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    Yamaha 115 oil tank alarm

    You are correct. Normally only the main oil tank being low (bottom switch closed/red wire grounded) and a thermoswitch being closed (pink wire grounded) will set the alarm. However, in some Yamaha 115 two strokes a faulty power supply to the CDI unit can set the alarm. Check all electrical...
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    24v Battery Charging Options

    115 two stroke or F115 four stroke?
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    24v Battery Charging Options

    What is the main motor? What does its alternator output? One advantage of lithium is how quickly it can be recharged.
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    Yamaha 9.9 troubles

    Yams are not the best pissers known to man. What are using to determine a good **** from a not so good ****? If the motor is not having an excessive temperature event I think your cooling system is just fine. Aging Primestart systems are known to make a motor be hard to start when cold.
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    2003 Mercury 200hp Saltwater edition 2 cycle, can the oiler be deleted?

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    2003 Mercury 200hp Saltwater edition 2 cycle, can the oiler be deleted?

    Which depends upon the amount of oil that has been injected into the gasoline supply by the variable output oil pump.
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    2003 Mercury 200hp Saltwater edition 2 cycle, can the oiler be deleted?

    Like underwear for old folks, it depends. If the motor has been idling prior to shut down then the ratio of oil would have been 100/1. Then at next start the gas/oil ratio would be 100/1. Now if the motor was running at say wide open throttle at a gas/oil ratio of 50/1 and then shut down, then...
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    Yamaha 9.9 troubles

    What are you doing to manually choke the motor? That model does not have a mechanically activated choke plate. It uses a Yamaha PrimeStart system. Automatic fuel enrichment. If the motor is not over heating then the water pump flow is more than sufficient, no matter what amount comes out the...
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    Suzuki df200ap 2021 outboard thermostat

    "OEM thermostat was corroded and rotted out after 60 hours of use" We love the prices of cheap stuff no matter where it comes from. Then biitch about the quality rather than buying higher quality foreign made parts.
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    Need help with ID

    The 1986 thru 2002 DF9.9 models use a round handle dipstick. Later model use a T handle.
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    Need help with ID

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    Need help with ID

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    Electrical not reaching panel

    On the starter itself? On the starter motor solenoid? On the starter motor relay? Start at the starter motor itself. Jumper battery power and ground directly to the starter motor. Using suitable sized battery cables. Does the starter motor now crank the main motor? If not, it is the starter...
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    Need help with ID

    Look at the carburetor(s) and the CDI box if you know what that is. What numbers/letters do you see.
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    Lithium ion batteries

    What are the consequences of not having balanced cells? Is it obvious to the user?
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    1990 vs 1996 9.9hp 4 stroke cylinder head/ gasket interchange?

    Yamaha made motors or power plants for Mercury/Mariner for a number of years. See below. What do you think?
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    1990 vs 1996 9.9hp 4 stroke cylinder head/ gasket interchange?

    What is the serial number of the Mariner motor? Look for any casting numbers/lettes that may be on the cylinder head. If you find any, what are they?
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    1990 vs 1996 9.9hp 4 stroke cylinder head/ gasket interchange?

    The original head gasket was part number 6G8-11181-A0-00. Replaced by part number 6G8-11181-A1-00. In stock and available from any Yamaha USA dealer.
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    1990 vs 1996 9.9hp 4 stroke cylinder head/ gasket interchange?

    Even though the back of the valves are damaged is the damage such that the valves are no longer usable?
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    Yamaha 115 anodes

    Yes, Yamaha expects the cylinder heads to be removed to gain access to the anodes. Yamaha manuals are written on the premise that a maintainer has a basic level of mechanical ability. If someone needs detailed step by step instructions as to how to remove and replace the cylinder heads and to...
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