Yanmar Marine Diesel: How we check & adjust our Yanmar valve clearances (DIY with no BS)
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Need to check the valve clearances on your Yanmar 4JH series motor? Tynan explains how he checks and adjusts the valve clearances on our 4JH45 Yanmar marine diesel engines as well as how to find top dead center.
📖 Refer to page 5-90 and 5-91 of the Yanmar Service Manual: Marine Engines 4JH45, 4JH57, 4JH80, 4JH110 for reference material
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This video is useful to any live aboard cruiser or yacht owner who want to learn to do engine maintenance and have a catamaran or yacht with a Yanmar 4JH45 or 4JH57 engine, a 4JH series engine like the 4JH80 and 4JH110, or another marine diesel, including Leopard Catamarans, Seawind Catamarans, Lagoon Catamarans and Fountaine Pajot.
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After backpacking Asia, road tripping Europe and doing a bit of van life, we’re now exploring the world aboard our Leopard 45 catamaran.
0:00 Intro
0:40 Getting to the Valves
4.10 Checking & Adjusting the Valve Clearances
5.04 Finding Top Dead Center
9:40 Checking & Adjusting the Valve Clearances
#sailing #catamaran #diy #engine #yanmar
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Join the crew of Travel Sketch as they document their 2026 Trinidad mission and structural hull reconstruction aboard their Leopard 45, Liger.
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