4 stroke outboard motor maintenance

In 4 stroke motors there is an oil filter and self-contained oil cavity within the engine similar to the way it works in a car. The customer simply maintains an oil reservoir either located in the boat or on the engine.

Leave the fuel turned off and close the fuel tank vent.

4 stroke outboard motor maintenance. A well-maintained four-stroke engine can give its owner 4000 hours of service or more without major issues. When you consider that the average boater will put 50 hours a. Wind weather and the elements are the usual culprits when it comes to boat maintenance however the 4-stroke outboard engine is best tended to from the inside out.

Changing the engine oil lubricating the crank case draining the cooling system and emptying the carburettor before storage will prolong the life of the engine but the techniques. Mercury 4-Stroke Outboard External Spring Maintenance. Give your outboard an external inspection looking for scratches you may have missed when winterizing the unit last year particularly on the lower unit which is prone to damage from underwater strikes.

Clean prime and repaint any scrapes that might otherwise lead to corrosion. If you fish a lot following your outboard motors manufacturer guidelines for scheduled outboard maintenance can get expensive. I find it funny that most owners manuals use the terms 100-hour service and yearly service interchangeably assuming that thats how many hours most motors run in a year.

Yamaha Four Stroke Maintenance Schedule. Yamaha Outboard Service Tips. Yamaha recommends service intervals based on typical use that includes operating at varied speeds sufficient time for the engine warm up and cool down medium to light and average cruising speed near 3000 to 4000 rpm range.

If your normal operating conditions are different. HOW TO PERFORM -HOUR SERVICE ON A 4-STROKE YAMAHA OUTBOARD STEP ONE. Engine Oil Change 1 00-hour service begins with an engine oil and filter change.

On a Yamaha four-stroke engine oil weight and capacity can be found by reviewing the tag on the top plastic shroud on the engine under the cowling cover. Or you can look in your owners manual. OUTBOARD ENGINE MAINTENANCE COURSE CONTENT.

The outboard engine 2 stroke and 4 stroke Servicing. Routine cleaning and greasing. Propeller changing and care.

Lowering the leg water pump inspection. Leave the fuel turned off and close the fuel tank vent. Remove the top cowl and give your engine a real good wash down with a mild detergent solution.

Spray it on with a hand spray work it in with an old dish-washing brush give it a few minutes to soak and then hose down with fresh water. Using a 4-stroke combustion system the 4-stroke outboard motor is a cleaner alternative for the environment than its 2-stroke cousin. Instead of mixing oil with gasoline in an effort to lubricate the 2-stroke motors top end the 4-stroke outboard motor uses an oil pump in conjunction with an oil reserve within the engine itself to pump oil to the critical areas of the motor.

Yamaha 4-Stroke Powerhead Spring Maintenance. Remove the top cowling and give the powerhead a thorough inspection. Look for any nesting wildlife such as rodents birds or insects and remove them.

Check the engine oil. You shouldve changed the oil when you winterized the outboard but if you didnt now is the time to. A four-stroke outboard needs more regular maintenance and checkups than a two-stroke outboard.

There is a tendency for four-stroke engines to be reluctant starters even in warm weather. Therefore oil changes are not required to power the engine because the oil is continuously injected. The customer simply maintains an oil reservoir either located in the boat or on the engine.

In 4 stroke motors there is an oil filter and self-contained oil cavity within the engine similar to the way it works in a car. The most accurate and specific maintenance interval information for your particular outboard will be found in your owners manual. Weve also included basic charts above to help give you an overview of what needs doing and when indicated by yellow boxes.

To determine when service is due keep your eye on your hour meter. Annually Or Every 100 Hours 1 Anticorrosion Anodes. I Safety Items Emergency Stop Switch Lanyard.

I Mounting Hardware Clamp Screws. I T Fuel Oil System Components. You mostly want to fog a 4-stroke outboard to protect the combustion chamber which is not coated or bathed in oil.

Fogging will also help with combatting piston ring and other potential internal corrosion particularly in humid environments. A Yamaha outboard motor is a purchase of a lifetime and is the highest rated in reliability. Owner Manuals offer all the information to maintain your outboard motor.

Click on any Maintenance question to receive an answer. What does the warning buzzer and subsequent flashing light mean. Can I use the Tilt Support Lever for transporting my Suzuki outboard.

May I start the engine out of water. Is there a specific oil requirement to maintain my Suzuki four-stroke Outboard. A safe engine.

Maintenance How to Guides. Check your Outboard Engine Thermostat. Evinrude Johnson 4hp 2 stroke Seahorse User guide.

Outboard engine gearbox pressure test. Replace frayed starter rope 4hp 2 Stroke type. Replace the Yamaha F25 starter rope.

Replace Thermostat and Cylinder head Anode Yamaha. Mercury 25HP 4-stroke Operation and maintenance manual PDF ENG 199 MBpdf. Mercury 25HP 4-stroke Operation and maintenance manual PDF RUS 142 MBpdf.

Mercury 3040HP 2-stroke Operation and maintenance manual PDF RUS 117 MBpdf. Mercury 3040HP 4-stroke Operation and maintenance manual PDF RUS 117. All critical factors in outboard engines.

While 2 stroke outboard motors are typically not maintenance free servicing is fairly cheap and easy to fix when issues arise. 2 stroke outboards are smaller and lighter than their 4 stroke of an equivalent power. The gearcases of Mercury FourStroke outboards are designed to reduce drag and deliver stable high-speed performance.

The new Mercury V8 and V6 FourStrokes simplify engine maintenance with no-drip oil changes clearly worded routine-maintenance information on a decal under the cowl and a QR code for smartphones. Mercury 60 4-Stroke Manuals User Guides. User Manuals Guides and Specifications for your Mercury 60 4-Stroke Outboard Motor.

Database contains 2 Mercury 60 4-Stroke Manuals available for free online viewing or downloading in PDF. Manual Operation and maintenance. View online Manual for Mercury 4 4-Stroke Outboard Motor or simply click Download button to examine the Mercury 4 4-Stroke guidelines offline on your desktop or laptop computer.