Periodic maintenance and adjustment8-10123456789101112Panel BTo remove the panel1. Remove the bolts and washers.2. Pull the panel outward as shown.To install the panelPlace the panel in the original position,and then install the washers and bolts.EAU19653Checking the spark plugsThe spark plugs are important enginecomponents, which should be checkedperiodically, preferably by a Yamahadealer. Since heat and deposits willcause any spark plug to slowly erode,they should be removed and checkedin accordance with the periodic mainte-nance and lubrication chart. In addition,the condition of the spark plugs can re-veal the condition of the engine.The porcelain insulator around the cen-ter electrode of each spark plug shouldbe a medium-to-light tan (the ideal colorwhen the vehicle is ridden normally),and all spark plugs installed in the en-gine should have the same color. If anyspark plug shows a distinctly differentcolor, the engine could be operating im-properly. Do not attempt to diagnosesuch problems yourself. Instead, havea Yamaha dealer check the vehicle.If a spark plug shows signs of electrodeerosion and excessive carbon or otherdeposits, it should be replaced.1. Bolt2. Washer1 21 21. Panel B1Specified spark plug:NGK/CPR9EA9
