0279080 LOWER MOTOR COVER & SEAL ASSEMBLY EVINRUDE
55972A
LOWER
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55972A
EVINRUDE
BRP EVINRUDE entire parts catalog list:
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Fuel System
Duplex Fuel Filter System (3412 Engines)
CONTROL LEVER IN "FLOW BOTH" POSITIONThe duplex fuel filter system makes it possible to change filter elements when the engine is in operation without a shutdown.When the fuel pressure gauge indicator is in the RED range, the fuel filters must be changed.The steps that follow give instructions for the operation of the duplex fuel system.1. With lever at "AUX. RUN" position, start engine. Left gauge should indicated full pressure. Right gauge should indicate no pressure.2. With lever at "LH FLOW - RH FILL" position, left gauge should indicate full pressure. Within five minutes running, the right gauge should indicate a very small amount of pressure.3. With lever at "FLOW BOTH" position, both gauges should indicate full pressure. Look for leaks.4. With lever at "RH FLOW - LH FILL" position, left gauge should indicate a very small amount of pressure. Right gauge should indicate full pressure.5. With lever at "MAIN RUN" position, left gauge should indicate no pressure. Right gauge should indicate full pressure.6. The lever should be in the "MAIN RUN" position for normal operation.Electrical System
The engine electrical system has two separate circuits: the charging circuit and the starting circuit. Some of the electrical system components are used in more than one circuit. The battery (batteries), disconnect switch, circuit breaker, ammeter, cables and wires from the battery are all common in each of the circuits.The charging circuit is in operation when the engine is running. An alternator makes electricity for the charging circuit. A voltage regulator in the circuit controls the electrical output to keep the battery at full charge.
The disconnect switch, if so equipped, must be in the ON position to let the electrical system function. There will be damage to some of the charging circuit components if the engine is running with the disconnect switch in the OFF position.
If the machine has a disconnect switch, the starting circuit can operate only after the disconnect switch is put in the ON position.The starting circuit is in operation only when the start switch is activated.The low amperage circuit and the charging circuit are both connected through the ammeter. The starting circuit is not connected through the ammeter.Charging System Components
Alternator (Delco-Remy)
The alternator is driven by V-type belts from the crankshaft pulley. This alternator is a three phase, self-rectifying charging unit, and the regulator is part of the alternator.This alternator design has no need for slip rings or brushes, and the only part that has movement is the rotor assembly. All conductors that carry current are stationary. The conductors are: the field winding, stator windings, six rectifying diodes, and the regulator circuit components.The rotor assembly has many magnetic poles like fingers with air space between each opposite pole. The poles have residual magnetism (like permanent magnets) that produce a small amount of magnetlike lines of force (magnetic field) between the poles. As the rotor assembly begins to turn between the field winding and the stator windings, a small amount of alternating current (AC) is produced in the stator windings from the small magnetic lines of force made by the residual magnetism of the poles. This AC current is changed to direct current (DC) when it passes through the diodes of the rectifier bridge. Most of this current goes to charge the battery and to supply the low amperage circuit, and the remainder is sent on to the field windings. The DC current flow through the field windings (wires around an iron core) now increases the strength of the magnetic lines of force. These stronger lines of force now increase the amount of AC current produced in the stator windings. The increased speed of the rotor assembly also increases the current and voltage output of the alternator.The voltage regulator is a solid state (transistor, stationary parts) electronic switch. It feels the voltage in the system and switches on and off many times a second to control the field current (DC current to the field windings) for the alternator to make the needed voltage output.
DELCO-REMY ALTERNATOR
1. Regulator. 2. Roller bearing. 3. Stator winding. 4. Ball bearing. 5. Rectifier bridge. 6. Field winding. 7. Rotor assembly. 8. Fan.Alternator (Motorola)
The alternator is a three phase, self-rectifying charging unit that is driven by V-type belts. The only part of the alternator that has movement is the rotor assembly. Rotor assembly (4) is held in position by a ball bearing at each end of the rotor shaft.
MOTOROLA ALTERNATOR
1. Slip rings. 2. Fan. 3. Stator assembly. 4. Rotor assembly. 5. Brush and holder assembly.The alternator is made up of a front frame at the drive end, rotor assembly (4), stator assembly (3), rectifier assembly, brushes and holder assembly (5), slip rings (1) and rear end frame. Fan (2) provides heat removal by the movement of air through the alternator.Rotor assembly (4) has field windings (wires around an iron core) that make magnetic lines of force when direct current (DC) flows through them. As the rotor assembly turns, the magnetic lines of force are broken by stator assembly (3). This makes alternating current (AC) in the stator. The rectifier assembly has diodes that change the alternating current (AC) from the stator to direct current (DC). Most of the DC current goes to charge the battery and make a supply for the low amperage circuit. The remainder of the DC current is sent to the field windings through the brushes.Voltage Regulator (Motorola)
The voltage regulator is not fastened to the alternator, but is mounted separately and is connected to the alternator with wires. The regulator is a solid state (transistor, stationary parts) electronic switch.It feels the voltage in the system and switches on and off many times a second to control the field current (DC current to the field windings) for the alternator to make the needed voltage output. There is a voltage adjustment for this regulator to change the alternator output.Starting System Components
Solenoid
A solenoid is a magnetic switch that does two basic operations: a. Closes the high current starter motor circuit with a
Duplex Fuel Filter System (3412 Engines)
CONTROL LEVER IN "FLOW BOTH" POSITIONThe duplex fuel filter system makes it possible to change filter elements when the engine is in operation without a shutdown.When the fuel pressure gauge indicator is in the RED range, the fuel filters must be changed.The steps that follow give instructions for the operation of the duplex fuel system.1. With lever at "AUX. RUN" position, start engine. Left gauge should indicated full pressure. Right gauge should indicate no pressure.2. With lever at "LH FLOW - RH FILL" position, left gauge should indicate full pressure. Within five minutes running, the right gauge should indicate a very small amount of pressure.3. With lever at "FLOW BOTH" position, both gauges should indicate full pressure. Look for leaks.4. With lever at "RH FLOW - LH FILL" position, left gauge should indicate a very small amount of pressure. Right gauge should indicate full pressure.5. With lever at "MAIN RUN" position, left gauge should indicate no pressure. Right gauge should indicate full pressure.6. The lever should be in the "MAIN RUN" position for normal operation.Electrical System
The engine electrical system has two separate circuits: the charging circuit and the starting circuit. Some of the electrical system components are used in more than one circuit. The battery (batteries), disconnect switch, circuit breaker, ammeter, cables and wires from the battery are all common in each of the circuits.The charging circuit is in operation when the engine is running. An alternator makes electricity for the charging circuit. A voltage regulator in the circuit controls the electrical output to keep the battery at full charge.
The disconnect switch, if so equipped, must be in the ON position to let the electrical system function. There will be damage to some of the charging circuit components if the engine is running with the disconnect switch in the OFF position.
If the machine has a disconnect switch, the starting circuit can operate only after the disconnect switch is put in the ON position.The starting circuit is in operation only when the start switch is activated.The low amperage circuit and the charging circuit are both connected through the ammeter. The starting circuit is not connected through the ammeter.Charging System Components
Alternator (Delco-Remy)
The alternator is driven by V-type belts from the crankshaft pulley. This alternator is a three phase, self-rectifying charging unit, and the regulator is part of the alternator.This alternator design has no need for slip rings or brushes, and the only part that has movement is the rotor assembly. All conductors that carry current are stationary. The conductors are: the field winding, stator windings, six rectifying diodes, and the regulator circuit components.The rotor assembly has many magnetic poles like fingers with air space between each opposite pole. The poles have residual magnetism (like permanent magnets) that produce a small amount of magnetlike lines of force (magnetic field) between the poles. As the rotor assembly begins to turn between the field winding and the stator windings, a small amount of alternating current (AC) is produced in the stator windings from the small magnetic lines of force made by the residual magnetism of the poles. This AC current is changed to direct current (DC) when it passes through the diodes of the rectifier bridge. Most of this current goes to charge the battery and to supply the low amperage circuit, and the remainder is sent on to the field windings. The DC current flow through the field windings (wires around an iron core) now increases the strength of the magnetic lines of force. These stronger lines of force now increase the amount of AC current produced in the stator windings. The increased speed of the rotor assembly also increases the current and voltage output of the alternator.The voltage regulator is a solid state (transistor, stationary parts) electronic switch. It feels the voltage in the system and switches on and off many times a second to control the field current (DC current to the field windings) for the alternator to make the needed voltage output.
DELCO-REMY ALTERNATOR
1. Regulator. 2. Roller bearing. 3. Stator winding. 4. Ball bearing. 5. Rectifier bridge. 6. Field winding. 7. Rotor assembly. 8. Fan.Alternator (Motorola)
The alternator is a three phase, self-rectifying charging unit that is driven by V-type belts. The only part of the alternator that has movement is the rotor assembly. Rotor assembly (4) is held in position by a ball bearing at each end of the rotor shaft.
MOTOROLA ALTERNATOR
1. Slip rings. 2. Fan. 3. Stator assembly. 4. Rotor assembly. 5. Brush and holder assembly.The alternator is made up of a front frame at the drive end, rotor assembly (4), stator assembly (3), rectifier assembly, brushes and holder assembly (5), slip rings (1) and rear end frame. Fan (2) provides heat removal by the movement of air through the alternator.Rotor assembly (4) has field windings (wires around an iron core) that make magnetic lines of force when direct current (DC) flows through them. As the rotor assembly turns, the magnetic lines of force are broken by stator assembly (3). This makes alternating current (AC) in the stator. The rectifier assembly has diodes that change the alternating current (AC) from the stator to direct current (DC). Most of the DC current goes to charge the battery and make a supply for the low amperage circuit. The remainder of the DC current is sent to the field windings through the brushes.Voltage Regulator (Motorola)
The voltage regulator is not fastened to the alternator, but is mounted separately and is connected to the alternator with wires. The regulator is a solid state (transistor, stationary parts) electronic switch.It feels the voltage in the system and switches on and off many times a second to control the field current (DC current to the field windings) for the alternator to make the needed voltage output. There is a voltage adjustment for this regulator to change the alternator output.Starting System Components
Solenoid
A solenoid is a magnetic switch that does two basic operations: a. Closes the high current starter motor circuit with a