Hatz 1B40

Hatz 1B40The 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

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

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
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  1. 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?

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