Farymann Diesel 15B Series

Questions and Answers

A
Aaron YoungAug 22, 2025
Why is the Farymann Diesel Engine performance bad?
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  Mark GibbsAug 22, 2025
  Several factors can contribute to bad engine performance in your Farymann Diesel Engine. Check if the engine is overloaded and reduce the load if necessary. High intake temperature can also reduce performance, so improve operating conditions. Ensure the fuel filter isn't blocked by replacing it. Inspect the injection nozzle seal, ensuring it's present and the correct number are installed. Other potential issues include a defective injection nozzle or pump (check, repair, or replace), incorrect valve clearance (adjust it), incorrect end of delivery (adjust it), incorrect valve timing (check gear-wheel markings), or an incorrectly installed piston (reinstall correctly).
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Rebecca LangAug 28, 2025
Why does Farymann Diesel Engine stop suddenly?
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  williamsrogerAug 28, 2025
  If your Farymann Diesel Engine stops suddenly, it could be due to several reasons. Check if the tank is empty and fill it with fuel. A blocked ventilation in the fuel filler cap can also cause this, so replace the cap. Vapour bubble formation from overly hot fuel is another possibility; let the fuel cool down. Other potential causes include a defective injection nozzle (check, repair, or replace), a broken fuel line (replace it), piston seizure (overhaul the engine), or seized/worn crankshaft bearings (overhaul the engine).
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Carolyn DavisAug 31, 2025
What causes Farymann Diesel Engine to emit blue smoke?
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  Charles PopeAug 31, 2025
  Blue smoke from your Farymann Diesel Engine can be caused by several factors. Start by checking if the oil level is too high and correct it. A defective crankcase ventilation valve could also be the problem, so replace it. Other potential causes include a defective valve stem seal on the intake valve guide (replace the seal), worn valves or valve guides (replace the cylinder head), or worn piston and cylinder (replace the piston and cylinder).
A
Anna CombsSep 3, 2025
Why does Farymann Diesel Engine emit white smoke?
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  Theresa BrownSep 3, 2025
  White smoke from your Farymann Diesel Engine could indicate that the end of delivery is too late; check and adjust it. Also, a worn injection nozzle can cause this issue, so replace it.
C
Christina CarrollSep 6, 2025
What to do if oil pressure warning lamp lights on Farymann Diesel Engine?
- D
  dana83Sep 6, 2025
  If the oil pressure warning lamp lights up on your Farymann Diesel Engine (if equipped), it could be due to a low oil level; correct it by adding oil. Alternatively, the oil pressure switch might be defective, requiring replacement.
H
hpayneSep 9, 2025
What causes low oil pressure in Farymann Diesel Engine?
- E
  Erica WilsonSep 9, 2025
  Low oil pressure in your Farymann Diesel Engine can stem from several issues. Start by inspecting the pressure relief valve for defects or dirt, cleaning or replacing it as necessary. A blocked oil filter can also cause this; replace the oil filter and engine oil. Another potential cause is a defective oil pump, which would require replacement, and potentially an engine overhaul.
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Leah AguilarSep 12, 2025
How to solve cold start problems with Farymann Diesel Engine?
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  Rachel HendersonSep 12, 2025
  If you're experiencing cold start problems with your Farymann Diesel Engine, several factors could be the cause. Ensure the speed adjusting lever is at the maximum position for increased speed. If the engine oil is too viscous, change it to the correct viscosity. Paraffin precipitation in the fuel can also hinder cold starts; drain and flush the fuel system, replace the fuel filter, and use winter fuel. Lastly, a low starting speed could be the issue; check the battery and replace it if necessary.
K
Kathleen DavisNov 15, 2025
How to fix Farymann Diesel Engine that does not start?
- R
  rojassandraNov 15, 2025
  If your Farymann Diesel Engine doesn't start, several factors could be at play. First, ensure there is fuel in the tank by filling it. Next, check that the speed adjusting lever is in the "full load" position. Other potential issues include a blocked ventilation in the fuel filler cap (replace the cap), an interrupted fuel line (check the lines), a blocked fuel filter (replace the filter), a broken or leaky fuel line (replace or tighten), vapour bubble formation due to hot fuel (let it cool), or paraffin precipitation in cold temperatures (drain and flush the system, replace the filter, and use winter fuel). Also consider a defective injection nozzle (check and replace if needed), the presence of petrol instead of diesel (drain and flush the system and consult a service partner), or a bloc...
B
brenda37Nov 18, 2025
What to do if Farymann Diesel Engine starts then stops?
- J
  Jeanne ThompsonNov 18, 2025
  If your Farymann Diesel Engine starts but runs irregularly or stops, consider these possible causes. A blocked fuel filter could be the culprit, so replace it. Check for an interrupted or leaky fuel line, tightening connections as needed. Water in the fuel can also cause this issue; drain the tank and fuel system, flush with diesel, and refill, then check the injection system. Other potential problems include a defective injection nozzle (check, repair, or replace), a defective injection pump (check, repair, or replace), incorrect valve clearance (adjust it), worn valves (replace the cylinder head), sticking piston rings (check and replace if necessary), worn piston and cylinder (overhaul the engine), a blocked intake area (check the air filter case and cartridge), or a blocked exhaust (ch...
J
james33Nov 24, 2025
What causes not faultless operating behaviour of Farymann Diesel Engine?
- M
  Mr. Scott Richardson VNov 24, 2025
  If your Farymann Diesel Engine's operating behavior isn't faultless, several issues could be responsible. Start by reducing the load if the engine is overloaded. Check and clean dirty cooling fins or a blocked cooling air inlet. Ensure adequate cooling air supply and inspect the engine installation. Correct the oil level if it's too high in the crankcase. Other potential causes include a defective injection nozzle (check, repair, or replace), carbon deposits on the piston head (remove deposits, replace piston and cylinder if needed), a sticking injection nozzle needle (replace the nozzle), incorrect end or beginning of delivery (check and adjust), broken piston rings (replace rings, check piston and cylinder), worn piston and cylinder (overhaul the engine), worn main or connecting rod bear...

Summary

General

Information about this manual

Manual ensures safe and efficient engine use. Read and understand before work.

Limitation of liability

Manufacturer not liable for damage due to non-compliance, improper use, or unauthorized modifications.

Customer service

Contact customer service for further technical information and sales/service partners.

Safety

Customer’s responsibility

Owner is responsible for health, safety, and compliance with regulations and manual instructions.

Personnel requirements

Ensures personnel are qualified and instructed for safe operation and maintenance.

Personal protective equipment

Details necessary protective clothing and equipment for various tasks.

Specific dangers

Lists residual risks, focusing on rotating parts and substances harmful to health.

Environmental protection

Covers precautions for handling and disposing of environmentally hazardous substances.

Technical data

Technical specifications

Lists key characteristics of the single-cylinder, four-stroke diesel engine.

Performance data

Presents performance metrics like power, speed, torque, bore, stroke, and compression ratio.

Dimensions and weight

Specifies the overall dimensions and dry weight of the engine.

Structure and function

Overview

Identifies key engine parts through front and left-side views.

Electrical System

Details the engine's electrical components and their functions.

Batteries

Covers safety factors and handling precautions for engine batteries.

Transport, packing and storage

Safety notes for transport

Highlights precautions for safe and damage-free transport of the engine.

Transport inspection

Describes procedures for checking delivery for completeness and transport damage.

Storage

Provides guidelines for optimal storage conditions to maintain engine integrity.

Installation and commissioning

Safety

Specifies safety requirements for personnel involved in installation and commissioning.

Initial commissioning

Essential steps and precautions before the engine's first operation.

Filling with engine oil

Step-by-step instructions for correctly filling the engine with oil.

Filling with fuel

Precautions and steps for filling the engine with clean diesel fuel.

Operation

Safety

General safety warnings related to engine operation.

Preparing for start

Lists checks to perform before starting the engine to prevent damage.

Manual starting

Instructions for starting the engine using the manual crank handle.

Starting with electric starter

Instructions for starting the engine using an electric starter.

Switching off

Procedures for safely shutting down the engine.

Maintenance

Safety

Safety precautions for performing maintenance work correctly.

Maintenance plan

Lists scheduled maintenance tasks at different operating hour intervals.

Changing engine oil

Detailed steps for changing engine oil.

Replacing fuel filter

Instructions for replacing the engine's fuel filter.

Adjusting valve clearance

Safety warnings and prerequisites for adjusting valve clearance.

Faults

Safety

Safety precautions for fault clearance procedures.

Troubleshooting chart

General procedure for fault diagnosis and rectification.

Engine does not start

Troubleshooting steps for when the engine fails to start.

Startup after eliminating fault

Steps to follow for restarting the engine after a fault has been fixed.

Replacement Parts List

Spare parts

Warning about using non-original parts and how to order genuine spares.

Ordering spare parts

Details required information for ordering parts and special tools.

Service history

Proof of purchase

Instructions for filling out purchase details using the engine type plate.

Handover and servicing history

Forms for recording maintenance intervals and dealer stamp for warranty compliance.

Index

Farymann Diesel 15B Series Specifications

General

Engine Type	Diesel
Model	15B Series
Number of Cylinders	1
Cooling System	Air-cooled
Fuel System	Direct Injection
Compression Ratio	20:1
Starting System	Electric start
Lubrication System	Forced Lubrication