Jonsered 670, 625, 630 manual HOW to Avoid Kickback, What is kickback?

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SAFETY INSTRUCTIONS

H Bar

Check regularly:

•Whether there are burrs on the edges of the bar. Remove these with a file if necessary.

•Whether the groove in the bar has become badly worn. Replace the bar if necessary.

•Whether the tip of the bar is

uneven or badly worn. If a hollow forms on one side of the bar tip this is due to a slack chain.

•To prolong the life of the bar you should turn it over daily.

!MOST CHAIN SAW ACCIDENTS HAPPEN WHEN THE CHAIN TOUCHES THE OPERA- TOR.

•WEAR PERSONAL PROTECTIVE EQUIPMENT (see the section on ”Chain saw safety equipment” ).

•DO NOT TACKLE ANY JOB YOU ARE UNSURE OF (see the section on ”Personal protective equipment” , ”How to avoid kickback”, ” General working instructions” and ”Cutting equipment” ).

•AVOID SITUATIONS WHERE THERE IS A RISK OF KICKBACK (see the section on ”Personal protective equipment” ).

•USE THE RECOMMENDED PROTECTIVE EQUIPMENT AND CHECK ITS CONDITION (see section on ”General working instructions” ).

•CHECK THAT ALL SAFETY FUNCTIONS ARE WORKING (see section on ”General working instructions” and ”General safety precautions” ).

HOW TO AVOID KICKBACK

!Kickback can happen very suddenly and violently; kicking the saw, bar and chain back at the user. If this happens when the chain is moving it can cause very serious, even fatal injuries. It is vital you understand what causes kickback and that you can avoid it by taking care and using the right working technique.

What is kickback?

The word kickback is used to describe the sudden reaction that happens when the upper quadrant of the tip of the bar (known as the “kickback zone”) touches an object and the saw is kicked backwards.

Kickback always occurs in the cutting plane of the saw. Normally the saw and bar are thrown backwards and upwards towards the user. However the saw may move in a different direction depending on the way it was being used when the kickback zone of the bar touched the object.

Kickback only occurs if the kickback zone of the bar touches an object.

16 – English

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Contents Operator´s manual Symbols on the chain saw KEY to SymbolsSymbols in the operator’s manual Contents Safety Instructions Personal Protective EquipmentChain brake and front hand guard Chain catcher Throttle lockRight hand guard Vibration damping system Stop switchMuffler Checking brake band wear Checking the front hand guardChecking the automatic brake Checking the brake triggerThrottle lock Cutting Equipment 5 basic rulesCutting equipment designed to minimise kickback BarSaw chain Some terms that describe the bar and chainGeneral information on sharpening cutting teeth Sharpening your chain and adjusting raker clearanceSharpening cutting teeth Setting the raker clearance General advice on setting raker clearanceTensioning the chain Lubricating cutting equipment Chain oilFilling with chain oil Never use waste oilChecking chain lubrication Lubricating the clutch drum bearingChecking wear on cutting equipment Lubricating the bar tip sprocketHOW to Avoid Kickback What is kickback?Do not let go of the handles General rulesNever use the saw one- handed Min m 10 ftProlonged inhalation of exhaust gases from Engine, chain lubrication oil mist and/orBasic safety rules General Working InstructionsBasic cutting technique GeneralTerms CuttingTree felling technique Safe distanceLimbing Felling directionClearing the trunk and preparing your retreat FellingGeneral advice Freeing a tree that has fallen badly = high accident riskCutting the trunk into logs Freeing a Trapped treeWhat is WHAT? What is what?Mounting guide bar and chain AssemblyFitting a spike bumper Fuelmix Fuel HandlingChain oil Fuelling Start and Stop Start and stopMaintenance CarburettorStarter device assembly Starter deviceChanging a broken or worn starter cord Tensioning the recoil springNeedle bearing maintenance Air filterSilencer Spark plugCooling system Temperature -5C or colderWinter use Weekly maintenance Daily maintenance Monthly maintenance625 630 670 Technical DataBar and chain combinations Page 108 87

630, 670, 625 specifications

The Jonsered 625, 670, and 630 chainsaws represent a robust line of products designed specifically for both professional and amateur users who require reliability, power, and efficiency in their cutting tasks. These models are a testament to Jonsered's commitment to innovation and performance in the forestry and outdoor equipment sector.

The Jonsered 625 features a compact design, making it ideal for users who need a lightweight tool for trimming, pruning, or cutting smaller trees. This model is equipped with a powerful engine that delivers an impressive power-to-weight ratio, enabling users to handle tough jobs without feeling fatigued. One of the standout features of the 625 is its ergonomic design, including a comfortable handle and optimized balance, which significantly reduces operator strain during extended use.

Meanwhile, the Jonsered 670 is tailored for those who need a bit more power and capacity. It is versatile enough to handle medium-sized cutting tasks as well as heavy-duty use. This model is designed with advanced vibration dampening technology, minimizing vibrations transferred to the user's hands, thus enhancing comfort and precision. The 670 also incorporates the Easy Start system, which makes starting the saw simple, even after long periods of inactivity.

The Jonsered 630 stands at the higher end of this trio, aimed at professional users who demand peak performance. With an increased engine size and enhanced cutting speed, the 630 can tackle larger trees and tougher materials with ease. This model features a high-performance air filtration system that ensures the engine remains clean and runs efficiently. Additionally, the 630 incorporates a centrifugal air cleaning system that prolongs service intervals and reduces maintenance needs.

All three models come equipped with cutting-edge technologies such as the X-Torq engine, which lowers fuel consumption and exhaust emissions, making them environmentally friendly options in today's market. These chainsaws incorporate safety features like chain brakes and low kickback chains, ensuring user safety during operation.

In summary, the Jonsered 625, 670, and 630 chainsaws each offer distinct advantages catering to various user needs, from homeowners tackling light-duty tasks to professionals requiring robust, high-performance machinery. The blend of technology, ergonomic design, and safety ensures that Jonsered continues to be a trusted name in outdoor power equipment. These chainsaws not only deliver superior cutting performance but also provide a seamless user experience.
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