Hatz 1B20V

Hatz 1B20VThe Hatz 1B20V is a 243 cc, (14.83 cu-in) single-cylinder air-cooled 4-stroke internal combustion diesel engine with a vertical shaft, manufactured by Motorenfabrik Hatz GmbH & Co. KG for general-purpose applications.

This engine has a single cylinder and overhead valves. The Hatz 1B20V engine can be equipped with a recoil starter or electric starter motor 12 or 24 Volts.

A 69.0 mm (2.72 in) cylinder bore and 65.0 mm (2.56 in) piston stroke give the 1B20V engine a total of 243 cc (14.83 cu-in) of displacement. Compression ratio rating is 22:1. It produced from 2.2 HP (1.6 kW) at 1,600 to 4.7 HP (3.5 kW) at 3,600 rpm of maximum output. The torque is 10.5 N·m (1.1 kg·m, 7.7 ft·lb) at 2,500 rpm.

General information

Engine Specifications
Type4-stroke, single cylinder
Displacement243 cm 3 (14.83 cu-in)
Max. horsepower4.7 HP (3.5 kW) at 3,600 rpm
Max. torque (crank PTO)10.5 N·m (1.1 kg·m, 7.7 ft·lb) at 2,500 rpm.
Cooling systemForced-air
Lubricating systemForced spray
Starting systemRecoil starter or electric starter motor
Fuel usedDiesel fuel
Fuel tank capacity3.0 L (0.79 US. gal. 0.66 Imp. gal.)
Fuel consumption
PTO shaft rotationCounterclockwise (from PTO shaft side)

Dimensions and Weight

360 x 399 x 338 mm (12 x 14.2 x 15.8 in)

Length, mm (in)360 (14.2)
Width, mm (in)399 (15.7)
Height, mm (in)338 (13.3)
Dry weight, kg (lb) With recoil starter: 30.0 (66.1)
With electric starter: 34.8 (76.7)

Service Information

Maximum speed3,600 ± 150 rpm
Valve clearance
Intake valve0.20 mm (0.008 in)
Exhaust valve0.20 mm (0.008 in)
Oil system
Oil typeDiesel oil (API: CF/CH-4, ACEA: B3/E4)
Recommended oilSAE 5W-30, 10W-30
Oil capacity0.9 L (0.95 US. qt, 0.79 Imp. qt.)
Oil pressure
Author: Sergei Wers
About: Co-founder and CEO of a multi-brand auto repair shop (engine repair, chassis repair, body repair and painting) for over 15 years. I have been developing internet sites with technical specifications for more than seven years.

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