You Can Do This without a doubt! First of all, Keeping the gas treated (always treat your gas, so you don't have to worry about what's left between seasons) is half the battle. Your four stroke motor is a lot like your car (only be sure to always use marine specified parts, especially for electrical, ignition or fuel related parts). I'm including a couple of valuable links. One is to Merc's Customer support. Always a great place to start. The other is to a parts forum. get to know and join a mercury outboard forum or two where you can ask specific questions and of course come back here for help! https://www.mercurymarine.com/en/us/service-and-support Forums Mercury Marine Parts Forums
Fuel varnish can be difficult to remove and is troublesome if it begins to flake off.
I can't help with the servicing which is a largely intuitive process based on general mechanical experience and knowledge and is improved by model knowledge and manufacturer's information.
There are plenty of fuel system cleaners and additives designed to remove varnish and the best way to learn how to service your outboard will be to observe a professional - most professional types would be pleased to teach you the basics about your motor for a consideration.
SOURCE: perform service light is constsntly on
i had same problem.u have to press step untill miles to service then press reset for 3 seconds . hope it helps
SOURCE: Perform Service Light comes on
This is a setting that can be reset to 2000 miles - when it counts down to 0 you get the "Perform Service" alert. I believe if you use the Step function you will see "XX miles to Service" Use the reset button to set this back to 2000.
SOURCE: 4 stroke Yamaha 50HP -Runs rough at all throttle levels
If it has the old points system you will need to set the points also adjust the carburatior screw the screws all the way in and back out 2 1/2 turns then get it to run turn the air mixture screws till it runs smooth. you want it slightly lean then enrichen it slightly, afterword shut the engine down and look at the plugs if they are gray black they are ok. good luck.
SOURCE: I want to service my vehicle
If you want to do a full service:
Change oil and filter
Change fuel filter
New spark plugs
Check all fluids:
Transmission fluid
Brake fluid
Power steering fluid
Coolant (anti-freeze)
Rotate tires, and do a grease job, you will need a grease gun for that.
If you want just the minor
Change oil and filter
fuel filter, and spark plugs.
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