Powersmart PS531 User Manual

INSTRUCTION MANUAL

Have product questions or need technical support? Please feel free to contact us!

31cc 4-Cycle Gas String Trimmer

Model # PS531

Website: www.Amerisuninc.com
www.powersmartusa.com

Toll free: 1-800-791-9458 Mon-Fri 9-5 EST
Email: [e-mail]

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CONTENTS

Technical data…...………………………………………………………... 3
Introduction………………………………………………………………. 4
Safety information…….………………………………………………... 4

General safety procedures ……....……………………………………… 5

Knowing your string trimmer……………………………………………… 9
String trimmer preparation…………………………………….…………... 10

Operation……………………....………………………………………… 13

Maintenance……………………………………………………………... 15
Storage……………………………………………………………………. 15
Troubleshooting…………………………………………………………. 16
Exploded view & parts list……………………………………………… 17
Warranty………………………………………………………………… 21

TECHNICAL DATA

31cc 4-Cycle Gas String Trimmer
Model # PS531
Engine type: 4-Cycle, Single Cylinder, Air-cooled
Displacement: 31 cc
Fuel tank capacity: 20.3 fl.oz
Oil capacity: 2.7 fl.oz
Trimmer mechanism: Bump head
Trimmer line diameter: 0.095"
Cutting path diameter: 13"
Overall length: 70.9 inch
Package dimensions (L x W x H): 42.5 x 10 x 11.4 inches
Shipping weight: 18.8 lb.

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INTRODUCTION

Thank You for purchasing your PowerSmart® Product. This manual provides information regarding the
safe operation and maintenance of this product. Every effort has been made to ensure accuracy of the
information found in this manual. PowerSmart® reserves the right to change this product and
specifications at any time without prior notice.

Please keep this manual available to all users during the entire life of the product.

This manual contains special me ssages to bring attention to pote ntial safety concerns, product
damage as well as helpful operating and servicing information. Please read all the
information carefully to avoid injury and machine damage.

QUESTIONS? PROBLEMS?

Please contact our Customer Service Department with any questions and/or comments, either by Email:
[e-mail], or Toll Free at [phone]. We are available Mon-Fri 9am-5pm EST to
help solve any issues that you might encounter.

NOTICE REGARDING EMISSIONS

Engines that are certified to comply with U.S. EPA emission regulations for SORE (Small Off Road
Equipment), are certified to operate on regular unleaded gasoline, and may include the following
emission control systems: (EM) Engine Modif ications and (TWC) Three -Way Catalyst (if so equipped).

SAFETY INFORMATION

Before operating this product, read and observe all warnings, cautions, and instructions on the product
and in this Owner’s Manual.

NOTE: The following safety information is not meant to cover all possible conditions and situations that
may occur. Read the entire Owner’s Manual for safety and operating instructions. Failure to follow
instructions and safety information could result in serious injury or death.

This safety alert symbol is used to identify safety information about hazards that can result in personal
injury.

A signal word (DANGER, WARNING, or CAUTION) is used with the alert symbol to
indicate the likelihood and the potential severity of injury. In addition, a hazard symbol may
be used to represent the type of hazard.

DANGER: Indicates a hazard, which, if not avoided, will result in death or serious injury.

WARNING: Indicates a hazard, which, if not avoided, could result in death or serious injury.

CAUTION: Indicates a hazard, which, if not avoided, might result in minor or moderate injury.

CAUTION: When used without the alert symbol, indicates a situation that could result in damage to

the engine.

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GENERAL SAFETY PROCEDURES

For any questions regarding the hazard and safety notices listed in this manual or on the product, please
call [phone] Mon-Fri 9-5 EST. Please read and understand the instructions in this manual

before starting the engine or attempting to operate this unit.

Warning: When using the unit, all safety rules must be followed. Please read these instructions before

operating the unit in order to ensure the safety of the operator and any bystanders. Please keep these
instructions for later use.

Warning: This unit can cause serious injury including loss of limb(s) or blindness to the operator and
others. The warnings and safety instructions in this manual must be followed to provide reasonable safety
and efficiency in using the unit. The operator is responsible for following the warnings and instructions in
this manual and on the unit. Read the entire instruction manual before assembling and using the unit!
Restrict the use of this unit to persons who read, understand, and follow the warnings and instructions in
this manual and on the unit. Never allow children to operate this unit.

OPERATOR SAFETY

• Always wear safety glasses or similar eye protection when operating, or performing maintenance on

your unit. We recommend eye protection that is ANSI Z87 certified for impact resistance.

• Use appropriate hearing protection.

• Always wear long pants from a sturdy fabric, long sleeves, boots and gloves. Wearing safety leg

guards is recommended. Dress appropriate to the terrain that you will be clearing.

• Being fully covered will also help to protect you from debris and/or pieces of toxic plants thrown by

the spinning line/blade. A face or dust mask if recommended of the operation in dry conditions.

• It is recommended to wear foot protection with a reinforced toe.

• Never attempt to use this product while barefoot or in sandals.

• Secure longer hair to above the shoulders. Secure or remove loosely hanging clothing, jewelry, ties,

straps, tassels, etc. They can become entangled and caught within the moving parts.

• Do not operate unit when you are tired, sick, upset or under the influence of alcohol, drugs, or

medication. Watch what you are doing; use common sense. Stay alert.

• Never start or run the engine inside a room or building. Even with windows open, breathing CO

exhaust fumes can quickly disorient and/or subsequently become lethal.

• Keep handles free of oil and fuel.

• Always use the handlebar and a properly adjusted shoulder strap with a blade (see ASSEMBLY).

DANGER: CARBON MONOXIDE

Using any internal combustion engine indoors CAN KILL YOU IN MINUTES. Engine
exhaust contains carbon monoxide (CO). This is a poison gas you cannot see or smell. If you can smell
the engine exhaust, you are breathing carbon monoxide (CO). Even if you don’t smell exhaust, you could
still be breathing CO.

NEVER use an engine inside homes, garages, crawlspaces, or other partly enclosed areas. Deadly levels
of carbon monoxide can build up quickly in these areas. Using a fan, or opening windows and/or doors
will NOT properly vent CO or supply adequate fresh air. ONLY run an engine outside and far away from
all windows, doors, and vents. These openings can pull in engine exhaust.

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Even if you use an engine correctly, CO may leak into the home. ALWAYS use a battery-powered or
battery-backup CO alarm in the home. If you start to feel sick, dizzy, or weak after the engine has been
running, move to fresh air RIGHT AWAY. See a doctor. You may have carbon monoxide poisoning.

WARNING: The exhaust from this product contains chemicals known to th e State of California to cause
cancer, birth defects, or other reproductive harm.

WARNING: This engine may emit highly flammable and explosive gasoline vapors, which can cause
severe burns or even death if ignited. A nearby open flame can lead to explosion even if it isn’t directly in
contact with gasoline.

• Do not operate near an open flame.

• Do not smoke near the engine.

• Always operate on a firm, level surface.

• Always turn engine off b efore refu eli ng. All ow engine to cool for at least 2 minutes before

removing fuel cap. Loosen cap slowly to relieve pressure in tank.

• Do not overfill fuel tank. Gasoline may expand during operation. Do not fill to the top of the tank.

Allow for expansion.

• Always check for spilled fuel before operating.

• Empty fuel tank before storing or transporting the engine.

WARNING: This engine produces heat when running. Temperatures near exhaust can exceed 1500F
(650 C).

Do not touch hot surfaces. Pay attention to warning labels on the engine identifying hot parts of the
machine. Allow engine to cool down after use before touching engine or areas of the engine that become
hot during use.

CAUTION: Misuse of this engine can damage it or shorten its life.
Only use engine for its intended purposes.

UNIT/MAINTENANCE SAFETY
WARNING: Stop unit and disconnect the spark plug before performing maintenance (except idle speed

adjustments).

• Look for and replace damaged or loose parts before each use. Look for and repair fuel leaks before

use. Keep unit in good working condition.

• Throw away blades that are bent, warped, cracked, broken, or damaged in any other way. Replace

trimmer head parts that are cracked, chipped, broken, or damaged in any other way before using the
unit.

• Maintain unit according to recommended procedures. Keep blade sharp. Keep cutting line at the

proper length.

• Use only specified replacement line. Never use wire, rope, string, etc.

• Install required shield properly before using the unit.

• Use only specified blade or trimmer head; make sure it is properly installed and securely fastened.

• Never start engine with clutch shroud removed. The clutch can fly off and cause serious injury.

• Be sure blade or trimmer head stops turning when engine idles.

• Make idle speed adjustments with the lower end supported to prevent blade or trimmer line from

contacting any object. Hold unit by hand; do not use the shoulder strap for support.

• Keep others away when making idle speed adjustments.

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• Use only recommended accessories and replacement parts.

• Have all maintenance and service not explained in this manual performed by your authorized service

dealer.

CUTTING SAFETY
WARNING: Inspect area before starting unit. Remove all debris and hard objects such as rocks, glass,

wire, etc., that can ricochet, be thrown, or otherwise cause injury or damage during operation.

• Keep others including children, animals, bystanders, and helpers at least 50 feet (15meters) away.

Bystanders should be encouraged to wear safety glasses. Stop engine immediately if you are
approached.

• Always keep engine on the right--hand side of your body.

• Hold the unit firmly with both hands.

• Keep firm footing and balance. Do not overreach.

• Keep blade or trimmer head below waist level. Do not raise engine above your waist.

• Keep all parts of your body away from blade, trimmer head, and muffler when engine is running. A

hot muffler can cause serious burns.

• Cut from your left to your right. Cutting on right side of the shield will throw debris away from the

operator.

• Use only in daylight or good artificial light.

• Use only for jobs explained in this manual.

TRANSPORTING AND STORAGE

• Stop the unit before transporting.

• Keep the muffler away from your body.

• Allow the engine to cool and secure the unit before storing or transporting it in a vehicle.

• Empty the fuel tank before storing or transporting the unit. Run out of fuel left in the carburetor by

starting the engine and letting it run until it stops.

• Store unit and fuel in area where fuel vapors cannot reach sparks or open flames from water heaters,

electric motors or switches, furnaces, etc.

• Store unit so the blade or line limiter blade cannot accidentally cause injury. The unit can be hung by

the shaft.

• Store unit out of reach of children.
SAFETY NOTICE: Exposure to vibrations through prolonged use of gasoline powered hand tools could

cause blood vessel or nerve damage in the fingers, hands, and joints of people prone to circulation
disorders or abnormal swellings. Prolonged use in cold weather has been linked to blood vessel damage
in otherwise healthy people. If symptoms occur such as numbness, pain, loss of strength, change in skin
color or texture, or loss of feeling in the fingers, hands, or joints, discontinue the use of this tool and seek
medical attention. A reduced-vibration system does not guarantee the avoidance of these problems. Users
who operate power tools on a continual and regular basis must monitor closely their physical condition
and the condition of this tool.

Children

Sever injury can occur if the operator is not alert to the presence of children in the immediate area.
Children are often attracted to the mowing activity. Never assume that children will remain where you
last saw them.