2stroke carb adjustment


Old 02-28-08, 06:14 PM
Thread Starter
Join Date: Apr 2007
Posts: 6
Unhappy 2stroke carb adjustment

hi i have a earthquake 9000 power earth auger has the tecumseh 3hp 2stroke av520 motor i have worked on motors for 12 years and i am stumped i rebuilt the carb due to aqpinhole in the diaphram and i have to set the high and low speed adjustment screws starting with one turn all the way up o 2 turns out with every combo i could think of if anyone knows what the right settingsare i would really appreciate the input thanks ,,, Dave
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Old 02-28-08, 07:21 PM
Join Date: Jan 2007
Location: MA
Posts: 514
The settings on both screws are 1 full turn out after seating. One other note on diaphram carbs is that the installation of the diaphram can be different. If the carb is a "F" style carb it goes carb, diaphran, gasket, cover. A non "F" it goes carb. gasket, diaphram, cover. The "F" if present is stamped into the carb on the choke end.
Old 02-29-08, 11:11 AM
Thread Starter
Join Date: Apr 2007
Posts: 6
thankyou i appreciate the info

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