Do you have a question about the Hatz 2-4L31 and is the answer not in the manual?
Detailed diagrams labeling engine components from various views.
Explanation of information found on the engine's type plate.
Diagram and description of the engine's lubricating oil system.
Specifications for L30 engine variants.
Specifications for L31, M31, L40, M40 engine variants.
Specifications for L41, M41 engine variants.
List of sealants and adhesives with code letters for use in manual.
Listing and identification of specialized tools for engine maintenance.
Detailed information on the fuel delivery pump.
Procedures for removing and installing the silencer (muffler).
Instructions for using and maintaining the crank handle.
General instructions and checks for the engine's electrical system.
Procedures for servicing air-cooled engine oil coolers.
Procedures for servicing water-cooled engine oil coolers.
Details on the engine shutdown solenoid mechanism.
Instructions for assembling the connecting housing.
Procedures for removing and installing the water pump.
Instructions for checking and installing the thermostat.
Procedures for removing/installing balancing weights on 2L/3L engines.
Steps for dismantling the crankshaft assembly.
Procedures for camshaft and valve gear removal and installation.
Instructions for checking and assembling connecting rods.
Procedures for checking cylinder wear and suitability for reuse.
Procedures for dismantling and inspecting pistons/cylinders in water-cooled engines.
Procedures for dismantling the cylinder head on air-cooled engines.
Steps for overhauling the cylinder head on air-cooled engines.
Procedures for dismantling the cylinder head on water-cooled engines.
Procedures for dismantling and assembling the engine oil pump.
Procedures for dismantling the timing cover without hydraulic pump drive.
Dismantling and assembly of the hydraulic extra-fuel device.
Procedures for removing and installing the fan housing.
Procedures for checking injection pumps and performing functional tests.
Procedures for dismantling and assembling the flywheel.
Procedures for removing and installing the engine shutdown device.
Procedures for dismantling and cleaning the engine air cleaner.
Procedures for dismantling and inspecting the crankcase breather.
Procedures for dismantling the speed control with PFR 1K 80 injection pump.
Procedures for dismantling the speed control.
Procedures for dismantling the engine enclosure.
General requirements and values for tightening threaded connections in Nm.
Repair specifications for cylinder head components.
Tables for engine types, injection pumps, and injector specifications.
Tables detailing governor springs and weights by engine type and speed.
Table for engine oil sump capacity and dipstick markings.
List of electrical components and their designations in circuit diagrams.
Table mapping terminal numbers to component designations for wiring.
Electrical circuit diagrams for 12V and 24V systems with various functions.
Troubleshooting guide for electrical system malfunctions and remedies.