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impvan · 16th June 2018, 13:32

I think the ethanol added to petrol is what causes the problems. Usually buried in the depths of the manual, is a line about not using ethanol-blended fuels.

The ethanol is hygroscopic, and the absorbed water wreaks havoc in the tiny drillings in a small engine carb.

Having replaced the carb on our old strimmer twice, I bit the bullet and bought a 4-stroke machine...

16th June 2018, 13:32	#17
impvan Avid contributor ZT-T Join Date: Aug 2012 Location: In the trees, near Caernarfon... and frequently Aberdeenshire, and sometimes Romania.. Posts: 143 Thanks: 5 Thanked 36 Times in 29 Posts	I think the ethanol added to petrol is what causes the problems. Usually buried in the depths of the manual, is a line about not using ethanol-blended fuels. The ethanol is hygroscopic, and the absorbed water wreaks havoc in the tiny drillings in a small engine carb. Having replaced the carb on our old strimmer twice, I bit the bullet and bought a 4-stroke machine...