Yamaha FT9.9 (E/ER)D 1990 Schematics

As a spare parts specialist, we understand the importance of having accurate and reliable information to help you diagnose and repair your Yamaha Outboard Motor. The following schematics are designed to provide you with detailed diagrams and exploded views of the various components that make up your FT9.9 (E/ER)D 1990 model.

Cylinder - Crankcase

The cylinder and crankcase schematic provides a comprehensive overview of the internal workings of your engine. This diagram shows the relationships between the various components, including the pistons, cylinders, and crankshaft, as well as the location of vital parts such as the spark plug and oil pump.

Crankshaft - Piston

This schematic focuses on the crankshaft and piston assembly, providing a detailed look at the internal workings of your engine's powertrain. This diagram shows the relationships between the pistons, cylinders, and crankshaft, as well as the location of vital parts such as the connecting rods and bearings.

Valve

The valve schematic provides a detailed look at the intake and exhaust valves that control airflow into and out of your engine. This diagram shows the relationships between the valves, cylinders, and crankshaft, as well as the location of vital parts such as the valve springs and retainers.

Intake

The intake schematic focuses on the air intake system, providing a detailed look at the carburetor and fuel system components that supply air to your engine. This diagram shows the relationships between the air filter, carburetor, and fuel tank, as well as the location of vital parts such as the throttle linkage and governor.

Carburetor

The carburetor schematic provides a detailed look at the fuel-air mixture process that takes place within your engine's intake system. This diagram shows the relationships between the carburetor components, including the float bowl, jets, and venturi, as well as the location of vital parts such as the throttle linkage and governor.

Manual Starter

The manual starter schematic provides a detailed look at the mechanical starter system that powers your engine's starting mechanism. This diagram shows the relationships between the starter motor, gears, and solenoid, as well as the location of vital parts such as the starter clutch and bearings.

Fuel System

The fuel system schematic focuses on the fuel tank, lines, and components that supply fuel to your engine. This diagram shows the relationships between the fuel tank, carburetor, and fuel pump, as well as the location of vital parts such as the fuel filter and fuel line clamps.

Top Cowling

The top cowling schematic provides a detailed look at the upper housing that surrounds your engine's internal components. This diagram shows the relationships between the cowling panels, fasteners, and gaskets, as well as the location of vital parts such as the spark plug wires and ignition coil.

Bottom Cowling

The bottom cowling schematic focuses on the lower housing that supports your engine's internal components. This diagram shows the relationships between the cowling panels, fasteners, and gaskets, as well as the location of vital parts such as the oil pan and transmission components.

Bracket 1

The bracket 1 schematic provides a detailed look at the various brackets and mounting points that secure your engine's external components. This diagram shows the relationships between the brackets, fasteners, and gaskets, as well as the location of vital parts such as the steering system and control linkage.

Bracket 2

The bracket 2 schematic focuses on the additional brackets and mounting points that support your engine's external components. This diagram shows the relationships between the brackets, fasteners, and gaskets, as well as the location of vital parts such as the steering system and control linkage.

Steering

The steering schematic provides a detailed look at the steering system that controls your outboard motor's direction and speed. This diagram shows the relationships between the steering components, including the tiller arm, tie rods, and drag link, as well as the location of vital parts such as the steering gear and hydraulic fluid reservoir.

Control Engine

The control engine schematic focuses on the electrical system that powers your outboard motor's ignition, starting, and accessories. This diagram shows the relationships between the various components, including the ignition coil, starter motor, and battery, as well as the location of vital parts such as the wiring harness and fuse box.

Upper Casing

The upper casing schematic provides a detailed look at the top housing that surrounds your outboard motor's internal components. This diagram shows the relationships between the casing panels, fasteners, and gaskets, as well as the location of vital parts such as the spark plug wires and ignition coil.

Lower Drive 1

The lower drive 1 schematic focuses on the transmission components that transmit power from your outboard motor to the propeller. This diagram shows the relationships between the transmission components, including the gears, bearings, and seals, as well as the location of vital parts such as the propeller shaft and bearing.

Lower Drive 2

The lower drive 2 schematic provides a detailed look at the additional transmission components that support your outboard motor's power delivery. This diagram shows the relationships between the transmission components, including the gears, bearings, and seals, as well as the location of vital parts such as the propeller shaft and bearing.

C.D.I. Magneto

The C.D.I. magneto schematic focuses on the ignition system that generates the spark necessary to ignite your engine's fuel-air mixture. This diagram shows the relationships between the magneto components, including the rotor, stator, and pick-up coil, as well as the location of vital parts such as the spark plug wires and ignition coil.

C.D.I. Magneto (FT9.9E)

The C.D.I. magneto (FT9.9E) schematic provides a detailed look at the electronic ignition system that powers your engine's starting and running processes. This diagram shows the relationships between the magneto components, including the rotor, stator, and pick-up coil, as well as the location of vital parts such as the spark plug wires and ignition coil.

Starting Motor

The starting motor schematic focuses on the electric starter system that powers your engine's starting mechanism. This diagram shows the relationships between the starter motor components, including the gear reduction, solenoid, and bearings, as well as the location of vital parts such as the starter clutch and battery.

Oil System

The oil system schematic provides a detailed look at the lubrication system that supplies oil to your engine's internal components. This diagram shows the relationships between the oil pump, filter, and reservoir, as well as the location of vital parts such as the oil lines and fittings.

Note: The above information is for general knowledge purposes only. It should not be used for actual repair or maintenance procedures without consulting the relevant service manual and seeking professional assistance if necessary.