Jacobsen lawn tractors
Jacobsen Chief 1000
The Jacobsen Chief 1000 is a garden tractor produced from 1964 to 1971 in Racine, Wisconsin, USA. It features a 10 hp Kohler K241 390cc 1-cylinder gasoline engine with air-cooled horizontal shaft, and a choice of 3-speed or 4-speed Peerless belt-driven gear transmissions with manual idler pulley clutch. The tractor has two-wheel drive, manual steering, mechanical band brakes, and an open operator station. It includes a mid PTO with manual clutch and pulley type. Dimensions include a 42-inch wheelbase, 61-inch length, and 33-inch width, with various tire options. Attachments available include multiple mid-mount mower decks, snow blowers, blades, and a front-end loader. Electrical system is 12 volts with negative ground. Variants include gear and hydrostatic transmission models.
Power-
Founded-
ModelChief 1000
Technical Specifications
Detailed specifications and technical data for Jacobsen Chief 1000
Engine
| Type | gasoline |
|---|---|
| Model | Kohler K241 |
| Cooling | air-cooled horizontal-shaft |
| Starter | electric |
| Cylinders | 1-cylinder |
| Fuel tank | 1.25 gal (4.7 L) |
| Rated RPM | 3600 |
| Air cleaner | dry |
| Bore/Stroke | 3.25x2.875 inches (83 x 73 mm) |
| Displacement | 390 cc (23.85 ci) |
| Oil capacity | 2.5 qts (2.4 L) |
| Power (gross) | 10 hp (7.5 kW) |
| Starter volts | 12 |
Overview
| Drive | Two-wheel drive |
|---|---|
| Brakes | Mechanical band brakes |
| Built in | Racine, Wisconsin, USA |
| Category | Garden tractor |
| Steering | Manual steering |
| Operator station | Open operator station |
| Production years | 1964 - 1971 |
Variants
| Chief 1000 | gear |
|---|---|
| Super Chief 1000 | hydrostatic |
| Chief-O-Matic 1000 | hydrostatic |
Electrical
| Ground | negative |
|---|---|
| Battery volts | 12 |
Attachments
| 42" Blade | Jacobsen, front-mount, 42 inches width (106 cm) |
|---|---|
| Additional | A belt-driven 32-inch tiller, model 59713, was available. |
| 36" Snow blower | Jacobsen 597XX, 36 inches width (91 cm), two-stage, front-mount, manual-lift |
| 38" Snow blower | Jacobsen 596XX, 38 inches width (96 cm), single-stage, front-mount, manual-lift |
| Danco JC 600 Loader | 300 lbs lift (full at pin) (136 kg), 52 inches clearance (level) (132 cm), Bucket width: 34 inches (86 cm) |
| 36" mid-mount mower deck | Jacobsen 59730, 36 inches (91 cm), 2-blade, manual lift, left-discharge, Cut height: 1.5 to 4 inch (3 to 10 cm) |
| 42" mid-mount mower deck | Jacobsen 59736, 42 inches (106 cm), 3-blade, manual lift, right-discharge, Cut height: 1.25 to 3 inch (3 to 7 cm) |
| 48" mid-mount mower deck | Jacobsen 59782, 48 inches (121 cm), 3-blade, manual lift, right-discharge |
Transmission
| Notes (3-speed) | Three-speed transmission used on the Chief 1000 in 1964 and 1965. |
|---|---|
| Notes (4-speed) | The four-speed transmission was introduced for the 1966 model year, Chief 1000 model 53037. |
| Transmission options | 3-speed gear, 4-speed gear |
| Transmission (3-speed) | Peerless, belt-driven gear, 3 forward and 1 reverse, manual idler pulley clutch |
| Transmission (4-speed) | Peerless 2300, belt-driven gear, 4 forward and 1 reverse, manual idler pulley clutch |
Serial Numbers
| 1964 | 1601 (53035) |
|---|---|
| 1965 | 1601 (53036) |
| 1966 | 1601 (53037) |
| 1967 | 1601 (53039) |
| 1968 | 6430 (53039) |
| 1969 | 1601 (53077) |
| 1970 | 5126 (53077) |
| 1971 | 10226 (53077) |
Dimensions & Tires
| Width | 33 inches (83 cm) |
|---|---|
| Length | 61 inches (154 cm) |
| Wheelbase | 42 inches (106 cm) |
| Rear tread | 31.5 inches (80 cm) |
| Front tread | 30 inches (76 cm) |
| Height (hood) | 34.5 inches (87 cm) |
| Rear tire options | 22x6-12, 22x8-12 |
| Front tire options | 16x4.80-8, 16x6.50-8 |
| Clearance (rear axle) | 6.25 inches (15 cm) |
| Clearance (front axle) | 8.75 inches (22 cm) |
| Height (steering wheel) | 39 inches (99 cm) |
| Ground clearance (frame) | 11.75 inches (29 cm) |
Power Take-off (PTO)
| Clutch | manual |
|---|---|
| PTO type | independent |
| Mid PTO Type | pulley |
| PTO location | Mid PTO |
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