Cylinder Heads and Blocks for Yamaha Outboards

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Yamaha Outboard Replacement OEM Cylinder Heads and Blocks Resources and Information PartsVu.com is happy to offer a broad selection of replacement OEM cylinder heads and blocks for Yamaha outboard motors. If you have questions about performing maintenance on your Yamaha outboard, chances are you’ll find the answers in our blog . We also regularly release new helpful resources like: Yamaha Outboard 100-hour Service Guides Yamaha Outboard Specs & Capacities Chart Yamaha Outboard Engine Schematics Looking for more components and products to service your Yamaha outboard engine? Feel free to shop our complete selection of Yamaha outboard parts. Yamaha Cylinder Heads and Blocks FAQs How do I perform spark plug and compression maintenance on my Yamaha outboard motor? Performing Yamaha spark plugs and compression maintenance on your outboard is one of the keys to its overall longevity and reliability. Begin this step of your Yamaha 100-hour service by removing the plastic shrouding over your spark plugs or ignition coils. Yamaha engines come from the factory with NGK brand spark plugs, and PartsVu carries a wide assortment of these OEM plugs. In most applications, the spark plugs come pre-gapped, but it is advisable to re-check the gap to make sure that no plugs were damaged during manufacturing or shipment. Again, the information in your owner’s manual is helpful – or you can consult our Yamaha Engine Specifications and Capacities Chart. As you remove the old spark plugs, keep track of which plugs come from which cylinders. Note if the plug appears to be wet from water, oil, or gasoline. Note if the plug exhibits evidence of heavy carbon deposits, other fouling, or rust – all indicative of other problems. If you were to take your engine to a dealer for 100-hour service, this is the point at which they would perform a compression test by connecting a compression gauge to the cylinders individually and using the starter motor to turn the engine over and check its ability