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  1. M

    Honda GCV 520 Engine Firing on Single Cylinder - Confusing diagnostics

    Incidentally, thanks to second post too. Yes, checked earlier - valves on RH cylinder open and close OK. Thanks
  2. M

    Honda GCV 520 Engine Firing on Single Cylinder - Confusing diagnostics

    Hi. Thanks for your reply. With the two kill leads connected (at the coil modules), there is no change in the engine performance. You need to attach the kill wire on the running cylinder to stop the machine. The rev counter now shows interestingly '0000' rpm! Now, since one plug is wet and...
  3. M

    Honda GCV 520 Engine Firing on Single Cylinder - Confusing diagnostics

    Hi all I have a Honda GCV 520 two cylinder V engine powering my Countax mower but is only firing on a single cylinder. I have carried out initial diagnostics but the results leave me totally confused. I have summarised the actions taken and results below. The engine runs, as expected lumpy...
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