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YANMAR UTV SxS Forum

This is for all of you YANMAR UTV, SxS (Side by Side) owners. Discussions about YANMAR specific topics including the Brahma Diesel, The Bull, and The Longhorn models.




  • Latest Posts

    • Overheating is Massimo trademark. Jump the temp switch so you fan runs 100%
    • Agree..it was out of control but seems working now😁
    • @Alex   Fantastic! You fixed the add conundrum. It was really awful. Thank you so much. The forum is useable now. 
    • Many people have issues with the kawasaki FJ400 engine  fouling out spark plugs, after  working on a  few FJ engines and 600 series Mule's with this issue,  i can say the fix for this issue is using a slightly hotter spark plug... the factory recommends a BPR6ES NGK plug.... the Number in NGK plugs represents its heat range and somewhat odd, the lower the number the hotter the plug, at least as far as NGK is concerned. If you have  a Mule fouling spark plugs try installing a NGK BPR4ES spark plug. FROM NGK A hotter heat range spark plug has an insulator design with a longer heat flow path to the metal shell of the plug. As a result, more heat stays in the ceramic firing end and less is dissipated to the engine. A colder heat range spark plug has an insulator design with a shorter heat flow path to the metal shell of the plug. As a result, less heat stays in the ceramic firing end and more is dissipated to the engine. For a spark plug to function properly, it must have a tip temperature high enough to burn off carbon deposits (self-cleaning) and avoid fouling, while remaining low enough to avoid overheating the ceramic firing end and pre-ignition.
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