User manual MAKITA DCS4301

[. . . ] Instruction Manual DCS3500 DCS3501 DCS4300 DCS4301 Important: Read this instruction manual carefully before putting the chain saw into operation and strictly observe the safety regulations!Keep this instruction manual! Thank you for purchasing a MAKITA product! Congratulations on choosing a MAKITA chain saw!We are conÞdent that you will be satisÞed with this modern piece of equipment. The DCS3500-DCS4301 are very handy and robust chain saws with a new Design. [. . . ] Push the sprocket guard quick tensioner (2) in again and tighten by turning clockwise. 2 3 Release the sprocket guard chain tensioner until it turns freely, then fold it in between protective ribs (15) as shown in the illustration. 15 17 STOP Checking the chain tension The tension of the chain is correct if the chain rests against the bottom side of the guide bar and can still be easily turned by hand. While doing so the chain brake must be released. Check the chain tension frequently - new chains tend to get longer during use!When checking the chain tension the engine must be switched off. NOTE: It is recommended to use 2-3 chains alternatively. In order to guarantee uniform wear of the guide bar the bar should be turned over whenever replacing the chain. 2 Retensioning the saw chain All that is necessary to retension the saw chain is to loosen the quick tensioner (2) slightly as described under "Mounting the guide bar and saw chain". Tension the chain as already described. Chain brake The DCS3500-DCS4301 comes with an inertia chain brake as standard equipment. If kickback occurs due to contact of the guide-bar tip with wood (see SAFETY PRECAUTIONS, page 6), the chain brake will stop the chain through inertia if the kickback is sufÞciently strong. The chain will stop within a fraction of a second. The chain brake is installed to block the saw chain before starting it and to stop it immediately in case of an emergency. IMPORTANT: NEVER run the saw with the chain brake activated (except for testing, see "Testing chain brake")!Doing so can very quickly cause extensive engine damage!ALWAYS release the chain brake before starting the work! 2 1 Engaging the chain brake (braking) If the kickback is strong enough the sudden acceleration of the guide bar combined with the inertia of the hand guard (1) will automatically actuate the chain brake. 1 To engage the chain brake manually, simply push the hand guard (1) forward (towards the tip of the saw) with your left hand (arrow 1). Releasing the chain brake Pull the hand guard (1) towards you (arrow 2) until you feel it catch. The brake is now released. 18 Fuel CAUTION: This saw is powered by mineral-oil products (gasoline and oil). Be especially careful when handling gasoline . Do not smoke (explosion hazard). Gasoline 40:1 50:1 100:1 Fuel mixture The engine of the chain saw is a high-efÞciency two-stroke engine. It runs on a mixture of gasoline and two-stroke engine oil. The engine is designed for unleaded regular gasoline with a min. In case no such fuel is available, you can use fuel with a higher octane value. In order to obtain an optimum engine output and to protect your health and the environment use unleaded fuel only. For lubricating the engine use a two-stroke engine oil (quality grade: JASO FC or ISO EGD), which is added to the fuel. [. . . ] Cylinder base packing ring defective, radial shaft packings defective, cylinder or piston rings defective Spark plug does not seal. Spring in starter broken, broken parts inside the engine. Wrong carburetor adjustment. Compression system Inside Outside Mechanical malfunction Warm start difÞculties Carburetor Starter does not engage Fuel tank is Þlled Ignition spark Fuel tank is Þlled Engine starts, but dies immediately Fuel supply Wrong idling adjustment, suction head or carburetor dirty. Tank venting defective, fuel line interrupted, cable defective, Combination switch defective, Decompression valve dirty InsufÞcient power Several systems may be involved simultaneously Oil tank/pump Engine is idling Air Þlter dirty, wrong carburetor adjustment, mufßer clogged, exhaust channel in cylinder clogged, spark arrester screen clogged. [. . . ]