deere 4230

John Deere 6.6L 6-cyl diesel

Bore × stroke

4.25 in × 4.75 in

Rated speed

2,200 rpm

Compression

16.2:1

Cooling

liquid-cooled inline horizontal-shaft

Firing order

1-5-3-6-2-4

John Deere 5.9L 6-cyl gasoline

Bore × stroke

4.25 in × 4.25 in

Rated speed

2,200 rpm

Cooling

liquid-cooled

Firing order

1-5-3-6-2-4

Notes

The gasoline engine was only available during the 1973 model year for the Deere 4230.

John Deere Syncro-Range: Four shift stations with two gears each, plus reverse gear in the first two shift stations. Tractor must be stopped, and clutch used, to shift between stations. Once in a shift station the tractor may be shifted on the move, using the clutch, between the gears in that station.

John Deere Quad-Range: Four gears (1-4) in four ranges (A-D). Power shift between gears 1-2 and 3-4 in each range with a synchronized shift (using clutch) between 2-3. Tractor must be stopped to shift range.

Syncro-Range Creeper: Optional creeper range adds additional speeds to the first five gears of the Syncro-Range transmission. An interlock prevents shifting into gears 6 through 8 while the creeper is engaged.