YAMAHA OUTBOARD FAQ

how to troubleshoot a yamaha outboard?
1. Examine the connections between the engine and the battery. Sometimes wiring comes loose, and this prevents the power needed to start the motor getting into the engine. Tighten ...
how to rebuild a yamaha outboard?
1. Consult the manual for your outboard motor. If you cannot find the original, call your nearest Yamaha customer support center. It can mail, e-mail or provide a link to your desi...
how to break in yamaha outboards?
1. Limit the throttle setting to about half-throttle for the first hour. Watch the tachometer -- the optimum speed for the first hour is 2,000 rpm during the first hour. 2. Hold th...
how to repair yamaha outboard motors?
1. Use the electric starter. If the starter will not operate, there may be a problem with the outboard's electrical system. 2. Begin the electrical system check by ensuring that th...
how to winterize a yamaha outboard engine?
1. Add a fuel stabilizer to a Yamaha engine, but first make sure you fill up the gas tank. During the winter months it’s easy for water to seep inside your engine. Watered down gas...
how to install a propeller on a yamaha outboard?
1. Disconnect the spark plug wires from the spark plugs to avoid an inadvertent motor start. Propeller injuries can be severe, and even fatal: don't take a chance with this. 2. Put...
how to paint an outboard motor on a yamaha?
1. Cover any parts of the Yamaha engine that you don't want to paint with low-tack painter's tape. Cover the decals as well if you want to protect them from paint. 2. Clean the eng...
how to check the oil on a yamaha outboard?
1. Take a look at the tachometer and identify if it is a digital model or an analog model. The digital model shows block-like icons on a display and the analog version has a set of...
how to adjust a yamaha outboard carburetor?
1. Loosen the cam follower roller screw, allowing the follower to move without restriction. 2. Locate the idle stop screw, located halfway down the throttle lever, and loosen its l...
how to align a twin yamaha outboard?
1. Calculate how far apart the outboards would need to be from the centerline. Call Yamaha customer support for the proper spacing information. Leave 22-inches between 2 to 3 cylin...
how to clean yamaha outboard injectors?
1. Locate the gas cap on your Yamaha outboard motor, and remove it by gripping it and twisting it counter-clockwise. Make sure that the tank is full. If it's not full, fill it. 2. ...
how to troubleshoot a yamaha outboard alarm?
1. Turn the ignition key to the start position and pull the safety lanyard. If the horn is operative, it will sound. 2. Disconnect the pink lead and black lead from the temperature...
how to rebuild a yamaha outboard carburetor?
1. Remove the engine cover and then use a Phillips screwdriver to loosen the fuel primer bulb hose clamp on the engine. Pull the hose off. 2. Use a pair of pliers to remove the thr...
how to select a propeller for a yamaha outboard?
1. Read your motor operator's manual; in most Yamaha manuals, you'll find the "full throttle operating range," or the maximum rpm at which the motor should operate, in the "Specifi...
how to winterize a yamaha outboard motor?
1. Flush the engine with clean, fresh water. Attach a garden hose to the flushing plug of the engine and turn it on full. Start the engine and let it idle for 15 minutes to ensure ...
how to change a yamaha outboard prop?
1. Place your boat on a trailer and move it to a convenient work location. Chock the wheels or keep the trailer hitched to the tow vehicle. Use a socket and wrench to remove the ne...
how to troubleshoot a yamaha 90 outboard?
1. Place the shift lever in neutral, or the starter cannot operate. 2. Check the battery connections. If they appear dirty or loose, remove the battery, clean connections with a da...
how to winterize the yamaha outboard efi?
1. Disconnect the speedometer pitot tube to ensure it drains completely. Fill the fuel tank and add 1 ounce of fuel stabilizer for each gallon of fuel in the tank. 2. Remove the cl...
how to replace a yamaha outboard thermostat?
1. Twist the engine cover lock and remove the engine top cover. Locate the small rounded thermostat covers at the top of each cylinder head. 2. Make a line that extends from the sm...
how to troubleshoot yamaha outboard gauges?
1. Remove the tachometer's mounting screws. Lift the tachometer from the dash. 2. Locate the green wire on the back of the tachometer and ensure it is connected to the screw termin...
how to replace an impeller on an outboard yamaha?
1. Remove the four screws on the bottom of the Yamaha outboard motor engine housing with a screwdriver. Slide the bottom housing away from the upper housing. Locate the water pump ...
how to change the oil on a yamaha t50 outboard motor?
1. Set the motor upright, not tilted forward, backward or to either side. 2. Place a 3 qt. drip pan beneath the motor. Remove the drain bolt, using a 1/2-inch socket, at the bottom...
how to winterize a four stroke yamaha outboard motor?
1. Put a container of fuel stabilizer in your fuel tank before you take the boat out for the season's last outing. Before you trailer your boat at the end of the day, fill your fue...
how to identify the model year of a yamaha outboard?
1. Look on your motor's registration. It may display the year and model, particularly if the motor was previously registered or titled in one of the six states that require a title...
how to change the yamaha 150 outboard impeller?
1. Place the Morse control in neutral. Loosen, but do not remove, the nut on the leading edge of the lower unit just under the cavitation plate. Use a socket for this and the rest ...
how to check the compression on a yamaha 70 outboard motor?
1. Remove all of the spark plugs from the engine with a spark plug wrench. Ground the wires to the engine block to prevent the motor from trying to start. 2. Screw the compression ...
how to replace the water pump on a yamaha outboard motor?
1. Remove the hose from the water pump outlet by undoing the clamp with a screwdriver and sliding the clamp up the hose. Slide the hose away from the outlet valve. 2. Undo the clip...
how to check a yamaha outboard motor control unit?
1. Turn the latch on the back of the motor's top cover and swing the top cover forward, removing it. Set the motor cover to one side. 2. Connect the motor to a water source by atta...
how to replace a yamaha outboard starter rope spring?
1. Remove the three bolts holding the rope starter to the powerhead, using a 1/2-inch socket. Lift the starter from the engine. 2. Turn the starter so the sheave is face up. Remove...
how to install flushing muffs on a yamaha outboard motor?
1. Realize flushing muffs come in a couple of different shapes and sizes. You want a set that allows enough space to get around the water intake of your engine while providing a ti...
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