Yamaclean & Yamabond Products

Yamaclean and Yamabond Products Resouces and Information

PartsVu.com offers a broad selection of Yamaclean and Yamabond products you can use to clean and maintain your Yamaha outboard motor. Whether you need to clean grease and grime off your outboard or fill gaps to stop leakage, PartsVu’s products are specially formulated to address your needs. 

We stock a complete range of Yamaha outboard parts to service your Yamaha outboard engine. Looking for other Yamalube products? Browse our selection of Yamalube marine motor oil, Yamalube marine grease, Yamalube Corrosion Inhibitors, and more!

We also regularly release new, helpful resources like:

• Yamaha Outboard Specs & Capacities Chart
• Yamaha Outboard Maintenance Parts Charts

Yamaclean and Yamabond Products FAQs

How do I protect my Yamaha outboard motor?

Grime, oil residue, salt buildup, rust, and corrosion. These are all good reasons to clean and protect your Yamaha outboard on a regular basis. Performing routine maintenance will keep your Yamaha running reliably and at an optimal level for plenty of fun on the water with family and friends. A little TLC can recover lost engine power, maximize efficiency, protect from the harmful effects of corrosion and ensure a long and healthy running life for your Yamaha outboard.

The marine environment is one of the harshest on the planet, and that’s why protecting your Yamaha outboard is extremely important. For premium protection against rust and corrosion, we highly recommend Yamashield Rust & Corrosion Protectant. Yamashield replaces the T-9 formula that was designed by Boeing Aviation and is a combination of solvents, lubricants, and waxes. This means it has the ability to clean, lubricate, and protect your Yamaha outboard.

Yamashield attacks existing corrosion and adheres to metal exceptionally well for long-lasting lubrication. This all-in-one product can be used on all engine components, including wiring, belts, and electronics. It can also be applied to paint, plastic, rubber, fiberglass, or vinyl.

Yamalube Marine Grease is specifically designed for the marine environment, is highly resistant to water and is critically important to protect your Yamaha outboard. It provides superior quality lubrication while adhering to all frictional surfaces, despite engine vibrations, to keep your engine’s moving parts working smoothly. We recommend using Yamalube Marine Grease on prop shafts as well.

What is a Yamaha outboard leakdown test used for? 

An outboard leakdown test is a simple diagnostic checkup for your Yamaha outboard – and it can even be incorporated into your regular maintenance intervals for peace of mind. 

During the test, you’ll be able to determine if there’s any loss in air pressure around your engine’s internal seals and passages. Even a pinhole leak can drastically alter your Yamaha outboard’s performance, so performing a leak down test is important to determine whether the piston seals and other components are in good shape. 

Fortunately, a leak-down test only requires a few common tools and some basic knowledge about your Yamaha outboard. Even boaters with minimal experience can diagnose developing issues that affect the overall performance and lifespan of your boat’s engine(s). Best of all, performing this test will save you money and headaches down the road.

What is a Leak Down Test for Yamaha Outboards?

A Yamaha outboard leakdown test indicates the condition of each of the engine’s cylinders and the overall condition of the motor. Similar to a compression test, it involves spraying compressed air into each cylinder and using a pressure gauge to measure a percentage of pressure that’s lost after a short period.

Also, part of doing a leakdown test on a motor is to listen for any signs of leakage. By listening closely to each cylinder and the areas around them, you’ll better understand where leaks may be present.

The goal of a pressure test is to confirm whether the motor has any air leaks. The presence or absence of air in engines often leads to leaking of fuel-air mixtures and leakage of fuel during operation. 

Additionally, these leaks may become infiltration points for water and moisture from the aquatic environment, resulting in internal corrosion, sub-optimal performance (i.e., at idle, low RPMs, and high RPMs), and other issues.

Now that you have a basic understanding of what a leakdown test involves, it’s time to get started with the leakdown test to troubleshoot your Yamaha outboard motor!

Note: The following guide is based on procedures for a Yamaha F225; however, the steps for other Yamaha outboard engine models are very similar. This said, be sure to consult your Yamaha outboard service manual for exact cylinder configurations, required tools for disassembly, and other important information. If you run into problems, immediately consult your local certified Yamaha outboard mechanic.

• Step #1: Begin by carefully removing the top cowling, Then, remove the ignition coil cover at the rear of the motor.
• Step #2: Remove the spark plugs. Be sure to lay the spark plugs in numbered order to reinsert or replace them after the test.
• Step #3: Remove the flywheel cover from the top of the motor.
• Step #4: Mark the flywheel with a marker at 0°, 120°, and 240°. These positions will indicate where you’ll rotate each pair of cylinders to the top dead-center positions (see Step #11 and #12 below).
• Step #5: Rotate the crankshaft with your ratchet and socket to the top dead center for cylinder #1.
• Step #6: Adjust the regulator on the leak down tester to 0% to calibrate it for an accurate reading. 
• Step #7: Connect the leakdown tester by screwing into the spark plug port at cylinder #1. Next, connect the tester to the compressor and take a measurement. Be sure to firmly hold the crankshaft to prevent it from rotating.
• Step #8: Rotate the crankshaft 360° (one full rotation) to put cylinder #4 at top dead center.
• Step #9: Connect the leakdown tester to cylinder #4. Then, take a measurement while holding the crankshaft to prevent it from rotating.
• Step #10: Set cylinder #3 to top dead center at the 120° mark. Next, repeat step #7 through Step #10 for cylinders #3 and #6.
• Step #11: Set cylinder #2 to top dead center at the 240° mark. Then, repeat step #7 through Step #10 for cylinders #2 and #5.

Step #12: Replacement is the same as disassembly. Be sure to replace spark plugs in numbered order and apply anti-seizing compound on the threads for easy removal/replacement in the future. Also, firmly reattach the ignition wires for a solid connection.

Are Yamaha Outboard Motor Covers Worth the Investment?

We get it. Yamaha outboard motor covers are yet another thing you are told you need to buy for your engine. But is this investment necessary? This area is subjective in some ways, but in other ways, it is not.

One issue is cosmetic. Do you want your Yamaha outboard’s cowling to look new and shiny for as long as possible? Yet another issue is not cosmetic but is part of your overall effort to maintain your engine. Your Yamaha’s cowling is like the skin on your body. Just as our skin does a great job of protecting our body’s systems, your cowling protects its own precious cargo—your engine.

Just as our skin takes a lot of abuse—sun damage, cuts, bruises, environmental contamination—so does your cowling. In the southern states, UV rays are especially intense. For example, boats and engines alike spend a lot of time baking nearly year-round in the Florida sun. In the northern states, boats may not be exposed for as many months of the year and the UV rays might not be quite as strong, but a lot of damage can still be done.

Another source of harm is trailering. If you trailer your boat, your cowling is likely to be struck by stones, rocks, and other road debris as you tool down the highway. Scratches and dings are the low end of the damage—cracks and punctures in your Yamaha cowling are more serious.

Finally, environmental elements like saltwater spray or acid rain could collide with your cowling at some point. Yamaha outboard covers do not eliminate all of these problems, but they sure do help a great deal.

Yamaha outboard motor covers are made of durable SurLast solution-dyed polyester fabric. SurLast fabric offers strong protection against the harsh marine environment. The fabric is nonabrasive; water-resistant; and resistant to UV rays, mold, and mildew. Yamaha outboard engine covers are also designed to perfectly fit your specific Yamaha outboard engine model.

Your Yamaha cowling will become damaged by the sun, road debris, and other environmental factors if it is left uncovered when your boat is docked, on a lift, in storage, or being transported. Given this, we think it is best to calculate the risk-reward ratio of investing in a Yamaha outboard motor cover and go from there.