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    9.9hp 4 stroke leaking from carburetor

    My 1998 4-stroke mercury 9.9 hp outboard leaks fuel from the carburetor. When running and when primed with a bulb the leak occurs at the top of the carb. Could this be a stuck float, can I clean or do I need to disassemble?
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    Mercury verses Yamaha gear lube

    Is there any difference between Yamaha and Mercury gear case lube. I went to the Yamaha dealer to purchase gear oil for winterizing my OX66 225 engine. The dealer was out of Yamaha gear lube which has a greenish tint and instead sold me Mercury Premium gear lube which is clear. The dealer...
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    225 Yamaha power loss

    Recently, my 1997 EFI 225 Yamaha Outboard has lost top end power. The motor was purchased used and installed this year. At install it would run 5500 RPM, with a top speed of 52 mph. After a few months of use the top rpm is 5000 and the top speed is 47 mph. I replaced the fuel/water separator...
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    Yamaha OX66 does not charge battery

    A dealer recently installed a used 97 225 OX66 Yamaha engine on my boat. The motor runs great, however my electronics and gauges are not okay. Main problem is the motor is not charging the battery. The tachometer reads fine. Approx 40 volts AC out of the stator (only checked one line). One...
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