Owner's Manual 2011 CR/WR/XC 125/150 - Husqvarna

SPARK CONTROLUse NGK BR9EG or CHAMPION QN84; spark plug (2); the gapis 0,6 in.A wider gap may cause difficulties in starting engine and inoverloading coil.A gap that is too narrow may cause difficulties when accelerating,when idling the engine or when performing at lowspeeds.Clean the dirt away from the base of the spark plug before removingit from the cylinder after removing the cap (1).It is very useful to examine the state of the spark plug just after ithas been removed from the engine since the deposits on the plugand the colour of the insulator provide useful indications.Correct heat rating:The tip of the insulator should be dry and the colour should be lightbrown or grey.High heat rating:In this case, the insulator tip is dry and covered with dark deposits.Low heat rating:In this case, the spark plug is overheated and insulator tip is vitreous,white or grey in colour.CAUTION*: Select a spark plug with a colder orhotter heat range carefully and cautiously. Aspark plug with too hot a heat range may leadto preignition and possible engine damage. Aspark plug with too cold a heat range may foulas the result of too much carbon buildup.Before refitting the plug, thoroughly clean theelectrodes and the insulator using a brass-metalbrush.Apply a little graphite grease to the spark plugthread; fit and screw the spark plug by handthen tighten to the torque of 23,5÷25,5 Nm-17,3÷18,8 ft/lb.Spark plugs which have cracked insulators orcorroded electrodes should be replaced.ENVOLTAGE REGULATOR (WR)Voltage regulator (1) is secured onto a special plate positionedunder fuel tank.1223