Starting the engineCold-starting the DCS 430,431, DCS 520, DCS 540:The carburetors of these saws have a choke valve for coldstarting (mixture enrichment).To make it easier to start, the chain saw DCS 431 is equippedwith a semi-automatic starting valve (W5). Pushing this valvein reduces the amount of compression effort needed, so that itis easier to bring the engine up to starting speed when pullingthe starter cable. The highpressureincrease in the combustionchamber that results from the first ignitions will automaticallyclose the starting valve (button pops back out).Model DCS 430, DCS 520 do not have a startlng valve.Starting and carburetor adjustment are as for model DCS431 except without tho Instruction 'Push tho startingvalve".- Put the short-circuit ignition switch in the 'I' position (Ell).- Pull out the choke (812).- Depressthehalf-throttlelockbutton(W3)half-way andhold.- Depress the throttle (814)and half-throttle lock button (en)all the way. Release the throttle - it will now be held athalf-throttle by the lock button.Push the starting valve (815)(only DCS 431).Slowly pull out the starter cable until you notice resistance(the piston is positioned before the top dead center).Now pull the starter cable with a fast and forceful movementuntil you hear the first ignition.---CAUTION: Do not pull out the starter cable more than approx.50 cm. and lead it back by hand.- When you hear the first ignition, push the choke (BM) in.Push the starting valve again (only DCS 431) and pull thestarter cable. As soon as the engine is running, pressthe throttle (W4)to release the half-throttle lock (W3).allowing the engine to idle.CAUTION: As soon as the engine is started it must be put inidle to prevent the chain brake from being damaged.-22Now release the chain brake.- Move at least 10 feet (3m) away from the place where you \-,fuelled the saw.- Makesureyou have agoodfooting, and placethesaw on theground in such a way that the chain is not touching anything.- Engage the chain brake (lock).- Holdthe tubular handletightly wlth one hand and press thechain saw to the ground.- Steady the rear handle by standing in the hand guard.Cold-starting the DCS 520i and DCS 5200i:The carburetors of these saws have a fuel-injection system(injection carburetor) for cold starting (mixture enrichment).These two cold-starting systems work differently.----.Put the short-circuit ignition switch in the "I'position (Wl).Pull out the choke (BE) (opens the injection valve).Depressthe half-throttlelock button (W3)half-wayand hold.Depress the throttle (W4)and half-throttle lock button (W3)all the way. Release the throttle - it will now be held athalf-throttle by the lock button.Note: If the temperature is below -15" C (5' F) start at fullthrottle.- Slowly pull out the starter cable until you notice resistance(the piston is positionedbefore the top dead center).- Now pull the starter Able with a fast and forceful movementuntil you hear the first ignition.CAUTION: Do not pull out the starter cable more than approx.50 cm. and lead it back by hand.- Push in the choke (BM) when the engine starts, or after thefirst audible ignitions.- If the engine has not yet started, keep pulling the starter<:;cable until it does.- As soon as the engine is running, press the throttle (W4)to rgreleasethe half-throttlelock(B/3), allowingtheengine to idle.CAWION: As soon as the engine is started it must be put inidle to prevent the chain brake from being damaged.-Warm starting (all models):-&Now release the chain brake.As described above for cold starting, but without usingthe choke (W2). Keep the choke in.Starting under special conditions(MAKITA DCS 520i and DCS 5200i only):In conditions of high ambient temperature and when the enginehas been stopped for only a short,period following fulCloadoperation, if afuel with alow boiling point is used (winter fuel). andat high altitudesespecially,the heat couldprevent the enginefromstarting immediately. If this happens, proceed as follows:- Pull out the choke (BE)and start the engine at half-throttle.as described for cold starting.- When the engine has started. release the chain brakeImmediately and gun the engine all the way several timesuntil it runs smoothly.Now push in the choke (812).-If the engine won't start:If the engine refuses to start even after a number of tries, checkthe spark plug (seethe section on "Replacingthe spark plug").Stopping the engine-@Put the short-circuitingswitch (ell)in position "0" (STOP).