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AS MOTOR AS 21 2T - User Manual

AS MOTOR AS 21 2T
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Operating Instructions
Allmäher®
AS 21 2T + AS 26 2T
From serial number: 020211040001 + 020011040001
Issued: 18.02.2015, V14.0
EN-Translation of the Original Operating Instructions

Questions and Answers

  • A
    Austin JosephAug 17, 2025
    Why AS MOTOR AS 21 2T engine starts badly?
    • S
      scott44Aug 17, 2025
      If your AS MOTOR Lawn Mower engine starts poorly or runs irregularly, the choke might be closed (open it). Another potential cause is a dirty air filter, so you should maintain it. Also, using poor quality, dirty, or old fuel can cause this issue; always use fresh fuel.
  • B
    Bryan MannAug 21, 2025
    How to fix uneven cut with AS MOTOR AS 21 2T Lawn Mower?
    • A
      Alison RyanAug 21, 2025
      If your AS MOTOR Lawn Mower is leaving an uneven cut, making your lawn look unsightly, it could be due to a dull or worn blade. Have the blade resharpened and balanced or replaced. Also, check if your speed is too high for the cutting height; reduce the speed and select the correct cutting height. Lastly, a heavily contaminated mower housing can cause this, so clean it thoroughly.
  • C
    Curtis BarnettAug 25, 2025
    Why AS MOTOR AS 21 2T Lawn Mower has strong vibrations?
    • K
      kcarrollAug 25, 2025
      Strong vibrations during operation of your AS MOTOR Lawn Mower can be caused by several issues. An unbalance at the blade, due to incorrect sharpening or chips, can cause vibrations; have the blade resharpened and balanced by an authorised service centre, and replace a damaged blade immediately. Other potential causes that require professional attention include a bent blade drive shaft, loose engine fastening, or loose blade fastening.
  • R
    Renee DurhamAug 28, 2025
    What to do if AS MOTOR AS 21 2T Lawn Mower engine gets hot?
    • B
      Betty CookeAug 28, 2025
      If your AS MOTOR Lawn Mower engine is getting too hot, it might be because the ventilation grid is dirty, so clean it. Another possible reason is that the cooling fins of the engine are dirty and should be cleaned by an authorised service centre.
  • A
    aaronfitzgeraldSep 1, 2025
    What to do if discharge channel is jammed in AS MOTOR Lawn Mower?
    • K
      Katherine ClarkSep 1, 2025
      If the discharge channel of your AS MOTOR Lawn Mower is jammed, it could be because the mowed grass was too long or too damp. Adjust the cutting height and mowing speed to suit the mowing conditions. Alternatively, the blade may be worn or the engine speed may be too low despite full power, both of which require attention from an authorised service centre.
  • N
    Natalie MercerSep 5, 2025
    What to do if AS MOTOR AS 21 2T engine does not switch off?
    • J
      John GuerraSep 5, 2025
      If the engine of your AS MOTOR Lawn Mower does not switch off, the switching off system is likely defective. Close the fuel valve and seek assistance from an authorised service centre.
  • B
    browndanielSep 8, 2025
    How to fix if the blade slides on AS MOTOR AS 21 2T?
    • N
      Nicholas YoungSep 9, 2025
      To address a sliding blade issue on your AS MOTOR Lawn Mower, replace the friction discs.
  • D
    Dana HullNov 12, 2025
    Why my AS MOTOR AS 21 2T engine does not start?
    • A
      Anna PaceNov 12, 2025
      If your AS MOTOR Lawn Mower's engine won't start, several factors could be at play. First, make sure the engine brake lever is pressed towards the handlebar. Check that the fuel valve and tank ventilation screw are open, and that there's enough fuel in the tank. Ensure the choke is closed. If the engine was flooded from too many start attempts, remove the spark plugs, close the fuel valve, open the choke, set to full throttle and start it a few times to dry it out. Then, dry the spark plugs and reinstall them. Also, verify the spark plug connector is properly attached. Other potential issues include a dirty air filter (maintain it), sooted or damaged spark plugs (clean or replace them), a jammed mower housing (see maintenance instructions), or poor quality fuel (clean the fuel system and u...

Summary

Preface

Intended use

Defines the exclusive purpose of the device for cutting grass and similar vegetation in maintained areas.

Safety instructions

Safe handling of fuel

Provides critical safety information on handling flammable fuel, including storage and spill procedures.

Operational safety

Use caution during operation

Outlines critical safety measures to follow while operating the device, including starting and stopping procedures.

Mowing safety and procedures

Caution when mowing slopes

Provides specific warnings and instructions for safe operation on inclined terrain to prevent tipping and slipping.

Maintenance and repair safety

Use caution during maintenance and repair

Emphasizes safety during maintenance and repair, specifying authorized parts and service centers to avoid injuries.

Detailed control elements

Assembly: Scope of delivery and guide bar

Assembly: Protection skirt and front wheel

Fueling and cutting height adjustment

Fueling the device

Provides step-by-step instructions for safely filling the fuel tank, including cooling time.

Wheel adjustments and starting procedure

Starting the engine

Details the safe procedure for starting the engine, including choke and tickler usage and safety warnings.

Driving, turning, and stopping

Maintenance and cleaning schedule

Component maintenance overview

Lists components like device, fuel, carburetor, and engine, and their required maintenance actions and intervals.

Preparations and cleaning procedures

Engine and air filter maintenance

Engine cooling and spark plug checks

Emphasizes keeping engine cooling fins clean and procedures for checking and maintaining spark plugs.

Air filter maintenance

Explains the importance of a clean air filter, correct replacement, and precautions against damage.

Drive and blade checks

Checking and re-adjusting the drive

Guides users on how to check the drive system's function and re-adjust it if needed.

Blade inspection and wear

Details blade inspection for wear, damage, and cracks, and the importance of proper sharpening and balancing.

Blade replacement and storage

Blade change and engine brake check

Specifies conditions for blade replacement and how to verify the engine brake's functionality.

Troubleshooting engine issues

Engine starting and running problems

Addresses common problems like engine not starting or running irregularly, with solutions for fuel, choke, and spark plug issues.

Troubleshooting drive and cutting issues

Drive, blade, and vibration problems

Solves issues related to drive belt, blade performance, strong vibrations, and irregular noises during operation.

Engine overheating and cutting quality

Addresses engine overheating, uneven cuts, and discharge channel blockages, providing corrective actions.

Mixing ratios for fuel

Fuel mixing recommendations

Offers specific mixing ratios (1:50 and 1:100) for different quantities of petrol and two-stroke oil.

Technical data

AS MOTOR AS 21 2T Specifications

General IconGeneral
BrandAS MOTOR
ModelAS 21 2T
CategoryLawn Mower
LanguageEnglish

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