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From inside (document excerpt):
40 50 OWNER’S MANUAL U.S.A.Edition LIT-18626-06-58 63B-28199-1E EMU25060 ZMU01690 Read this owner’s manual carefully before operating your outboard motor. Important manual information EMU31280 To the owner Thank you for choosing a Yamaha outboard motor. This Owner’s Manual contains information needed for proper operation, maintenance and care. A thorough understanding of these simple instructions will help you obtain maximum enjoyment from your new Yamaha.
If you have any question about the operation or maintenance of your outboard motor, please consult a Yamaha dealer. In this Owner’s Manual particularly important information is distinguished in the following ways. The Safety Alert Symbol means ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED! EWM00780 al, please consult your Yamaha dealer. NOTE: The 40TR, 50TR and the standard accessories are used as a base for the explanations and illustrations in this manual. Therefore some items may not apply to every model. EMU25110 WARNING Failure to follow WARNING instructions could result in severe injury or death to the machine operator, a bystander, or a person inspecting or repairing the outboard motor. ECM00700 40, 50 OWNER’S MANUAL 2005 by Yamaha Motor Corporation, USA 1st edition, April 2005 Any reprinting or unauthorized use without the written permission of Yamaha Motor Corporation, USA is expressly prohibited. Printed in Japan P/N LIT-18626-06-58 CAUTION: A CAUTION indicates special precautions that must be taken to avoid damage to the outboard motor. NOTE: A NOTE provides key information to make procedures easier or clearer. Yamaha continually seeks advancements in product design and quality. Therefore, while this manual contains the most current product information available at the time of printing, there may be minor discrepancies between your machine and this manual. If there is any question concerning this manu- Table of contents General information 1 Identification numbers record . 1 Outboard motor serial number 1 Key number . 1 Trim tab with anode . 16 Trim rod (tilt pin) 17 Tilt support lever for power trim and tilt or hydro tilt model 17 Top cowling lock lever(s) (turn type) 17 Tachometer . 18 Digital tachometer . 18 Oil level indicators (three indicators 2) 18 Oil level indicator (digital type) 18 Overheat warning indicator (digital type) 19 Trim meter . 19 Trim meter (digital type) 19 Hour meter (digital type) 19 Emission control information 1 North American models . 1 Safety information 2 Important labels 3 Warning labels 3 Basic boating rules (Rules of the road) . 4 Steering and sailing rules and sound signals 4 Rules when encountering vessels 4 Other special situations . 5 Fueling instructions 7 Gasoline 8 Engine oil 8 Warning system . 20 Overheat warning 20 Oil level warning and oil filter clogging warning . 21 Battery requirement 8 Battery specifications 8 Propeller selection 8 Start-in-gear protection 9 Basic components 10 Main components . 10 Fuel tank . 10 Fuel joint . 11 Fuel gauge 11 Fuel tank cap 11 Air vent screw . 11 Remote control 11 Remote control lever . 11 Neutral interlock trigger . 12 Neutral throttle lever 12 Tiller handle 12 Gear shift lever 12 Throttle grip . 13 Throttle indicator . 13 Throttle friction adjuster . 13 Engine stop lanyard switch . 14 Engine stop button 14 Main switch . 15 Power trim and tilt switch on remote control or tiller handle . 15 Power trim and tilt switch on bottom engine cowling 16 Operation . 23 Installation 23 Mounting the outboard motor 23 Clamping the outboard motor 24 Breaking in engine . 25 Gasoline and engine oil mixing chart (50:1) 25 Procedure for oil injection models. 25 Preoperation checks 26 Fuel . 26 Oil 26 Controls . 26 Engine . 26 Operation after a long period of storage 26 Filling fuel and engine oil . 27 Filling fuel for portable tank . 27 Ring Free Fuel Additive . 27 Filling oil for electric start models 28 Oil level indicator operation . 29 Operating engine . 29 Feeding fuel (portable tank) 29 Starting engine 30 Warming up engine 33 Electric start and prime start Table of contents models 33 Shifting . 33 Forward (tiller handle and remote control models) . 33 Reverse (automatic reverse lock and power trim and tilt models). 34 Stopping engine . 34 Procedure . 35 Trimming outboard motor . 35 Adjusting trim angle 36 Adjusting boat trim 37 Tilting up and down 37 Procedure for tilting up 38 Procedure for tilting down . 39 Cruising in shallow water . 40 Power trim and tilt models / power tilt models . 40 Water leakage . 53 Checking power trim and tilt / power tilt system . 53 Checking propeller 53 Removing the propeller . 54 Installing the Propeller . 55 Changing gear oil 55 Cleaning fuel tank . 56 Inspecting and replacing anode(s) 57 Checking battery (for electric start models) 57 Connecting the battery 58 Disconnecting the battery 59 Checking top cowling 59 Coating the boat bottom 59 Cruising in other conditions 41 Maintenance . 42 Specifications . 42 Transporting and storing outboard motor 43 Clamp screw mounting models . 43 Storing outboard motor . 43 Procedure . 44 Lubrication (oil injection models). 45 Cleaning and anticorrosion measures 45 Battery care . 45 Cleaning the outboard motor 46 Checking painted surface of motor . 46 Trouble Recovery 60 Troubleshooting . 60 Temporary action in emergency 63 Impact damage . 63 Replacing fuse 63 Power trim and tilt / power tilt will not operate 64 Starter will not operate 64 Emergency starting engine . 65 Engine fails to operate . 66 Cold engine fails to start 66 Treatment of submerged motor . 67 Procedure 67 Periodic maintenance . 46 Replacement parts 46 Maintenance chart 47 Greasing . 49 Cleaning and adjusting spark plug . 49 Checking fuel system 50 Inspecting fuel filter . 51 Cleaning fuel filter . 51 Inspecting idling speed . 52 Checking water in engine oil tank. 52 Checking wiring and connectors . 52 Exhaust leakage .