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AirMan SDG65S-6A6 - User Manual

AirMan SDG65S-6A6
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INSTRUCTIONAL MANUAL
MOBILE GENERATORS
SDG25S-6A7, SDG45S-6A6,
SDG65S-6A6, SDG100S-6A6
MMD Equipment Inc.
121 High Hill Road
Swedesboro, NJ 08085
Tel: (800) 433-1382
Fax: (856) 467-5235
www.mmdequipment.com

Table of Contents

Questions and Answers

  • S
    Stephanie HowellAug 16, 2025
    What to do if AirMan SDG65S-6A6 starter rotates but engine won't start?
    • J
      Jeremy MitchellAug 16, 2025
      If the starter rotates but the engine doesn't start, several issues could be the cause. Check for a clogged fuel filter, and if so, disassemble, clean, and change it. Also, the filter of the fuel air-bleeding electric pump might be clogged and needs changing. A malfunctioning fuel shut-off solenoid could be the issue, so check the fuse. Ensure there's diesel fuel oil and replenish if needed. Finally, air might be mixing in the fuel pipings, requiring you to bleed the air.
  • J
    Jason BrayAug 19, 2025
    Why does the engine oil pressure drop warning lamp glow on my AirMan SDG65S-6A6 Portable Generator?
    • R
      ramirezericaAug 19, 2025
      The engine oil pressure drop warning lamp may illuminate for several reasons. The engine oil level may be low, requiring you to replenish it. The engine oil filter could be clogged and needs changing. There could be an oil pressure switch malfunction that needs checking or repairing. Also, check for loosened or disconnected wiring or connectors and repair them as necessary.
  • M
    michael99Aug 22, 2025
    How to fix coolant temperature rise warning lamp on AirMan SDG65S-6A6 Portable Generator?
    • M
      michelle96Aug 22, 2025
      If the coolant temperature rise warning lamp is glowing, it could be due to several reasons. The radiator might be clogged and needs cleaning. A faulty thermostat or coolant temperature switch may need changing. Ensure there's enough coolant and replenish if there is a shortage. The fan belt may be slipping, requiring tension adjustment. Also, check for looseness or disconnection of wiring or connectors and repair them.
  • E
    Erica SchultzAug 28, 2025
    What to do if AirMan SDG65S-6A6 generates too high voltage?
    • S
      Sarah PottsAug 28, 2025
      If your generator is generating too high voltage, even when the voltage regulator knob is turned, there might be a few reasons. Check for loosened or disconnected wiring or connectors to the AVR and repair them. The AVR itself could be faulty and may need to be checked or changed. Additionally, there could be a broken wire or poor contact of the AVR variable resistor, which would require repair or replacement.
  • A
    Alan StoneAug 31, 2025
    Why does AirMan Portable Generator have unstable voltage generation?
    • J
      Jerry PhamAug 31, 2025
      Unstable voltage generation can stem from a few potential issues. Begin by inspecting all terminals for poor tightening and correct as needed. A faulty AVR could also be the culprit, necessitating a check or replacement. Lastly, verify that the function circuit protector (CP) for AVR protection hasn't been tripped, and reset if required.
  • P
    Paul AndersonSep 3, 2025
    What does it mean if the leakage warning lamp glows on AirMan Portable Generator?
    • J
      Jennifer WebbSep 3, 2025
      If the leakage warning lamp is glowing, it indicates a leakage issue. This could be due to leakage on the generator side, the load side, or the connecting cable. Alternatively, the leakage relay may be defective. In any case, check and repair the source of the leakage.
  • R
    Robin JohnsonSep 6, 2025
    How to troubleshoot a starter that won't rotate on AirMan SDG65S-6A6 Portable Generator?
    • J
      Jacqueline BurgessSep 6, 2025
      If the starter does not rotate or has a low revolution speed, it may be due to a battery malfunction. Check the battery and charge or change it as needed.
  • X
    xwoodSep 9, 2025
    Why is the recharging warning lamp glowing on my AirMan SDG65S-6A6 Portable Generator?
    • L
      Louis MercerSep 9, 2025
      If the recharging warning lamp is glowing, it could indicate an alternator problem, which would need to be checked or changed. Alternatively, there might be looseness or disconnection of wiring or connectors, which should be checked and repaired.
  • S
    suerodriguezSep 12, 2025
    What causes the air filter clogging warning lamp to flicker on AirMan SDG65S-6A6 Portable Generator?
    • S
      Shelly StephensonSep 12, 2025
      The flickering of the air filter clogging warning lamp is caused by air filter clogging. Clean the air filter.
  • R
    Ronald HartNov 24, 2025
    Why is my AirMan Portable Generator generating no voltage or too low voltage?
    • S
      Samuel HarrisNov 24, 2025
      If your generator produces no voltage or too low voltage even when operated at a rated speed, several factors could be responsible. The voltmeter may be faulty and needs checking or changing. Check for poor tightening of terminals and repair them. There might be a broken or short-circuited winding of the generator main unit, requiring inspection and repair. The AVR could be faulty and needs checking or changing. A faulty silicon rectifier or exciter may also be the cause, requiring inspection and replacement if necessary. Check for a broken or short-circuited circuit to the exciter field winding and repair it. Verify that the AVR frequency selection switch is set correctly for the operating frequency. Finally, the function circuit protector (CP) for AVR protection might be activated, requi...

Summary

Preface

Safety

Safety Classification and Warnings

Defines DANGER, WARNING, CAUTION, and IMPORTANT safety levels.

Caution Before Operation

Guidelines for safe operation before starting the unit.

Caution During Operation

Precautions to take while the generator is running.

Cautions During Inspection and Maintenance

Safety measures for checks and maintenance tasks.

Safety Warning Labels

Explains various safety labels attached to the machine.

Part Names

Unit Appearance and Part Names

Identifies external generator unit components.

Internal Components

Details the internal parts of the generator models.

Installation

Transporting Unit

Instructions for safely moving and transporting the generator.

Place and Conditions of Unit Installation

Specifies environmental and location requirements for installation.

Selecting Cable

Guidance on choosing appropriate cables for generator connection.

Connecting Load

Procedures and precautions for connecting electrical loads.

Grounding Method

Explains proper grounding procedures for safety.

Selector Valve of Fuel Pipe

Describes the function and operation of the fuel selector valve.

Operation

Instrument Panel

Overview of the generator's control panel and indicators.

Protection Device

Explains protection systems and warning lamps.

Check Before Starting the Unit

Essential pre-operation checks for oil, coolant, and fuel.

Unit Operation

Procedures for starting, running, and stopping the generator.

Stopping Procedures

Steps to safely shut down the generator unit.

Adjustment of Frequency

How to adjust the generator's output frequency.

Emergency Stop

Instructions for using the emergency stop button.

Air Bleeding

Procedure to remove air from the fuel system.

Periodic Inspection;Maintenance

Important Items at Periodic Inspection and Maintenance

Key considerations before performing inspection or maintenance.

Daily Inspection and Operation Log

Guidelines for daily checks and recording operational data.

Periodic Inspection List

Schedule of inspection and maintenance tasks.

Periodic Replacement of Parts

Lists parts for periodic replacement and their numbers.

Maintenance Procedures

Steps for changing engine oil, filters, and coolant.

GFCI and Other Checks

Procedures for GFCI, thermal relay, air filter, and fuel system.

Coolant and Hose Checks

Procedures for changing coolant and checking rubber hoses.

Maintenance;Adjustment

Battery Maintenance

Safety precautions and procedures for battery care.

Troubleshooting

Identifies common problems, causes, and solutions for the unit.

Storage of the Unit

Preparation for Long-term Storage

Steps to prepare the unit for extended periods of non-use.

Specifications

Generator Specifications

Technical details for the generator models.

Outline Drawing

Visual representations and dimensions of the generator units.

Wiring Diagram

Generator Wiring Diagram

Electrical schematic for the generator's main circuits.

Engine Wiring Diagram

Electrical schematic for the engine control system.

AirMan SDG65S-6A6 Specifications

General IconGeneral
Fuel TypeGasoline
Displacement389cc
Voltage120/240V
Frequency60Hz
Engine Type4-Stroke OHV
Starting SystemElectric Start / Recoil Start

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