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Where do the two wires go from the rectifier on a 13hp briggs and straton single cylinder engine

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  • Eugene Rounds Nov 26, 2014

    Hi R Shand, I want to help you with your question, but I need more information from you. Can you please add details in the comment box?
    Several different possible configs.

    Really the equipment numbers including the engine and type numbers. Also need wire and connecter colors.

  • R Shand
    R Shand Nov 26, 2014

    Hi Eugene, the engine number is 21B807 type4120 H1. the two wires are red and black, the red has a diode fitted and they terminate in a push on plug



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From the engine model given you have a dual circuit alternator.

The red wire with the diode is connect to either to the amp meter if your mower setup has one or directly to battery side (large conductor) of the starter solenoid. It supplies a 3 amp unregulated DC charging current. The diode converts the Ac on that line in a pulsating DC voltage/current and it also normally prevents the discharge of your battery when the engine is not running.

The black wire is the AC output for your lights and is normally connect directly to the lighting circuit.

Posted on Nov 26, 2014

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Presumably you have a red wire and a yellow wire. The red wire goes to the battery positive and the yellow wire should go to the starter.

Posted on Nov 26, 2014


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SOURCE: i have a 13hp briggs and stratton model # 28m707

Go to . Enter your model number, get the owners manual download and inside there will be a page with the wiring schematic for it .Good luck!

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SOURCE: Briggs & Straton 158cc engine

This is usually caused by either the introduction of air between the carb and the engine (loose carb mounting bolts or nuts) or.... debis in the fuel system. The debris in the fuel system would be on a float bowl type carb. If you have the carb that is mounted on top of the gas tank... tighten the screws that hold the carb to the tank.

If you pass me a complete / exact engine number off of the air shroud by the spark plug lead, I will pass you a parts list and identify the parts you need to look at.

We can get this corrected.. just need that engine model / type / series number.

Thanks for choosing FixYa,

Posted on Sep 12, 2011

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SOURCE: backfiring thru carburator briggs and straton

manual said use champion qc12yc spark plugs gap 40 hard to found i use b&s plugs fail out. do i need to use qc12yc plugs

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