The Hatz 1B40 is a 462 cc, (28.19 cu-in) single-cylinder air-cooled 4-stroke internal combustion diesel engine with a horizontal shaft, manufactured by Motorenfabrik Hatz GmbH & Co. KG for general-purpose applications.
This engine has a single-cylinder, overhead valves, and direct injection fuel system. The Hatz 1B40 engine can be equipped with a recoil starter or electric starter motor 12 or 24 Volts.
An 88.0 mm (3.46 in) cylinder bore and 76.0 mm (2.99 in) piston stroke give the 1B40 engine a total of 462 cc, (28.19 cu-in) of displacement. Compression ratio rating is 20.5:1. It produced from 5.2 PS (3.8 kW; 5.1 HP) at 1,500 rpm to 10.2 PS (7.5 kW; 10.1 HP) at 3,600 rpm of maximum output. The torque is 24.9 N·m (2.5 kg·m, 18.4 ft·lb) at 2,300 rpm.
General information
| Engine Specifications | |
| Model | 1B40 |
| Type | 4-stroke, single cylinder |
| Displacement | 462 cm 3 (28.19 cu-in) |
| Max. horsepower | 10.2 PS (7.5 kW; 10.1 HP) at 3,600 rpm |
| Max. torque (crank PTO) | 24.9 N·m (2.5 kg·m, 18.4 ft·lb) at 2,300 rpm |
| Cooling system | Forced-air |
| Lubricating system | Forced spray |
| Starting system | Recoil starter or Electric starter motor |
| Fuel used | Diesel fuel |
| Fuel tank capacity | 5.0 L (1.32 US. gal. 1.1 Imp. gal.) |
| Fuel consumption | – |
| PTO shaft rotation | Counterclockwise (from PTO shaft side) |
Dimensions and Weight
| 1B40 | |
| Length, mm (in) | 348 (13.7) |
| Width, mm (in) | 392 (15.4) |
| Height, mm (in) | 480 (18.9) |
| Dry weight, kg (lb) |
With recoil starter: 48.0 (105.8) With electric starter: 53.3 (115.7) |
Service Information
| Engine | |
| Maximum speed | 3,600 ± 150 rpm |
| Valve clearance | |
| Intake valve | 0.10 mm (0.004 in) |
| Exhaust valve | 0.10 mm (0.004 in) |
| Oil system | |
| Oil type |
With diesel oxidation catalyst (DOC): ACEA E6 Without diesel oxidation catalyst (DOC): CF/CH-4, ACEA: B3/E4 |
| Recommended oil | SAE 5W-30, 10W-30 |
| Oil capacity | 1.5 L (1.59 US. qt, 1.32 Imp. qt.) |
| Oil pressure | – |
I want to buy a Hatz Diesel Engine.
But, I wonder the following properties of Hatz Diesel engine (1B40):
1) what is the number of injector hole?
2) what is the diameter of injector hole?
3) What is the start of injection timing?
RFQ on below product
Hatz Diesel 1-B-40 engine
Will need the pressure washer with pull cord design and complete with spark arrestor
What hole hatz size put your pickle style injector in?
I have a 1B40 ran about 35 hours then quit. Impossible to find parts. TYPICAL GERMAN nonsense. Been searching for output shaft size. You’d think that would be easily found on a spec sheet. Nope. Don’t waste you money. If you need a repair. Good luck!