Hatz 2M41Z User Manual

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CREATING POWER SOLUTIONS.

OPERATOR’S MANUAL

Diesel engine

Hatz Diesel

2L41C | 2M41 | 2M41Z

www.hatz-diesel.com

INCLUDES SUPPLEMENTAL INFORMATION TO

THE OWNER’S MANUAL FOR MODEL YEAR

2019 EPA CERTIFIED NONROAD COMPRES-

SION-IGNITION ENGINES.

INCLUDES SUPPLEMENTAL INFORMATION FOR

THE USE OF EPA CERTIFIED ENGINES WITHIN

CALIFORNIA.

Table of Contents

Other manuals for Hatz 2M41Z

Operator's Manual110 pages

Questions and Answers:

E
Erin GainesAug 16, 2025
What to do if Hatz 2M41Z Engine does not start?
- C
  cheryl43Aug 16, 2025
  If your Hatz Engine doesn't start, consider these possible causes and solutions: * Ensure the speed control lever is correctly positioned. Depending on the situation, set it to the 1/2 start or max START position and ensure it remains fixed. * If there's no fuel at the injection pump, refuel. Also, try activating the manual lever of the fuel pump. * Systematically check the entire fuel supply system, including the fuel feed line to the engine, the fuel prefilter, and the main fuel filter. * Verify the function of the feed pump. If difficulties persist after extended periods of disuse, and activating the feed pump helps, verify the fuel system's sizing. If the injection nozzle isn't working, contact Hatz service.
C
craigtaylorAug 19, 2025
What to do if my Hatz 2M41Z does not start?
- D
  Debbie HansonAug 19, 2025
  If your Hatz Engine doesn't start, make sure there is fuel at the injection pump by refueling. Also, activate the feed pump until you hear the fuel flowing back through the return line into the fuel tank. Depending on the possibility or requirement, place the lever in either the 1/2 start or max. START position and ensure the lever is fixed in this position. Systematically check the entire fuel supply: Check the feed line to the engine, the fuel prefilter, the fuel filter, and the function of the feed pump.
T
Tiffany WilsonAug 22, 2025
Why is my Hatz Engine losing power and speed?
- G
  George AllenAug 22, 2025
  If your Hatz Engine is losing power and speed, here are a few potential reasons: * If the speed adjustment lever won't stay put, try blocking it in the desired position. * Check the fuel supply. Make sure you haven't run out of fuel. Add fuel if needed. * A clogged fuel prefilter or main fuel filter can also cause this issue, so replace the fuel filter. * Also, ensure the tank is adequately vented and check the line screw connections for any leaks.
J
Jared RobertsAug 26, 2025
How to start Hatz Engine in cold weather?
- R
  Randy StaffordAug 26, 2025
  If your Hatz Engine is having trouble starting in cold weather, consider these factors: * Check the fuel. Ensure the fuel from the feed line is clear, not cloudy. If gelled, thaw the engine or drain the system and refill with temperature-resistant fuel. * If the oil is too viscous, change the engine oil and oil filter, using a suitable viscosity class. * Uncouple the engine from the machine, if possible.
B
brodriguezAug 28, 2025
Why Hatz 2M41Z Engine loses power, speed and emits black smoke?
- K
  Kimberly LloydAug 28, 2025
  If your Hatz Engine is losing power and speed while emitting black smoke, it could be due to: * A dirty air filter. Check it for contamination and clean or replace it if needed. * If the air filter is ok, adjust the tappet clearance.
R
Ryan MillerAug 31, 2025
What causes Hatz 2M41Z to overheat?
- R
  Robert KellyAug 31, 2025
  If your Hatz Engine is overheating and the temperature indicator lamp is on, it could be caused by: * Too much engine oil. Drain the excess oil until it reaches the upper mark on the dipstick. * Inadequate cooling due to contamination. Clean the cooling air area.
C
carriebarnettSep 3, 2025
What to do if Hatz 2M41Z switches off spontaneously?
- M
  matthew20Sep 3, 2025
  If your Hatz Engine is spontaneously switching off during operation, consider these possible causes: * Check the fuel level. The tank may have run out of fuel, so fill it up. * A clogged fuel prefilter or main fuel filter can cause this, so change the fuel filter. * Inspect the poly v belt for damage. If it's torn, replace it.
C
crystalparksSep 6, 2025
What to do if Hatz 2M41Z starts then stops?
- R
  Ryan HuntSep 6, 2025
  If your Hatz Engine starts but doesn't keep running after you release the starter, consider these possibilities: * Ensure the speed control lever is fully in the Start position. Set the lever to the Start position. * If possible, separate the engine from the machine by uncoupling it. * A clogged fuel prefilter or main fuel filter could be the culprit, so change the fuel prefilter or change the main fuel filter. * Systematically check the entire fuel supply to ensure it is not interrupted. * Check the oil level if there's a stop signal from monitoring elements due to low oil pressure.
D
dburchSep 9, 2025
Why Hatz Engine shuts off with automatic electrical switch-off?
- J
  Jeanette ElliottSep 9, 2025
  If your Hatz Engine shuts off with the automatic electrical switch-off mechanism, it could be due to: * Low oil pressure. Check the oil level. * High engine temperature. Check the cooling air guides for contamination or other impairments.
J
John TrevinoSep 12, 2025
What to do if Hatz 2M41Z starter does not switch on?
- M
  Megan KingSep 12, 2025
  If the starter of your Hatz Engine doesn't switch on and the engine doesn't turn, the cause may be irregularities in the electrical equipment. Check the electrical equipment and its components.

Hatz 2M41Z Specifications

General

Engine Model	2M41Z
Number of Cylinders	2
Cooling System	Air-cooled
Fuel System	Direct injection
Compression Ratio	20:1
Starting System	Electric starter
Lubrication System	Forced lubrication with gear pump
Cooling	Air-cooled
Engine Type	Diesel

Summary

Operator's Manual Introduction

Model Identification

Identifies the specific engine models covered by this manual: 2L41C, 2M41, 2M41Z.

Safety

Intended Use and Foreseeable Misuse

Defines the proper applications of the engine and lists activities considered misuse.

User and Manufacturer Obligations

Operational Safety

General Safety Instructions

Operation Safety Instructions

Safe Operation and Faults

Key points for safe operation and procedures for handling operational faults.

Maintenance Safety Instructions

Maintenance Intervals and Replacing Parts

Guidance on maintenance schedules, work scope, and replacing components.

Electrical Equipment Safety

Battery and Flammable Substance Safety

Safety precautions for batteries, flammable substances, and chemical hazards.

Technical Data

Engine Specs and Quantities

Engine Oil

Oil Quality and Viscosity

Fuel Specifications

Engine Design

2M41/2M41Z Model Overview

Transport, Assembly, Commissioning

Installation Notes

Operation and Use

Operational Safety Notes

Speed Control & Starting Engine

Starting with Crankhandle

Starting with Starter & Instrument Boxes

Switching Off the Engine

Refueling

Checking Engine Oil Level

Maintenance

General Maintenance Instructions

Overall guidelines and safety rules for performing maintenance tasks.

Maintenance Plan

8-15 Hour Service

250 & 500 Hour Service

Checking Cooling Air Area

Changing Engine Oil

Checking Poly V Belt

Cleaning Cooling Components

Changing Fuel Prefilter

Maintaining Dry Air Filter

Checking Air Filter Cartridge

Adjusting Tappet Clearance

Changing Oil Filter

Changing Main Fuel Filter

Renewing Poly V Belt

Faults and Troubleshooting

Engine Start Issues

Troubleshooting guide for common engine start-up problems.

Engine Running Issues

Emergency Start Procedure

EPA Certified Engines

EPA Maintenance and Warranty

Supplemental information on maintenance and warranty for EPA certified engines.

EPA Emission Related Parts

EPA Maintenance Schedule & Emission Control

EPA Emission Warranty Statement

Supplemental Warranty Information

Warranty Parts & Terms

Exhaust System Installation

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