Question about V-Twin Horizontal OHV Engine with Electric Start - 610cc, GX Series

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I have a Honda GX610 18 hp small engine. There is no spark to either spark plug. If the engine stop diode is bad would this occur? Any help on this would be much appreciated. Thanks

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  • braran Apr 23, 2009

    Problem Solved

  • braran Apr 23, 2009

    Problem Solved

  • Lieu Apr 25, 2009

    There is no spark to either plug or plug wire. I cleaned the coils. Does this have a relay that both coil wires go to that would cause this?

  • ray012965 Jan 17, 2017

    yes disconnect black wire with blue stripe from diode assembly usually fastened by two nuts on side of head reminder one behind shroud is another diode assembly best way isolate grounding wires from coils and if starts then you back track by re connecting each device



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I have the same problem...did you find a solution? If so please email me at


Posted on Jun 09, 2009

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Yes first isolate the grounding wires from the coils if she starts you should replace the diode assembly.if it does not start or have spark on either coil,they will need to be replaced.feel free to ask me further ??? i am a honda tech for over 30 years.

Posted on Dec 23, 2014

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Hello I'm from Honduras, I need to locate the motor gears HONDA DYNA
GX 610 / V TWIN 18 hp
series GCAC-1005320
13.4 kw
614 cm # 3
need help to build it today and if I struggled and I get

Posted on Apr 23, 2013

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I need to find out the rpm when idle with this engine.. any one who can be of any help email

Posted on Jan 12, 2010

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Necesito adquirir el motor de arranque y el filtro de aire para el motor HONDA GX 610 / V TWIN 18 hp serie GCAC 1003623
estoy en colombia y no conosco el distribuidor de repuestos

Posted on Sep 04, 2009

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