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    1987 70ETLH not charging

    4 AC volts from the lighting coil is way too low. Assumption being the lighting coil was unloaded when taking the measurement. Have you tested the ohms of the lighting coil? Have you verified that the lighting coil is not shorted to ground? Bad input to the R/R equals bad output from the R/R.
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    1987 70ETLH not charging

    What you call the voltage regulator fuse is the same fuse that provides battery power to the key switch. If no battery power to the key switch, then the starter won't operate. Your model motor does not need battery power to run. Only to crank the motor. That is why when you disconnect the fuse...
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    1993 30hp mariner ignition timing

    Made by Yamaha. Yamaha USA offered two basic 30 HP models in 1993. A three cylinder model with three carburetors and a two cylinder model with one carburetor. Get the Yamaha 1993 manual that is related to your specific motor. www.yamahapubs.com
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    How to operate side mount throttle for 1993 Yamaha jet?

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    How to operate side mount throttle for 1993 Yamaha jet?

    My understanding is that the shift function of the 703 box controls the jet pump gate. Gate is in place when the shifter is in reverse. Gate is out of the way when the shifter is in forward. Gate is positioned midway when the shifter is in neutral.
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    How to operate side mount throttle for 1993 Yamaha jet?

    The red button unlocks the throttle/shift handle so that it can be shifted into forward or reverse. That is an old box that has the toggle switch which activates the choke on the motor. Later versions use a push-the-key to activate the choke. The metal arm is the fast idle lever. Lifting the...
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    How to operate side mount throttle for 1993 Yamaha jet?

    Yamaha owner's manuals are available from https://www.yamahapubs.com/
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    How to operate side mount throttle for 1993 Yamaha jet?

    You don't need to schmooze us to get information. lol. The Yamaha 703 external side mount control box can be set as either a push to open or a push to close configuration. A toggle switch might be used to activate a choke mechanism for those Yams that have a choke. The key switch being pressed...
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    2008 yamaha motor key switch won’t alarm

    Single engine Yams do not beep when the key is turned to the on position. As 99yam says, pull the kill switch and turn the key to the start position. The horn will sound.
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    Carb Roller Part # for Yamaha 25ESD

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    F4 water issue

    The four stroke Yams are weak pissers. Nature of the beast.
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    Yamaha 55AE Serial Number

    1976
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    Water pressure gauge install

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    Yamaha 2008 90TLR oil injection

    105 is just fine. Don't do it. The Yam system is very very very reliable. Did I mention that it is reliable. It works on gravity. Gravity has never failed me yet. It is more than a suggestion. It is the law.
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    Idle Adjustment Screw

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    Idle Adjustment Screw

    One idle mixture screw per carburetor. Two per carburetor pair. There could very well be a plug that has to be removed to gain access to the mixture screws.
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    2002 carb'd 4 stroke - constant alarm. Please advise.

    Any idea as to the model identity or the horse power value?
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    2004 Yamaha F 150 Non-clearance or Clearance Engine

    It is an interference engine.
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    HPDi Idle adjustment

    Negative on the computer controlling the idle speed of an HPDI model. The throttle valves are all mechanical. There is no idle air control valve.
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    FUEL PRIMER BULB COLLAPSING!!

    How old is the primer bulb? It might be too old to properly hold its shape. If new, it could be defective.
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