Jonsered 630, 625, 670 manual Cutting equipment designed to minimise kickback, Bar, Saw chain

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SAFETY INSTRUCTIONS

1Cutting equipment designed to minimise kickback

!Faulty cutting equipment or the wrong combination of bar and chain increases the risk of kickback. Use only the bar and chain combinations recommended in the ”Technical data” section.

The only way to avoid kickback is to make sure that the kick- back zone of the bar never touches anything.

By using cutting equipment with “built-in” kickback protection and keeping the chain sharp and well-maintained you can reduce the effects of kickback.

A Bar

The smaller the tip radius the smaller the kickback zone and the lower the chance of kickback.

B Saw chain

A saw chain is made up of a number of links, which are available in standard and low-kickback versions.

None

Standard Low-kickback

CUTTING LINK

DRIVE LINK

SIDE LINK

Combining these links in different ways gives different degrees of kickback reduction. In terms of kickback reduction alone, four different types of link are available.

Kickback reduction

Cutting link

Drive link

Side link

LOW

STANDARD

HIGH

EXTRA HIGH

CSome terms that describe the bar and chain

When the cutting equipment supplied with your saw becomes worn or damaged you will need to replace it. Use only the type of bar and chain recommended by us. See the ”Technical data” section to find out which equipment is recommended for your saw.

Bar

• LENGTH (inches/cm)

• NUMBER OF TEETH ON BAR TIP SPROCKET (T). Small number = small tip radius = low-kickback

• CHAIN PITCH (inches) The spacing between the drive links of the chain must match the spacing of the teeth on the bar tip sprocket and drive sprocket.

NUMBER OF DRIVE LINKS The number of drive links is determined by the length of the bar, the chain pitch and

the number of teeth on the bar tip sprocket.

• BAR GROOVE WIDTH (inches/mm)

The groove in the bar must match the width of the chain drive links.

• SAW CHAIN OIL HOLE AND HOLE FOR CHAIN TENSIONER

The bar must be matched to the chain saw design.

Saw chain

• SAW CHAIN PITCH (inches)

Spacing between drive links.

• DRIVE LINK WIDTH (mm/ inches)

• NUMBER OF DRIVE LINKS

• LEVEL OF KICKBACK REDUCTION

The level of kickback reduction offered by a chain is indicated by its model number.

See the ”Technical data”

section to find the model numbers of chains that are recommended for use with your saw.

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Contents Operator´s manual Symbols in the operator’s manual KEY to SymbolsSymbols on the chain saw Contents Personal Protective Equipment Safety InstructionsChain brake and front hand guard Right hand guard Throttle lockChain catcher Muffler Stop switchVibration damping system Checking the brake trigger Checking brake band wearChecking the front hand guard Checking the automatic brakeThrottle lock 5 basic rules Cutting EquipmentSome terms that describe the bar and chain Cutting equipment designed to minimise kickbackBar Saw chainSharpening cutting teeth Sharpening your chain and adjusting raker clearanceGeneral information on sharpening cutting teeth Tensioning the chain General advice on setting raker clearanceSetting the raker clearance Never use waste oil Lubricating cutting equipmentChain oil Filling with chain oilLubricating the bar tip sprocket Checking chain lubricationLubricating the clutch drum bearing Checking wear on cutting equipmentWhat is kickback? HOW to Avoid KickbackNever use the saw one- handed General rulesDo not let go of the handles Engine, chain lubrication oil mist and/or Min m10 ft Prolonged inhalation of exhaust gases fromGeneral Working Instructions Basic safety rulesCutting Basic cutting techniqueGeneral TermsFelling direction Tree felling techniqueSafe distance LimbingFelling Clearing the trunk and preparing your retreatFreeing a Trapped tree General adviceFreeing a tree that has fallen badly = high accident risk Cutting the trunk into logsWhat is what? What is WHAT?Fitting a spike bumper AssemblyMounting guide bar and chain Chain oil Fuel HandlingFuelmix Fuelling Start and stop Start and StopCarburettor MaintenanceTensioning the recoil spring Starter device assemblyStarter device Changing a broken or worn starter cordSpark plug Needle bearing maintenanceAir filter SilencerWinter use Temperature -5C or colderCooling system Monthly maintenance Weekly maintenance Daily maintenanceBar and chain combinations Technical Data625 630 670 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.