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Farymann Diesel 15W - Repair Manual

Farymann Diesel 15W
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DIESEL ENGINES : 15 / 18 / 32W

Table of Contents

Questions and Answers

  • B
    Brian WoodsAug 17, 2025
    Why won't my Farymann Diesel Engine start?
    • M
      mejialauraAug 17, 2025
      If your Farymann Diesel Engine won't start, several issues could be the cause. First, make sure there's fuel in the tank and the acceleration lever is set to full load. Check the vent valve in the tank cap; if blocked, renew the cap. Also, inspect the fuel lines for blockages and replace the fuel filter if it's clogged. Broken fuel lines or leaking connections should be renewed or tightened. If the fuel is too hot, cool it down. In cold seasons, paraffin precipitation might occur, so drain and flush the system, renewing the fuel filter. Finally, gasoline in the tank instead of diesel will prevent starting; drain the gasoline, flush, and fill with diesel. Ensure the air intake isn't blocked and change the filter insert.
  • S
    steven61Aug 20, 2025
    How to improve poor performance and black smoke from Farymann Diesel Engine?
    • A
      Angela PalmerAug 20, 2025
      If your Farymann Diesel Engine is showing poor performance and emitting black smoke, it could be due to several reasons. First, check if the engine is overloaded and reduce the load if necessary. Power reduction due to altitude or increased intake temperature should be addressed by troubleshooting the equipment. Ensure the gasket under the injector nozzle is correctly installed. A blocked fuel filter should be renewed. Other potential causes include a faulty injector nozzle or pump, which may need checking, repairing, or replacing. Also, check for incorrect valve clearance, end of delivery, or valve control timings. Lastly, ensure the piston is installed correctly.
  • A
    April Ali DVMAug 25, 2025
    Why does my Farymann Diesel 15W Engine start but then die?
    • T
      Travis KaneAug 26, 2025
      If your Farymann Diesel Engine starts but then fires intermittently or dies, it could be due to a poor fuel supply. Renew the fuel filter. Check the fuel lines for blockages and tighten the connections. If there's water in the fuel, drain it and fill with clean diesel. Also, a faulty injector nozzle or pump can cause these issues, so check, repair, or renew them as necessary.
  • E
    eric11Aug 27, 2025
    What causes a Farymann Diesel Engine to stop suddenly?
    • K
      Karen SalasAug 28, 2025
      If your Farymann Diesel Engine stops suddenly, several potential causes exist. First, ensure the fuel tank isn't empty and fill it if necessary. A blocked vent valve in the tank cap can also cause this issue, so renew the tank cap. If the fuel is too hot, cool it down. Additionally, a choked injection nozzle might be the problem; check, repair, or renew the nozzle.
  • B
    benjaminadamAug 30, 2025
    Why is my Farymann Diesel Engine performing poorly and emitting black smoke?
    • A
      antonio13Aug 30, 2025
      If your Farymann Diesel Engine is showing poor performance and/or emitting black smoke, it might be due to a dirty engine. Clean or renew the filter. Excessive oil carbon deposits on the piston and cylinder head can also cause this, so decoke the components and change the vent valve. Also, the general engine condition may be a factor, so renew the rings and check the air filter. Finally, worn pistons and cylinders or worn bearings may require an engine overhaul.
  • T
    Timothy GordonSep 1, 2025
    What causes blue smoke from a Farymann Diesel Engine?
    • C
      Chad LynchSep 1, 2025
      If your Farymann Diesel Engine is emitting blue smoke, it could be due to several reasons. If the oil level in the oil bath air filter is too high, fill it to the proper level. A faulty vent valve in the cylinder head should be renewed. Also, a damaged sealing ring on the intake valve guide should be renewed. Worn valves or valve guides, or worn pistons and cylinders may require an engine overhaul or renewal.
  • N
    Natalie SellersSep 4, 2025
    What to do if Farymann Diesel Engine stops suddenly?
    • J
      Jerry English PhDSep 4, 2025
      If your Farymann Diesel Engine stops suddenly, it might be due to a broken fuel pipe, which should be renewed. A seized piston will also cause this, requiring renewal of the piston and cylinder. Alternatively, a seized crankshaft bearing could be the cause, necessitating repair or renewal of the crankshaft and bearings.
  • V
    Vickie BoydSep 6, 2025
    Why is my Farymann Diesel 15W Engine emitting white smoke?
    • S
      Stephen TurnerSep 6, 2025
      If your Farymann Diesel Engine is emitting white smoke, it could be due to the ignition being too late, which requires checking and adjusting the end of delivery. Another cause could be a worn injector nozzle, which should be renewed.
  • M
    Mary NicholsSep 9, 2025
    How to solve cold starting problems with Farymann Diesel 15W Engine?
    • B
      brownchristineSep 9, 2025
      If you're experiencing cold starting problems with your Farymann Diesel Engine, make sure the acceleration lever is at the maximum stop buffer and adjust if necessary. If the lubrication oil is too thick, change to the correct viscosity. Check the crank handle for defects. Paraffin precipitation in the fuel can also cause this, so use winter fuel and/or drain and flush the system. Renew the fuel filter as well.
  • E
    Elizabeth MolinaSep 12, 2025
    What causes low oil pressure in a Farymann Diesel 15W?
    • J
      jose01Sep 12, 2025
      If the oil pressure in your Farymann Diesel Engine is too low, the overpressure valve might be defective or have a dirty ball seat, so check, clean, and exchange if necessary. Also, a clogged oil filter can cause low oil pressure, so exchange it. Finally, a faulty lubricating oil pump could be the issue; check, clean, and exchange it if necessary.

Summary

Preface

General Information

General Information and Handling

Details on engine type, configuration, and features.

Organisation and Use of Repair Manual

Guidance on how the manual is structured and its intended use.

General Information

Engine Model and Type Designation

How to identify the engine using the manufacturer's nameplate and type designation.

General Information

Safety Instructions

Crucial safety precautions for handling and operating the engine.

General Information

Additional Safety Instructions

Further safety guidelines for engine operation and maintenance.

Technical Data

Overview of Technical Specifications

Comprehensive technical specifications for the diesel engines.

Technical Data

Construction, Consumptions, and Pressures

Detailed construction data, consumption figures, and pressure specifications.

Technical Data

Construction, Consumptions, and Pressures (Cont.)

Further details on valve adjustments, repair data, and clearances.

Technical Data

Output, Torque, and Consumption

Graphs and data for engine output, torque, and fuel consumption.

Technical Data

Output, Torque, and Consumption (32 W)

Performance curves for the 32W engine model.

Technical Data

Output, Torque, and Consumption (32 W Cont.)

Fuel consumption graph for the 32W engine.

Technical Data

Screws - Tightening Torques and Materials

Specifications for screw tightening torques and recommended sealing materials.

Technical Data

Tools for Engine Maintenance

List of special tools required for engine maintenance and repair.

Technical Data

Additional Maintenance Tools

Further special tools for engine maintenance and repair.

Technical Data

More Maintenance Tools

Further special tools for engine maintenance and repair.

Technical Data

Technical Description of Engines

General technical overview of the diesel engine models.

Engine Applications

List of typical applications for the diesel engine models.

Dismantling and Assembly Procedures

Basic Requirements for Procedures

Essential requirements and preparation steps before starting engine work.

Dismantling and Assembly Procedures

Dismantling Procedures Overview

Step-by-step instructions for dismantling engine components.

Drain Lubrication Oil

Procedure for draining the engine's lubrication oil.

Air Cleaner Removal

Instructions for removing and handling the air cleaner assembly.

Dismantling and Assembly Procedures

Fuel Lines and Filter

Procedure for disconnecting and removing fuel lines and the fuel filter.

Dismantling and Assembly Procedures

High Pressure Fuel Line

Steps for safely disconnecting and removing the high-pressure fuel line.

Fuel Injector Removal

Instructions for removing and handling the fuel injector.

Dismantling and Assembly Procedures

Cylinder Head Removal

Detailed procedure for removing the cylinder head assembly.

Dismantling and Assembly Procedures

Decompression Release Removal

Steps for removing the decompression release mechanism.

Cylinder Removal

Procedure for removing the cylinder from the engine block.

Dismantling and Assembly Procedures

Piston Removal

Instructions for removing the piston from the cylinder.

Connecting Rod Removal

Procedure for removing the connecting rod from the crankshaft.

Dismantling and Assembly Procedures

Crankhandle Guide and Gear End Cover Removal

Steps for removing the crankhandle guide and gear end cover.

Injection Pump Removal (Start)

Initial step for removing the injection pump.

Dismantling and Assembly Procedures

Injection Pump Removal (Details)

Detailed steps for removing the injection pump.

Camshaft Removal

Procedure for removing the camshaft from the engine.

Dismantling and Assembly Procedures

Speed Control Assembly and Governor Removal

Steps for dismantling the speed control assembly and governor.

Dismantling and Assembly Procedures

Oil Pump, Flywheel, and Main Bearing Housing Removal

Procedures for removing the oil pump, flywheel, and main bearing housing.

Dismantling and Assembly Procedures

Crankshaft Removal

Procedure for removing the crankshaft from the crankcase.

Measurement Table - Wearing Parts

Crankcase and Main Bearing Bush Measurements

Measurement and wear specifications for the crankcase and main bearing bush.

Measurement Table - Wearing Parts

Crankshaft Measurements

Measurement and wear specifications for the crankshaft and its components.

Measurement Table - Wearing Parts

Camshaft Measurements

Measurement and wear specifications for the camshaft and camshaft gear.

Measurement Table - Wearing Parts

Gear Cover Measurements

Measurement and wear specifications for the gear cover.

Measurement Table - Wearing Parts

Shafts and Bearings Measurements

Measurement and wear specifications for shafts and bearings.

Measurement Table - Wearing Parts

Connecting Rod Measurements

Measurement and wear specifications for the connecting rod and its bearings.

Measurement Table - Wearing Parts

Cylinder Liner Measurements

Dimensions and wear specifications for the cylinder liner.

Measurement Table - Wearing Parts

Piston 15;18 W Measurements

Measurement and wear specifications for the 15/18W piston.

Measurement Table - Wearing Parts

Piston 32 W Measurements

Measurement and wear specifications for the 32W piston.

Measurement Table - Wearing Parts

Cylinder Head 15;18 W Measurements

Dimensions and specifications for the 15/18W cylinder head.

Measurement Table - Wearing Parts

Cylinder Head 32 W Measurements

Dimensions and specifications for the 32W cylinder head.

Rocker Arm Measurements

Measurement and wear specifications for rocker arms.

Engine Reassembly Procedures

Crankcase Reassembly

Procedure for pressing bearing bushes into the crankcase.

Crankshaft Installation

Steps for installing the crankshaft and its gear.

Engine Reassembly Procedures

Main Bearing Housing and Flywheel Installation

Procedures for installing the main bearing housing and flywheel.

Engine Reassembly Procedures

Oil Pump, Governor, and Connecting Rod Installation

Procedures for installing the oil pump, governor, and connecting rod bearings.

Engine Reassembly Procedures

Connecting Rod and Camshaft Installation

Installing the conrod and cap, and fitting the camshaft.

Engine Reassembly Procedures

Governor Control Assembly

Procedure for assembling the governor control mechanism.

Engine Reassembly Procedures

Piston Ring Installation

Instructions for installing piston rings onto the piston.

Engine Reassembly Procedures

Piston and Cylinder Head Valve Guide Installation

Installing the piston and pressing valve guides into the cylinder head.

Engine Reassembly Procedures

Cylinder Head Assembly

Installing valves, cylinder head gasket, and cylinder head.

Engine Reassembly Procedures

Gear End Cover Installation

Procedure for installing the gear end cover, aligning timing marks.

Engine Reassembly Procedures

Gear End Cover Timing and Decompression Device Installation

Aligning timing marks and installing the decompression device.

Engine Reassembly Procedures

Decompression Device Check and Push Rods Installation

Checking decompression device and installing push rods.

Rocker Arm Installation

Installing rocker arms and tightening cylinder head nuts.

Engine Reassembly Procedures

Valve Setting and Oil Filter Installation

Setting valve clearance and installing the 32W oil filter.

Fuel Injector Installation

Installing the fuel injector with new copper washers.

Engine Reassembly Procedures

Injection Pump, Fuel Line, and Valve Cover Installation

Installing injection pump, fuel lines, and valve cover.

Test Run, Adjustments, and Checks

Engine Test Run Guidelines

Guidelines for conducting the initial test run of the engine.

Lubrication System Information

Basic information about the engine's lubrication system.

Test Run, Adjustments, and Checks

Oil Pressure Check and Fuel System Overview

Checking oil pressure and understanding the fuel system.

Fuel Filter Replacement

Procedure for replacing the fuel filter.

Test Run, Adjustments, and Checks

Fuel Injector and Nozzle Testing

Checking and adjusting the fuel injector's pressure and spray pattern.

Test Run, Adjustments, and Checks

Excess Starting Fuel Button Function

Explanation of the excess starting fuel button's function and adjustment.

Test Run, Adjustments, and Checks

Fuel Injection Timing Adjustment

Procedure for checking and adjusting fuel injection timing.

Test Run, Adjustments, and Checks

Fuel Injection Timing Shim Adjustment

Further details on adjusting injection timing using shims.

Test Run, Adjustments, and Checks

Governor Types and Function

Types of governors and explanation of their control system function.

Test Run, Adjustments, and Checks

Governor Setting Procedure

Procedure for setting and adjusting the engine governor.

Test Run, Adjustments, and Checks

Engine Speed Setting

Procedure for adjusting the engine's maximum and idle speed.

Test Run, Adjustments, and Checks

Acceleration Lever Adjustment

Adjusting the position of the acceleration lever's ratchet plate.

Electrical System

Flywheel-Dynamo and Regulator Operation

Description of the flywheel, dynamo, and regulator operation.

Electrical System

Electrical System Hazards and Failures

Hazards and common causes of failure related to the electrical system.

Electrical System

Dynamo Output Graphs

Graphs illustrating idling voltage and charging current.

Wiring Diagrams

Wiring Diagram 1

Detailed wiring diagram of the engine's electrical circuits.

Wiring Diagrams

Wiring Diagram 2

Second wiring diagram for the engine's electrical system.

Wiring Diagrams

Wiring Diagram 3

Third wiring diagram for the engine's electrical system.

Wiring Diagrams

Wiring Diagram 4

Fourth wiring diagram for the engine's electrical system.

Wiring Diagrams

Wiring Diagram 5

Fifth wiring diagram for the engine's electrical system.

Troubleshooting

Engine Will Not Start

Common causes and remedies for an engine that fails to start.

Troubleshooting

Intermittent Starting or Stalling

Causes and solutions for intermittent engine firing or stalling.

Poor Performance and Black Smoke

Reasons for reduced engine performance and black smoke.

Troubleshooting

Poor Performance and Black Smoke (Cont.)

Specific causes for poor performance and black smoke.

Imperfect Operating Behaviour

Troubleshooting guide for various imperfect operating behaviors.

Troubleshooting

Imperfect Operating Behaviour (Cont.)

Solutions for engine stopping suddenly, smoke, and oil pressure issues.

Farymann Diesel 15W Specifications

General IconGeneral
BrandFarymann Diesel
Model15W
CategoryEngine
LanguageEnglish

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