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    Yamaha 2 stroke , shift cable adjustment ?

    No round decal with some numbers on it on the side of the block?
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    Low Compression, Low $ Advice

    What does that have to do with the OPs report of low compression?
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    Low Compression, Low $ Advice

    If it ain't broke I would not go fixing it.
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    Yamaha 2 stroke , shift cable adjustment ?

    The OX 66 models are oil injected with conventional fuel injection. The HPDI models are oil injected with direct injection. As noted, two different motor types. There is no throttle shifter sensor in either model. The throttle handle moves X number of degrees, after it has shifted into forward...
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    95 Mariner 4 stroke 9.9

    I believe that your carburetor also has an accelerator pump. Have you looked into the carburetor while rapidly advancing the throttle to see if a bit of gasoline is being sprayed into the throat of the carburetor?
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    95 Mariner 4 stroke 9.9

    There is no choke. Difficult to say how something that does not exist works.
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    Yamaha 40 hp 2 stroke tach hookup

    The rectifier/regulator has two green wires. One of which has two bullet connectors. One of those two are for a connection to a tachometer. For the RPM signal.
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    95 Mariner 4 stroke 9.9

    The cold start fuel enrichment component is what Yamaha calls a Primestart device. Mercury calls it a Primer Assembly. Allows extra gasoline to flow when the motor is cold. Progressively provides less extra gasoline as the motor warms up. When the carburetor was removed was it completely...
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    95 Mariner 4 stroke 9.9

    Any idea as to the complete model of the motor?
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    2004 mercury 90 four stroke EFI not charging

    Could be as simple as blown fuse, a bad connection point or it could that either the rectifier/regulator has failed or the lighting coil has failed. Do you have a multimeter and know how to use it?
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    Dual tacometer

    Yes. It will work. But you won't be able to have trim information on the 6Y8 tachometer if you have trim information displayed on a standalone trim gauge or if your present tachometer is a Yamaha 6Y5 type that is displaying trim information.
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    What’s up with this fuel filter?

    Nope. Only used on certain F115's and LF115's.
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    What’s up with this fuel filter?

    Why would it?
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    Gear oil drain screw

    Why not torque the screw to the specified value?
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    What’s up with this fuel filter?

    image hosting service
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    What’s up with this fuel filter?

    The filter was added to the F115 model along the way. 2005 model year I believe. Yamaha is terrible about updating service manuals to depict new parts. It does not show up until service manual LIT-18616-02-98 which is for later F115 models. I would suspect there is no yearly needed to change...
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    What’s up with this fuel filter?

    It just looks different is all.
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    No power to F9.9 Yamaha

    There is no servo. There is only a relay. Relay is controlled by the key switch. Relay is normally open. No current flows to the starter motor from the battery. Key is turned to the start position and the relay closes. In which case current then flows from the battery to the starter motor. To...
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    No power to F9.9 Yamaha

    Do you have a set of battery jumper cables? If so, bypass the control system and the power supply system and connect the cables directly to the starter motor. Positive to positive and negative to negative of course. If it cranks just fine then that is telling you that the starter motor is good...
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    No power to F9.9 Yamaha

    Important to test voltages while the motor is being cranked.
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