Husqvarna 440e, 435e manual Throttle lockout, Chain catcher

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GENERAL SAFETY PRECAUTIONS

If the kickback is less violent or the kickback zone of the bar is closer to you the chain brake is designed to be activated manually by the movement of your left hand.

In the felling position the left hand is in a position that makes manual activation of the chain brake impossible. With this type of grip, that is when the left hand is placed so that it cannot affect the movement of the front hand guard, the chain brake can only be activated by the inertia action.

Will my hand always activate the chain brake during a kickback?

No. It takes a certain force to move the hand guard forward. If your hand only lightly touches the front guard or slips over it, the force may not be enough to trigger the chain brake. You should also maintain a firm grip of the chain saw handles while working. If you do and experience a kickback, your hand may never leave the front handle and will not activate the chain brake, or the chain brake will only activate after the saw has swung around a considerable distance. In such instances, the chain brake might not have enough time to stop the saw chain before it touches you.

There are also certain positions in which your hand cannot reach the front hand guard to activate the chain brake; for example, when the saw chain is held in felling position.

Will my inetria activated chain brake always activate during kickback in the event of a kickback?

No. First your brake must be in working order. Testing the brake is simple, see instructions under the heading Checking, maintaining and servicing chain saw safety equipment. We recommend you do before you begin each work session. Second the kickback must be strong enough to activate the chain brake. If the chain brake is too sensitive it would activate all the time which would be a nuisance.

Will my chain brake always protect me from injury in the event of a kickback?

No. First, the chain brake must be in working order to provide the intended protection. Second, it must be activated during the kickback as described above to stop the saw chain. Third, the chain brake may be activated but if the bar is too close to you the brake might not have enough time to slow down and stop the chain before the chain saw hits you.

Only you and proper working technique can eliminate kickback and its danger.

Throttle lockout

The throttle lockout is designed to prevent accidental operation of the throttle control. When you press the lock

(A)(i.e. when you grasp the handle) it releases the throttle control (B). When you release the handle the throttle control and the throttle lockout both move back to their original positions. This arrangement means that the throttle control is automatically locked at the idle setting.

Chain catcher

The chain catcher is designed to catch the chain if it snaps or jumps off. This should not happen if the chain is properly tensioned (see instructions under the heading Assembly) and if the bar and chain are properly serviced and maintained (see instructions under the heading General working instructions).

115 10 81-95 Rev.1 2008-01-08

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Contents 445 445e 450e Symbols on the machine KEY to SymbolsSymbols in the operator’s manual You will find the following labels on your chain sawContents Dear customer IntroductionWhat is what on the chain saw? What is WHAT?Before using a new chain saw General Safety PrecautionsAlways use common sense Machine′s safety equipmentPersonal protective equipment Chain brake and front hand guardGeneral Safety Precautions Chain catcher Throttle lockoutRight hand guard Stop switchVibration damping system MufflerGeneral rules Cutting equipmentCutting equipment designed to reduce kickback BarGeneral information on sharpening cutting teeth Sharpening your chain and adjusting depth gauge settingIncreased if the depth gauge setting is General advice on adjusting depth gauge settingAdjustment of depth gauge setting Too largeBar and cause serious or even fatal injury Tensioning the chain445 445e, 450eLubricating cutting equipment Filling with chain oilChecking chain lubrication Chain drive sprocket Needle bearing lubricationChecking wear on cutting equipment Fitting the bar and chain Assembly445 445e, 450e115 10 81-95 Rev.1 Fuel Fuel HandlingFueling Fuel safetyTransport and storage Long-term storageStarting and Stopping Starting and stoppingStarting Stopping Working Techniques Basic safety rulesBefore use General working instructionsGeneral rules Terms Basic cutting techniqueLimbing Tree felling techniqueLog is supported at one end. There is a high risk Safe distanceFelling direction Clearing the trunk and preparing your retreatDirectional cuts Felling cut How to avoid kickback What is kickback?Freeing a tree that has fallen badly Cutting the trunk into logs Maintenance Carburetor adjustmentGeneral Checking the inertia brake release Muffler Starter Replacing the starter cordTensioning the recoil spring Replacing the return and drive springs Air filterFitting the starter Recoil spring aLubricating the bar tip sprocket Spark plugNeedle bearing lubrication Cooling systemAir Injection centrifugal cleaning Temperature -5C 23F or colderWinter use Daily maintenance Weekly maintenance Monthly maintenance Maintenance scheduleTechnical data Technical DataSaw chain filing and file gauges Bar and chain combinations050/1,3 mm 058/1,5 mmYour Warranty Rights and Obligations Federal Emission Control Warranty StatementSafety precautions for chain saw American Standard Safety PrecautionsOther safety precautions Kickback safety precautionsPage 1151081-95