Skip to main content
Collection, Preservation and Display of Old Lawn Mowers

Plug Gap

Enter a word or two to search the forum section and click the Search Forum button.

Hopefully this is my last question about my "refuse to start" Atco Standard 16.Reading the downloaded instruction manual(brilliant)i see that a plug gap of 1/32 inch is recommended.I have applied my very basic mathematics skills and come up with 0.031 decimal figure.Is this correct ? It seems extremely narrow.Thank you.

Forums

janbo Sat, 19/04/2014

Hello,

 

That is correct, it is not that narrow. metric it is 0.78mm . Lots of engines have a recommended gap of 0.025 (0.5mm ) If your ignition has lost some strength due loss of magnetism you better try 0.025. 

 

vanjim50 Sat, 19/04/2014

Thanks for your help.Everything is ready to start,clean carb,new fuel etc,even a moderate spark from my Champion D16 plug.but it just won't fire up.I will buy new plugs and try it at 0.031.If no success i'll try 0.025.Thanks for the advice.