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Periodic Inspection And Adjustment [Predelivery Service] [1994]

Applicable Models

Model GroupYearModelSerial
Yamaha Outboard199470hpAll
Yamaha Outboard199460hpAll
Yamaha Outboard199490hpAll
Periodic Inspection And Adjustment [Predelivery Service] [1994]
Yamaha Marine

CONTENTS

020000 0

Item/Model 50, 60, 70 hp 80, 90 hp Refer page
1. Packing list O O 3-1
2. Electric wiring O O 3-2
3. Fuel line (gasoline and oil) O O 3-6
4. Gear oil level O O 3-7
5. Operation of controls and moving parts O O 3-7
6. Air bleeding of the oil injection pump - O 3-8
7. Fuel leakage O O 3-8
8. Water leakage O O 3-8
9. Exhaust leakage O O 3-8
10. Engine and lower unit noise O O 3-8
11. Idle-speed O O 3-9
12. Ignition timing O O 3-9
13. Motor exterior O O 3-9
14. Instructing the new owner O O 3-9

PACKING LIST

021000-0

On unpacking, check that all accessories to the model are included.

Packing\Model 50, 60, 70 hp 80, 90 hp
Outboard motor O O
Fuel tank O*1 O*1
Remote control box O*1 O*1
Service tools O*1 O*1
Emergency starter rope O O
Meter O O
Motor mounting parts O O
Remote control cables - -
Spare spark plugs O*1 O*1
Owner's manual O O

*1: Except for U.S.A.

ELECTRICAL WIRING

022000-0

Check that all leads and connectors are properly connected.

50, 60, 70 hp
(1) Clamp
(2) Power trim and tilt motor lead*
(3) Trim sensor lead*
(4) Power trim and tilt switch coupler*
(5) Power trim and tilt switch*
[A] To wire harness
[B] To power trim and tilt motor*
[C] To trim sensor*
[D] To lighting coil
*For P.T.T. model

B : Black
L : Blue
Lg : Light green
R : Red
Sb: Sky blue

P60TH/60FEMTO
(1) Main switch
(2) Engine stop switch
(3) Neutral switch
(4) Starter relay

[A] To trim sensor
[B] To oil level sensor
[C] To starter motor
[D] To battery
[E] To wire harness
[F] To earth bracket

B :Black
L :Light green
G :Green
G/R:Green/Red
G/W:Green/White
Lg :Light green
O :Orange
P :Pink
P/B:Pink/Black
R :Red
Sb :Sky blue
W :White
Y :Yellow

(1) Pulser coil coupler
(2) Trim sensor coupler
(3) Oil level sensor coupler
(4) Wire harness coupler
(5) Ground lead from rectifier regulator
(6) Ground lead from starter relay
(7) Ground lead from wire harness
(8) Power trim and tilt relay coupler*
(9) Charge coil coupler
(10) Crank position sensor coupler
[A] To C.D.I. unit
[B] To power trim and tilt motor*
[C] To trim sensor
[D] To oil level sensor
[E] To meter
[F] To electrothermal valve
[G] To power trim and tilt switch*
*For P.T.T. model

B :Black
Br :Brown
G :Green
Gy :Gray
L :Blue
Lg :Light green
O :Orange
P :Pink
R :Red
Sb :Sky blue
W :White
Y :Yellow

80, 90 hp
(1) Power trim and tilt switch coupler*
[A] To electrothermal valve
[B] To battery
[C] To starter relay
[D] To lighting coil
[E] To wire harness
[F] To meter
[G] To trim sensor
[H] To power trim and tilt motor*

  • For P.T.T. model

B : Black
Lg : Light green
R : Red
Sb : Sky blue

(1) Crank position sensor coupler
(2) Clamp
(3) Clamp
(4) Wire harness coupler
(5) Trim sensor coupler
(6) Oil level sensor coupler
(7) Clamp
(8) Ground lead from power trim and tilt relay*
(9) Ground lead from wire harness
(10) Ground lead from rectifier regulator
(11) Charge coil coupler
(12) Power trim and tilt relay coupler
(13) Pulser coil coupler
(14) Ground lead from starter relay
(15) Ground lead from C.D.I. unit
[A] To electrothermal valve
[B] To trim sensor
[C] To power trim and tilt motor*
[D] To oil level sensor
[E] To meter
[F] To starter motor
[G] To power trim and tilt switch*
*For P.T.T. model

B :Black
Br :Brown
G :Green
Gy :Gray
L :Blue
Lg :Light green
O :Orange
P :Pink
R :Red
Sb :Sky blue
W :White
Y :Yellow

FUEL LINE

D22500-0
Check that the fuel line is correctly installed.

50, 60, 70 hp

(1) Oil tank
(2) Oil injection pump
(3) Carburetor
(4) Fuel filter
(5) Fuel pump

80, 90 hp

(1) Oil tank
(2) Oil injection pump
(3) Carburetor
(4) Fuel filter
(5) Fuel pump

GEAR OIL LEVEL

D23000-0

Remove the oil-drain plug (1) and oil-level plug (2) and add the specified gear oil through the oil-drain hole until it overflows from the oil-level hole. Re-fit the plugs. (The oil level plug first.)

NOTE:
Be sure the motor is positioned straight up when checking the oil level.


OPERATION OF CONTROLS AND MOVING PARTS

023500-0

  1. Check for correct operation of the shift control.

  2. Check for correct operation of the tilt lock mechanism.

  3. Check for smooth operation of the steering control.

  4. Check for smooth operation of the throttle control.

  5. Check for correct operation of the spark advancer.

  6. Check for correct operation of the power trim and tilt unit. (P.T.T. model)

  7. Check for correct operation of the choke system.

  8. Noting the following WARNING and CAUTION, check for correct operation of the starting system.

WARNING
Before attempting to check the starter system, replace the propeller with the specified test propeller, and make the tests with the motor placed in a test tank.


Test propeller: YB-1620/90890-01620

CAUTION:
Use a 50 :1 gasoline-oil mixture to start the engine.


  1. Check for correct operation of the engine stop system.

AIR-BLEEDING OF THE OIL INJECTION PUMP (80, 90 hp)

D24000-1

  1. Pour the specified oil into the oil tank and loosen the air-bleeding screw attached to the oil injection pump.

  2. After confirming that oil starts over flowing through the screw-hole, tighten the screw completely.

  3. Noting the following CAUTION, start the engine and keep it running at idle speed.

CAUTION:
Use a 50 :1 gasoline-oil mixture to start the engine.


  1. Check that oil flows through the oil feed pipes.

FUEL LEAKAGE

D24500-0
Check for fuel leakage.

WATER LEAKAGE

D25000-0
Check for water leakage.

EXHAUST LEAKAGE

D25600-0
Check for exhaust leakage.

ENGINE AND LOWER UNIT NOISE

D26000-0

Check the engine and lower unit for abnormal noise.

IDLE-SPEED

D26500-0

Check that the engine speed at fully-closed throttle is correct.

IGNITION TIMING

027000-0

Check that the ignition timing at fully closed and fully-open throttle positions are correct.

MOTOR EXTERIOR

027500-0

Check the motor exterior for any flaking of the paint and if necessary, touch-up with paint of the original color.

INSTRUCTING THE NEW OWNER

028000-1

Instruct the new owner on the operation of all controls and the break-in procedure. Also advise him on propeller-to-boat matching.