7 OPERATING THE ENGINE ENGLISH B Fuel REVERSED ENGINE REVOLUTION AND REMEDIES To avoid personal injury: A Fluid escaping from pinholes may be invisible. Do not use hands to search for suspected leaks; Use a piece of cardboard or wood, instead. If injured by escaping fluid, see a medical doctor at once. This fluid can produce gangrene or a severe allergic reaction. A Check any leaks from fuel pipes or fuel injection pipes. Use eye protection when checking for leaks. To avoid personal injury: A Reversed engine operation can make the machine reverse and run it backwards. It may lead to serious trouble.
A Reversed engine operation may make exhaust gas gush out into the intake side and ignite the air cleaner; It could catch fire. Reversed engine revolution must be stopped immediately since engine oil circulation is cut quickly, leading to serious trouble. Be careful not to empty the fuel tank. Otherwise air may enter the fuel system, requiring fuel system bleeding. (See "FUEL" in "PERIODIC SERVICE" section.) B How to tell when the engine starts running backwards 1. Lubricating oil pressure drops sharply. Oil pressure warning light, if used, will light. 2. Since the intake and exhaust sides are reversed, the sound of the engine changes, and exhaust gas will come out of the air cleaner. 3.
A louder knocking sound will be heard when the engine starts running backwards. B Color of exhaust While the engine is run within the rated output range: A The color of exhaust remains colorless. A If the output slightly exceeds the rated level, exhaust may become a little colored with the output level kept constant. A If the engine is run continuously with dark exhaust emission, it may lead to trouble with the engine. B Remedies 1. Immediately set the engine stop lever to the "STOP" position to stop the engine. 2. After stopping the engine, check the air cleaner, intake rubber tube and other parts, and then replace parts as needed.
B Immediately stop the engine if; A The engine suddenly slows down or accelerates. A Unusual noises are suddenly heard. A Exhaust fumes suddenly become very dark. A The oil pressure lamp or the water temperature alarm lamp lights up.