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90
Yamaha 90 User Manual
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Maintenance
49
EMU28931
Greasing
Yamaha marine grease (Water resistant grease)
90
Throttle link / throttle
cable / throttle pic
k-up
timing
Inspection / adjustment
W
ater pump
Inspection / replace-
ment
Oil pump
Inspection / adjustment
Oil tank water drain
Inspection / cleaning
Spark plug(s)
Cleaning / adjustment /
replacement
Item
Actions
Initial
Every
10 hours
(1 month)
50 hours
(3
months)
100
hours (6
months)
200
hours (1
year)
ZMU03879
©
2019 Yamaha Motor Corporation, U.S.A.
53
55
Table of Contents
Table of Contents
4
General Information
6
Identification Numbers Record
6
Outboard Motor Serial Number
6
Key Number
6
Emission Control Information
6
North American Models
6
Safety Information
7
Important Labels
8
Warning Labels
8
Basic Boating Rules (Rules of the Road)
9
Steering and Sailing Rules and Sound Signals
9
Rules When Encountering Vessels
9
Other Special Situations
10
Fueling Instructions
12
Gasoline
13
Engine Oil
13
Battery Requirement
13
Battery Specifications
13
Propeller Selection
13
Start-In-Gear Protection
14
Basic Components
15
Main Components
15
Fuel Tank
15
Fuel Joint
16
Fuel Gauge
16
Fuel Tank Cap
16
Air Vent Screw
16
Remote Control
16
Remote Control Lever
16
Neutral Interlock Trigger
17
Neutral Throttle Lever
17
Tiller Handle
17
Gear Shift Lever
17
Throttle Grip
18
Throttle Indicator
18
Throttle Friction Adjuster
18
Engine Stop Lanyard Switch
19
Engine Stop Button
19
Main Switch
20
Power Trim and Tilt Switch on Remote Control or Tiller Handle
20
Power Trim and Tilt Switch on Bottom Engine Cowling
21
Trim Tab with Anode
21
Trim Rod (Tilt Pin)
22
Tilt Support Lever for Power Trim and Tilt or Hydro Tilt Model
22
Top Cowling Lock Lever(S) (Turn Type)
22
Flushing Device
23
Warning Indicator
23
Tachometer
23
Digital Tachometer
23
Oil Level Indicators (Three Indicators)
24
Oil Level Indicator (Digital Type)
24
Overheat Warning Indicator (Digital Type)
24
Trim Meter
24
Trim Meter (Digital Type)
25
Hour Meter (Digital Type)
25
Warning System
25
Overheat Warning
25
Oil Level Warning and Oil Filter Clogging Warning
26
Operation
28
Installation
28
Mounting the Outboard Motor
28
Breaking in Engine
29
Gasoline and Engine Oil Mixing Chart (50:1)
29
Procedure for Oil Injection Models
29
Preoperation Checks
30
Fuel
30
Oil
30
Controls
30
Engine
30
Operation after a Long Period of Storage
30
Filling Fuel and Engine Oil
31
Filling Fuel for Portable Tank
31
Ring Free Fuel Additive
31
Filling Oil for Electric Start Models
31
Oil Level Indicator Operation
33
Operating Engine
33
Feeding Fuel (Portable Tank)
33
Starting Engine
34
Warming up Engine
37
Electric Start and Prime Start Models
37
Shifting
37
Forward (Tiller Handle and Remote Control Models)
37
Reverse (Automatic Reverse Lock and Power Trim and Tilt Models)
38
Stopping Engine
38
Procedure
39
Trimming Outboard Motor
39
Adjusting Trim Angle
40
Adjusting Boat Trim
41
Tilting up and down
42
Procedure for Tilting up
42
Procedure for Tilting down
44
Cruising in Shallow Water
44
Power Trim and Tilt Models / Power Tilt Models
44
Cruising in Other Conditions
45
Maintenance
47
Specifications
47
Transporting and Storing Outboard Motor
48
Storing Outboard Motor
48
Procedure
48
Lubrication (Oil Injection Models)
49
Cleaning and Anticorrosion Measures
50
Battery Care
50
Flushing Power Unit
50
Cleaning the Outboard Motor
51
Checking Painted Surface of Motor
51
Periodic Maintenance
52
Replacement Parts
52
Maintenance Chart
53
Greasing
54
Cleaning and Adjusting Spark Plug
55
Checking Fuel System
55
Inspecting Fuel Filter
56
Cleaning Fuel Filter
56
Inspecting Idling Speed
57
Checking Water in Engine Oil Tank
57
Checking Wiring and Connectors
58
Exhaust Leakage
58
Water Leakage
58
Checking Power Trim and Tilt System
58
Checking Propeller
59
Removing the Propeller
60
Installing the Propeller
60
Changing Gear Oil
61
Cleaning Fuel Tank
62
Inspecting and Replacing Anode(S)
62
Checking Battery (for Electric Start Models)
63
Connecting the Battery
64
Disconnecting the Battery
64
Checking Top Cowling
65
Coating the Boat Bottom
65
Trouble Recovery
66
Troubleshooting
66
Temporary Action in Emergency
69
Impact Damage
69
Replacing Fuse
69
Power Trim and Tilt / Power Tilt will Not Operate
70
Starter will Not Operate
70
Emergency Starting Engine
71
Engine Fails to Operate
72
Ignition System Malfunction
72
Cold Engine Fails to Start
72
Treatment of Submerged Motor
74
Procedure
74
Consumer Information
75
Important Warranty Information for U.S.A. and Canada
75
Yamaha Motor Corporation, U.s.a. Outboard Motor Two Year Limited Warranty
77
Important Warranty Information if You Use Your Yamaha Outside the Usa or Canada
80
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Yamaha 90 Specifications
General
Brand
Yamaha
Model
90
Category
Outboard Motor
Language
English
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