Yamaha 50HEDO - Page 2

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EMU25050

Read this owner’s manual carefully before operating your outboard motor.

Main Page

Table of Contents4
General Information7
Identification Numbers Record7
Outboard Motor Serial Number7
Key Number7
EC Label7
Safety Information8
Important Labels9
Warning Labels9
Fueling Instructions9
Gasoline10
Engine Oil10
Battery Requirement10
Battery Specifications10
Propeller Selection10
Start-In-Gear Protection11
Basic Components12
Main Components12
Fuel Tank14
Fuel Joint15
Fuel Gauge15
Fuel Tank Cap15
Air Vent Screw15
Remote Control15
Remote Control Lever15
Neutral Interlock Trigger16
Neutral Throttle Lever16
Tiller Handle16
Gear Shift Lever16
Throttle Grip17
Throttle Indicator17
Throttle Friction Adjuster17
Engine Stop Lanyard Switch18
Engine Stop Button18
Choke Knob for Pull Type19
Manual Starter Handle19
Main Switch19
Steering Friction Adjuster19
Steering Friction Adjuster20
Power Trim and Tilt Switch on Remote Control or Tiller Handle20
Power Trim and Tilt Switch on Bottom Engine Cowling20
Trim Tab with Anode21
Trim Rod (Tilt Pin)21
Tilt Lock Mechanism21
Tilt Support Lever for Power Trim and Tilt or Hydro Tilt Model22
Tilt Support Lever for Manual Tilt Model22
Top Cowling Lock Lever(S) (Turn Type)22
Warning Indicator for Three Indicators23
Warning Indicator23
Tachometer23
Digital Tachometer23
Oil Level Indicators (Three Indicators 2)24
Oil Level Indicator (Digital Type)24
Overheat Warning Indicator24
Overheat Warning Indicator (Digital Type)24
Trim Meter25
Trim Meter (Digital Type)25
Hour Meter (Digital Type)25
Warning System26
Overheat Warning26
Oil Level Warning and Oil Filter Clogging Warning27
Operation29
Installation29
Mounting the Outboard Motor29
Clamping the Outboard Motor30
Breaking in Engine31
Gasoline and Engine Oil Mixing Chart (50:1)31
Procedure for Oil Injection Models31
Preoperation Checks32
Fuel32
Oil32
Controls32
Engine32
Operation after Long Period of Storage32
Filling Fuel and Engine Oil33
Filling Fuel for Portable Tank33
Filling Oil for Manual Starter Model33
Filling Oil for Electric Start Models34
Oil Level Indicator Operation35
Operating Engine36
Feeding Fuel (Portable Tank)36
Starting Engine37
Warming up Engine40
Choke Start Models40
Electric Start and Prime Start Models40
Shifting41
Forward (Tiller Handle and Remote Control Models)41
Reverse (Automatic Reverse Lock and Power Trim and Tilt Models)41
Reverse (Manual Tilt and Hydro Tilt Models)42
Stopping Engine43
Procedure43
Trimming Outboard Motor43
Adjusting Trim Angle for Manual Tilt Models44
Adjusting Trim Angle45
Adjusting Trim Angle for Hydro Tilt Models45
Adjusting Boat Trim46
Tilting up and down47
Procedure for Tilting up47
Procedure for Tilting up (Hydro Tilt Models)48
Procedure for Tilting up48
Procedure for Tilting down50
Procedure for Tilting down (Manual and Hydro Tilt Models)50
Cruising in Shallow Water51
Hydro Tilt Models51
Power Trim and Tilt Models / Power Tilt Models52
Cruising in Other Conditions53
Maintenance54
Specifications54
Transporting and Storing Outboard Motor56
Clamp Screw Mounting Models57
Storing Outboard Motor57
Procedure57
Lubrication (Oil Injection Models)58
Battery Care58
Cleaning the Outboard Motor59
Checking Painted Surface of Motor59
Periodic Maintenance59
Replacement Parts59
Maintenance Chart61
Greasing62
Cleaning and Adjusting Spark Plug63
Checking Fuel System64
Inspecting Fuel Filter65
Cleaning Fuel Filter65
Inspecting Idling Speed66
Checking Water in Engine Oil Tank66
Checking Wiring and Connectors67
Exhaust Leakage67
Water Leakage67
Checking Power Trim and Tilt System67
Checking Propeller68
Removing the Propeller69
Installing the Propeller69
Changing Gear Oil70
Cleaning Fuel Tank71
Inspecting and Replacing Anode(S)71
Checking Battery (for Electric Start Models)72
Connecting the Battery73
Disconnecting the Battery73
Checking Top Cowling73
Coating the Boat Bottom74
Trouble Recovery75
Troubleshooting75
Temporary Action in Emergency78
Impact Damage78
Replacing Fuse78
Power Trim and Tilt will Not Operate79
Starter will Not Operate79
Emergency Starting Engine80
Emergency Starting Engine81
Engine Fails to Operate82
Cold Engine Fails to Start82

Yamaha 50HEDO - Page 2

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