User manual YAMAHA F50HP-2002

[. . . ] F50A T50A OWNER'S MANUAL U. S. A. Edition LIT-18626-04-72 E EMU01449 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. [. . . ] Always wear eye protection when working near batteries. NOTE: Batteries vary among manufacturers. Therefore the following procedures may not always apply. Consult your battery manufacturer's instructions. 1) Disconnect and remove the battery from the boat. Always disconnect the black negative lead first to prevent the risk of shorting. Fill each cell to the upper level with distilled water. Store the battery on a level surface in a cool, dry, well-ventilated place out of direct sunlight. Once a month, check the specific gravity of the electrolyte and recharge as required to prolong battery life. 2) 3) 4) 4-7 E EMU00913 PERIODIC MAINTENANCE w Be sure to turn off the engine when you perform maintenance unless otherwise specified. If the owner is not familiar with machine servicing, this work should be done by a Yamaha dealer or other qualified mechanic. Maintenance, replacement, or repair of the emission control devices and systems may be performed by any marine engine repair establishment or individual. All warranty repairs, however, including those to the emission control system, must be performed by an authorized Yamaha marine dealership. A service manual is available for purchase through a Yamaha dealer for owners who have the mechanical skills, tools, and other equipment necessary to perform maintenance not covered by this owner's manual. EMK33011 REPLACEMENT PARTS If replacement parts are necessary, use only genuine Yamaha parts or equivalents of the same type and of equivalent strength and materials. Any part of inferior quality may malfunction, and the resulting loss of control could endanger the operator and passengers. Yamaha genuine parts and accessories are available from a Yamaha dealer. 4-8 E EMK30510* MAINTENANCE CHART Frequency of maintenance operations may be adjusted according to the operating conditions, but the following table gives general guidelines. The mark (q) indicates the check-ups which you may carry out yourself. The mark (1) indicates work to be carried out by your Yamaha dealer. Interval Item Spark plug Greasing points Gear oil Fuel system Fuel filter Fuel tank Idling speed Anode Outboard motor exterior Cooling water passages Propeller Timing belt Battery Power trim and tilt Ignition timing Bolts and nuts Engine oil Oil filter Valve clearance Thermostat Cleaning/Adjustment/ Replacement Greasing Change Inspection Inspection/Replacement Cleaning Adjustment Inspection/Replacement Inspection Cleaning Inspection Inspection Inspection Inspection Inspection/Adjustment Retightening Change Change Inspection/Adjustment Inspection Initial 10 hours q q q q 1 q q q q (every month) q 1 1 q 1 q Every Refer page 4-11 4-10 4-24 4-13 4-14 4-25 4-16 4-27 4-31 4-5 4-22 4-19 4-28 q q 1 1 q 1 1 1 4-21 -- 4-31 4-17 -- -- -- 50 hours 100 hours 200 hours (3 months) (6 months) (1 year) q q q q q q q q 1 q q q 1 NOTE: 8 When operating in salt water, turbid or muddy water, the engine should be flushed with clean water after each use. 8 If leaded gasoline is usually used, engine valves and related parts should be inspected after every 300 hours of operation in addition to the items on the maintenance chart above. 4-9 E EMU00366 GREASING Yamaha marine grease (Water resistant grease) 000567 4-10 E EMU01202 CLEANING AND ADJUSTING SPARK PLUG w When removing or installing a spark plug, be careful not to damage the insulator. A damaged insulator could allow external sparks, which could lead to explosion or fire. The spark plug is an important engine component and is easy to inspect. The condition of the spark plug can indicate something about the condition of the engine. For example, if the center electrode porcelain is very white, this could indicate an intake air leak or carburetion problem in that cylinder. [. . . ] don't forget to include any important information such as names, addresses, model, engine serial number, dates, and receipts. CHANGE OF ADDRESS The federal government requires each manufacturer of a motor vehicle to maintain a complete, up-to-date list of all first purchasers against the possibility of a safety-related defect and recall. This list is complied from the purchase registrations sent to Yamaha Motor Corporation, U. S. A. by the selling dealer at the time of your purchase. [. . . ]