In the owners manual it states that "The green oil pressure indicator light turns off and the buzzer sounds when the oil level is low and/or the engine lubrication system is faulty. The engine speed slows down gradually". My oil light comes on and the beeper is on while the engine is running fairly good. What the heck is the problem.?<br />Also, what mechanical part causes the motor to slow down. ?<br /><br />Please help.<br />Thanks<br />Leonard