Husqvarna 51 manual Contents

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CONTENTS

Before using a new saw

•Read the instructions carefully.

•Check cutting equipment is correctly fitted and adjusted. See page 25.

•Refuel and start the saw. Check the carburetor settings. See pages 26-29.

•Do not use the saw until sufficient chain oil has reached the chain, see page 14.

IMPORTANT! If the carburetor mixture is too lean it greatly increases the risk of engine failure.

Poor maintenance of the air filter will cause carbon build-up on the spark plug and lead to difficult starting.

If the chain is badly adjusted it will cause increased wear or damage to the bar, drive sprocket and chain.

Maintenance, replacement, or repair of the emission control devices and systems may be performed by any nonroad engine repair establishment or individual.

!WARNING!

Under no circumstances may the design of the machine be modified without the permis- sion of the manufacturer. Always use genuine spare parts/accessories. Non-authorized modifications and/or accessories can result in serious personal injury or the death of the operator or others.

Your warranty does not cover damage or liability caused by the use of non-authorized accessories or replacement parts.

You will find the following labels

on your chain saw:

Contents

Key to symbols

2

Safety instructions

 

Personal protective equipment

4

Chain saw safety equipment

4

Inspecting, maintaining and servicing chain saw safety

 

equipment

8

Cutting equipment

10

How to avoid kickback

16

General safety precautions

18

General working instructions

19

What is what?

 

What is what?

24

Assembly

 

Mounting guide bar and chain

25

Fuel handling

 

Fuelmix

26

Fuelling

27

Start and stop

 

Start and stop

28

Maintenance

 

Carburetor

29

Starter device

30

Air filter

31

Spark plug

31

Muffler

31

Needle bearing maintenance

31

Cooling system

32

Centrifugal cleaning ”Air Injection”

32

Winter use

32

Daily maintenance

33

Weekly maintenance

33

Monthly maintenance

33

Technical data

 

51

34

55

34

Federal Emission Control

 

Warranty Statement

 

Your warranty rights and obligations

35

English – 3

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Contents 101 91 51/55Symbols KEY to SymbolsContents Safety Instructions Chain SAW Safety EquipmentPersonal Protective Equipment Chain brake and front hand guard Throttle lock Chain catcherRight hand guard Stop switch Vibration damping systemMuffler Checking the brake trigger Checking brake band wearChecking the front hand guard Checking the inertia brake releaseThrottle lock 5 basic rules Cutting EquipmentSome terms that describe the bar and chain Cutting equipment designed to minimise kickbackBar Saw chainSharpening your chain and adjusting raker clearance General information on sharpening cutting teethSharpening cutting teeth General advice on setting raker clearance Setting the raker clearanceTensioning the chain Lubricating cutting equipment Chain oilFilling with chain oil Lubricating the bar tip sprocket Checking chain lubricationLubricating the clutch drum bearing Checking wear on cutting equipmentWhat is kickback? HOW to Avoid KickbackDo not let go of the handles General rulesGeneral Safety Precautions Min m10 ft General Working Instructions Basic safety rulesCutting Basic cutting techniqueGeneral TermsFelling direction Tree felling techniqueSafe distance LimbingFelling Clearing the trunk and preparing your retreatCutting trees and branches that are in tension Preparations Freeing a tree that has fallen badly = high accident riskCutting the trunk into logs Freeing a Trapped treeWhat is WHAT? Mounting guide bar and chain AssemblyFuelmix Fuel HandlingFuelling Min 3 m10ft Cold engine Start and StopStart StopCarburetor MaintenanceTensioning the recoil spring Starter device assemblyStarter device Changing a broken or worn starter cordSpark plug Needle bearing maintenanceAir filter MufflerCooling system Centrifugal cleaning Air InjectionTemperature 0C or colder Temperature -5C or colderMonthly maintenance Weekly maintenance Daily maintenanceTechnical Data Your Warranty Rights Obligations Emission Control Warranty Statement2001W07

51 specifications

The Husqvarna 51 is a well-regarded chainsaw that has made its mark in the world of outdoor power equipment. Renowned for its balance of performance and usability, the Husqvarna 51 is often favored by both amateur woodcutters and professionals alike. This versatile chainsaw is designed for a range of tasks, from light-duty pruning to more demanding woodcutting jobs.

One of the standout features of the Husqvarna 51 is its powerful 2.3 horsepower engine. This robust engine allows the saw to tackle larger cuts with ease, making it a reliable tool for any woodcutting needs. Coupled with a lightweight design, the chainsaw ensures reduced fatigue during prolonged use, enhancing user comfort and efficiency.

The Husqvarna 51 utilizes a simple yet effective starting system known as the Smart Start technology. This feature minimizes resistance in the starter cord, allowing for easier and quicker engine starts. Consequently, even less experienced users can confidently get the saw up and running without unnecessary frustration.

Another important characteristic of this model is its air injection system. This technology works by using centrifugal force to remove larger debris from the air filter before it reaches the engine. As a result, the filter stays cleaner for longer, reducing the frequency of maintenance and ensuring optimal engine performance. This system significantly prolongs the life of the chainsaw while maintaining high power levels.

The Husqvarna 51 also features an adjustable oil pump that allows operators to control oil flow as needed. This ensures proper lubrication of the chain and bar, which is critical for maintaining performance and extending the lifespan of the cutting components. The saw’s chrome-plated cylinder further contributes to durability by providing an added layer of resistance against wear and tear.

Safety is a priority with the Husqvarna 51, which comes equipped with an inertia-activated chain brake. This feature automatically stops the chain in the event of kickback, providing additional peace of mind to the user. The front hand guard and ergonomic handle design also enhance user control, contributing to a safer and more comfortable cutting experience.

Overall, the Husqvarna 51 stands out as a reliable, sturdy, and user-friendly chainsaw. Its blend of power, technology, and safety features makes it an ideal choice for a variety of cutting tasks, making it popular among both casual users and seasoned professionals. Whether you are trimming branches or cutting firewood, this chainsaw offers the performance you need for effective woodcutting.
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