Production | |
| Manufacturer | J.I. Case |
| Type | Garden tractor |
| Factory | Winneconne, Wisconsin, USA |
Mechanical | |
| Chassis | 4x2 2WD |
| Steering | manual |
| Brakes | mechanical band |
| Cab | Open operator station. |
Capacity | |
| Fuel | 3 gal 11.4 L |
| Hydraulic system | 1.6 gal 6.1 L |
Hydraulics | |
| Type | open center |
| Capacity | 1.6 gal 6.1 L |
| Valves | 2 |
| Pump flow | 8 gpm 30.3 lpm |
446 Serial Numbers | |
| 1972 | 9668001 |
| 1973 | 9678031 |
| 1974 | 9694673 |
| 1975 | 9713265 |
| 1976 | 9727857 |
| 1977 | 9740617 |
| 1978 | 9754759 |
| 1979 | 9767590 |
| 1980 | 9785820 |
| 1981 | 14009950 |
| 1982 | 14025407 |
| 1983 | 14040936 |
| 1984 | 14060091 |
| 1985 | 14073621 |
| 1986 | 14095530 |
| 1987 | 1412151 |
| 1988 | 14112874 |
446 Serial Location | |
| Serial number plate on instrument panel. |
Electrical | |
| Ground | negative |
| Charging amps | 15 |
| Battery volts | 12 |
| Battery AH | 24 |
Engine Detail | |
| Onan B43M | |
| gasoline | |
| 2-cylinder | |
| air-cooled | |
| Displacement | 709 cc 43.3 ci |
| Bore/Stroke | 3.25x2.625 inches 83 x 67 mm |
| Power | 16 hp 11.9 kW |
| Compression | 7:1 |
| Rated RPM | 3600 |
| Starter volts | 12 |
| Sparkplug | Champion RH18Y |
| Sparkplug gap | 0.025 inches 0.635 mm |
| Point gap | 0.021 inches 0.533 mm |
| Intake valve clearance | 0.005 inches*Cold 0.127 mm |
| Exhaust valve clearance | 0.013 inches*Cold 0.330 mm |
Transmission | |
| Transmission | HY-Drive |
| Type | hydraulic drive |
| Gears | infinite forward and reverse (2-range) |
| The HY-Drive uses a fixed-displacement hydraulic pump to power a two-speed transaxle. | |
Dimensions | |
| Wheelbase | 48 inches 121 cm |
| Length | 72 inches 182 cm |
| Width | 41 inches 104 cm |
| Height (steering wheel) | 43.3 inches 109 cm |
| Height (hood) | 38.5 inches 97 cm |
| Shiping weight | 770 lbs 349 kg |
| Ground clearance | 11 inches 27 cm |
| Front tread | 33.5 inches 85 cm |
| Rear tread | 31.5 inches 80 cm |