User manual APRILIA MXV 450

[. . . ] This motorbike has come to completely change the concept of a motocross bike; it is innovative, able to ensure high performance and fun under any condition of use. Aprilia's main purpose is, in fact, to manufacture bikes featuring advanced technology, absolutely safe and capable of keeping its value along time. iMPORTANT RECOMMENDATIONS ON HOW TO USE THE VEHICLE aprilia MXV motorbikes have been conceived and manufactured to be used at professional racing. Therefore, they comply with the regulations and categories currently being used by the most important international motorcycle federations. [. . . ] FORK BLEEDING The front fork must be fully extended to bleed air: · 03_08 39 loosen screw (3) locate on the stem cover; wait until all air is purged; tighten screw (3); Repeat the operation for both stems. In order to ensure enhanced reliability and performance along time, special attention should be given to the first riding day or during the first 2 hours the vehicle is used. During this time, avoid setting off at too high a speed or sudden accelerations. These procedures have to be carried out each time: · Pistons are replaced piston rings are replaced cylinder liners are replaced crankshaft, main bearings and connecting rod bushings are replaced. Starting up the engine (03_09) The starter and idle speed adjustment functions are electronically managed by the stepper motor. Therefore, the start-up procedure is the same for cases when the engine is cold or warm. Kick the start pedal; start from the upper section of the pedal travel and push it as far as it will go, firmly but not violently (do not exert excessive force when kicking) Stop the engine by holding down button (1) for one second. As soon as button (1) is pressed, the engine increases revs before it comes to a complete stop. This behaviour is to be considered normal and is used so that the stepper motor can follow the alignment procedure for the next start-up. RANDOM ENGINE STOP In case of random engine stop (clutch suddenly released, fall, etc. Upon the next start-up, the engine will increase revs for about one second. This behaviour is to be considered normal and is used so that the stepper motor can follow the alignment procedure. Engine oil level Engine oil level check (04_01) Keep the vehicle upright with the two wheels on the ground. MAX = maximum level MIN = minimum level · 04_01 The correct oil level is near the MAX mark. Stop the engine and let it cool off so that the oil in the crankcase flows down and cools as well. Place a container to collect the oil underneath the engine oil 49 Unscrew and remove the oil drainage plug (2) and then drain all the engine oil. Unscrew and remove the oil drainage plug (3) and then drain all the engine oil. Replace spark plug (2) if its insulator is cracked, the electrodes show signs of corrosion or excessive deposits or the top of the central electrode gets rounded. Make sure the washer is in good conditions; replace the spark plug when damaged. Once the washer is fitted, screw the spark plug (2) manually to avoid damaging the thread. Make each spark plug (2) complete 1/2 of a turn to compress the washer. Position the spark plug tube (1) correctly so that it does not get detached due to engine vibrations. [. . . ] Check that vertical oscillation at the middle point between pinion and crown on the lower part of the chain is of about 20 ÷ Move the vehicle forward so as to check vertical oscillation in other positions too. If the slack is uniform, but higher or lower than 20 ÷ If you need to adjust chain tension after the check: · Loosen both lock nuts (4). Checking wear of chain, front and rear sprockets (04_38) Also check the following parts and make sure that the chain, pinion and crown do not have: · Check the chain upper slider (1) for wear, as well as the chain guide slider (2), the lower slider (3) and the chain roller (4). Do not wash the chain with water jets, vapour jets, high-pressure water jets and highly flammable solvents. [. . . ]