Hayter POWERTRIM 407S User Manual (English)

Questions and Answers:

M
Mary CastroAug 10, 2025
Why does my Hayter Lawn and Garden Equipment engine run poorly?
- K
  Kyle SheaAug 10, 2025
  If your Hayter Lawn and Garden Equipment engine runs poorly, there are several possible causes. A bad spark plug could be the culprit, so replace it. A dirty air filter can also cause poor performance, so replace that as well. Stale petrol is another common issue; drain the old petrol and add fresh petrol. The engine cooling system might be clogged, so clean the engine screen and cooling fins. If none of these steps improve the engine's performance, the carburetor may need adjustment. You may need to take the unit to an authorized Service Dealer for this.
X
xreynoldsAug 16, 2025
What to do if Hayter Lawn and Garden Equipment engine overheats?
- J
  Jason WilliamsAug 16, 2025
  If your Hayter Lawn and Garden Equipment engine overheats, it could be due to several reasons. The engine cooling system might be clogged, so clean the debris screen and engine cooling fins. Another possible cause is the carburetor being out of adjustment; in this case, take the unit to an authorized Service Dealer. Also, check the oil level and add oil if it is low.
A
Adam NelsonAug 21, 2025
What to do if Hayter Lawn and Garden Equipment engine will not stop running?
- L
  lorettapatrickAug 21, 2025
  If the engine of your Hayter Lawn and Garden Equipment will not stop running, a defective throttle control lever or wire could be the cause; inspect and replace any damaged parts. Another possibility is that the throttle is not adjusted properly, so move the throttle to the full OFF position.
D
deanwashingtonAug 26, 2025
Why Hayter Lawn and Garden Equipment has poor trimming performance and vibrates?
- M
  Mary BowenAug 26, 2025
  Poor trimming performance and trimmer vibration in your Hayter Lawn and Garden Equipment can stem from several issues. The trimmer line length might be too short; the correct length is 52cm (21.5 inches), and if it's less than half this length, replace the line. Ensure the engine is set at FAST speed by moving the engine throttle lever to the FAST position. Substantially different trimmer line lengths can also cause this, so adjust them to approximately equal lengths. Loose nuts or bolts, including engine bolts, should be checked and tightened. Lastly, a broken trimmer head will cause vibration and poor performance, so replace any broken parts.
A
Ashley JacksonAug 30, 2025
Why Hayter Lawn and Garden Equipment trimmer head does not retain line?
- R
  Rachel AndersonAug 30, 2025
  If the trimmer head on your Hayter Lawn and Garden Equipment does not retain the line, it could be due to a few reasons. The trimmer line might not be properly attached, so follow the instructions on the decal or in the Maintenance section of the owner’s handbook. A broken line retainer could also be the problem, requiring you to replace the trimmer head assembly. Finally, ensure that you are using the correct size trimmer line, which is 3,3mm (0.130 inch) in diameter.

Hayter POWERTRIM 407S Specifications

General

Brand	Hayter
Model	POWERTRIM 407S
Category	Lawn and Garden Equipment
Language	English

Summary

LIMITED WARRANTY

SAFETY RULES

OWNER'S INFORMATION

Guidance for understanding the product and operating instructions.

Slope Operation

Guidance on safe operation on sloped terrain to prevent accidents.

Children

Precautions to ensure children's safety around the machine.

Service

Safety guidelines related to handling fuel and potential hazards.

INTERNATIONAL PICTORIALS

Explanation of safety and control symbols used on the unit.

ASSEMBLY

CONTENTS OF PARTS BAG

Lists items included in the parts bag with the machine.

TOOLS REQUIRED

Lists necessary tools for assembly and initial setup.

TO REMOVE THE TRIMMER FROM CARTON

Step-by-step instructions for safely unpacking the machine.

HOW TO RAISE THE HANDLE

Instructions for adjusting the machine's handle to the correct operating position.

HOW TO ATTACH THE GUARD

Steps to correctly install the protective guard onto the machine.

ENGINE PREPARATION

Essential steps for preparing the engine before initial operation.

Fill Crankcase With Oil

Instructions for adding the correct amount of oil to the engine crankcase.

Fill Fuel Tank With Petrol

Guidance on safely filling the fuel tank with the appropriate type of petrol.

CHECKLIST

A final check before operation to ensure all steps are completed.

OPERATION

KNOW YOUR POWERTRIM

Familiarization with controls and components before operating the machine.

EYE PROTECTION

Importance of wearing eye protection during operation to prevent injury.

HOW TO STOP THE TRIMMER HEAD

Procedure to safely disengage and stop the trimmer head rotation.

HOW TO STOP THE ENGINE

Steps to safely shut down the engine after operation.

HOW TO USE THE TRIMMER HEAD DRIVE LEVER

Instructions for engaging and operating the trimmer head.

HOW TO USE THE THROTTLE CONTROL

Guidance on adjusting engine speed and stopping the engine.

HOW TO USE THE PRIMER BUTTON

Steps for using the primer to start a cold engine.

HOW TO START THE ENGINE

Detailed steps for starting the engine, including cold start procedures.

TRIMMER TIPS

Advice for optimal trimming performance and safety on slopes.

MAINTENANCE

CUSTOMER RESPONSIBILITIES

Outlines owner's duties for regular service and record-keeping.

LUBRICATION

Instructions for lubricating key components like the jackshaft assembly.

How To Change Engine Oil

Step-by-step guide for draining and refilling engine oil.

HOW TO REPLACE THE AIR FILTER

Procedure for replacing the engine air filter to maintain performance.

SPARK PLUG

Guide for checking, cleaning, and replacing the spark plug for optimal engine function.

HOW TO ADJUST THE HEIGHT OF THE HANDLEBAR

Instructions for adjusting the handlebar height for comfortable operation.

HOW TO REPLACE THE TRIMMER LINE

Instructions for replacing worn trimmer line to maintain cutting performance.

HOW TO CHANGE TRIMMER LINES

Tips for keeping trimmer line moist for flexibility and longevity.

HOW TO REPLACE THE DRIVE BELT

Detailed procedure for replacing the drive belt for proper power transmission.

STORAGE

Instructions for proper storage of the machine and engine during off-season.

Trimmer

Cleaning and storage recommendations for the trimmer unit.

Engine

Steps to protect the engine from damage during long-term storage.

TROUBLE SHOOTING CHART

REPAIR PARTS

How To Order Replacement Parts

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32 pages

Hayter POWERTRIM 407S User Manual

Table of Contents