Engine Maintenance Chapter 7 - Quiz

Engine Maintenance 1.The three major subassemblies of the outboard marine engine are the: a.power head, intermediate housing, and the drive housing. b.lower unit, drive housing, and the intermediate housing. c.power head, lower unit, and intermediate housing. d.lower unit, outer housing, and power head. 2

Engine Maintenance 2.The subassembly of the outboard engine that provides a means for attaching the engine to the boat is the: a.lower unit. b.intermediate housing. c.power head. d.outer housing. 3

Engine Maintenance 3.The subassembly of the outboard engine that operates under the water is the: a.power head. b.drive housing. c.intermediate housing. d.lower unit. 4

Engine Maintenance 4.The subassembly of the outboard engine that usually contains the transmission for forward and reverse thrust as well as a neutral gear is the: a.power head. b.drive housing. c.intermediate housing. d.lower unit. 5

Engine Maintenance 5.The two basic configurations for outboard engines are: a.2-cycle and 4-cycle. b.saltwater and fresh water. c.portable and fixed mounted. d.propeller driven and jet driven. 6

Engine Maintenance 6.The crankcase design for outboard engines differs from the inboard engine in that the outboard crankcase operates: a.with greater torque. b.in a vertical mode. c.without lubrication. d.without main bearings. 7

Engine Maintenance 7.A 2-cycle outboard will generally have more ___________ per pound of weight than the four stroke outboard. a.parts b.torque c.compression d.power 8

Engine Maintenance 8.A 2-cycle outboard engine: a.has exhaust valves in the power head. b.has exhaust ports in the cylinder walls. c.does not have piston rings. d.does not require lubrication. 9

Engine Maintenance 9.The purpose of the carburetor used with outboard engines is to: a.control carbon in the engine. b.provide correct fuel and air mixture. c.pump fuel from the fuel tank. d.provide timing to the engine. 10

Engine Maintenance 10.Carburetors used on outboard engines are generally of the: a.single barrel design. b.two barrel design. c.four barrel design. d.multi-port design. 11

Engine Maintenance 11.Fuel used in 2-cycle gasoline outboards must be mixed with: a.additives. b.alcohol. c.ethanol. d.oil. 12

Engine Maintenance 12.The three basic ignition systems currently in use for outboard engines are: a.solid state, magneto, and permanent magnet. b.solid state, distributor/breaker point, and permanent magnet. c.solid state, magneto, and distributor/breaker point. d.distributor/breaker point, magneto, and permanent magnet. 13

Engine Maintenance 13.Lubrication for 4-cycle outboard engines requires: a.oil to be mixed with the fuel. b.a separate oil reservoir. c.wet-sump operation. d.a simple oil pan reservoir. 14

Engine Maintenance 14.In an outboard mechanical shifting transmission the engagement between the clutch and forward or reverse gear results in: a.positive and smooth load transfer. b.time lag between forward and reverse motion. c.slippage or power loss in the transmission. d.sudden shock and impact loads in the transmission. 15

Engine Maintenance 15.A major difference between outboard engine drive systems and the inboard/outboard stern drive system is stern drives: a.are not attached to a boat's transom. b.have no reverse capability. c.are permanently attached through an opening in the transom. d.have no tilt capability. 16

Engine Maintenance 16.The two factors that affect the trim of a boat powered by an outboard engine are the: a.horsepower of the engine and the diameter of the propeller. b.diameter of the propeller and the loading of the boat. c.horsepower of the engine and the tilt of the outboard motor. d.loading of the boat and the tilt of the outboard motor. 17

Engine Maintenance 17.As a minimum, stern drives and the lower unit of outboard engines should be checked and serviced: a.only at the start of the boating season. b.twice during the boating season. c.only at the close of the boating season. d.once every 30 days. 18

Engine Maintenance 18.Sacrificial zinc anodes should be replaced: a.if they are more than 50% consumed. b.only at the start of the boating season. c.when 75% consumed. d.only when laying-up the boat. 19

Engine Maintenance 19.What steps should be taken if moisture or contaminants are found in the lubricant of the lower unit or stern drive? a.Find the cause, make repairs, and replace the lubricant. b.Flush the lower unit or stern drive and replace the lubricant. c.Add more lubricant to force the moisture or contaminants out. d.Drain and flush the lower unit or stern drive and add more lubricant. 20