Hatz 1B50

Hatz 1B50The Hatz 1B50 is a 517 cc, (31.5 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 1B50 engine can be equipped with a recoil starter or electric starter motor 12 or 24 Volts.

A 93.0 mm (3.66 in) cylinder bore and 76.0 mm (2.99 in) piston stroke give the 1B50 engine a total of 517 cc, (31.5 cu-in) of displacement. The compression ratio is 20.5:1. It produced from 55.7 PS (4.2 kW; 5.6 HP) at 1,500 rpm to 11.6 PS (8.5 kW; 11.4 HP) at 3,600 rpm of maximum output. The torque is 27.4 N·m (2.8 kg·m, 20.2 ft·lb) at 2,500 rpm.

General information

Engine Specifications
Model1B50
Type4-stroke, single cylinder
Displacement517 cm 3 (31.5 cu-in)
Max. horsepower11.6 PS (8.5 kW; 11.4 HP) at 3,600 rpm
Max. torque (crank PTO)27.4 N·m (2.8 kg·m, 20.2 ft·lb) at 2,500 rpm
Cooling systemForced-air
Lubricating systemForced spray
Starting systemRecoil or electric starter motor
Fuel usedDiesel fuel
Fuel tank capacity5.0 L (1.32 US. gal. 1.1 Imp. gal.)
Fuel consumption
PTO shaft rotationCounterclockwise (from PTO shaft side)

Dimensions and Weight

1B50
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: 51.2 (112.9)
With electric starter: 56.5 (124.6)

Service Information

Engine
Maximum speed3,600 ± 150 rpm
Valve clearance
Intake valve0.10 mm (0.004 in)
Exhaust valve0.10 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 oilSAE 5W-30, 10W-30
Oil capacity1.5 L (1.59 US. qt, 1.32 Imp. qt.)
Oil pressure
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