How do you adjust a lawnmower carburetor?

Answer 1

Initial set: Close needle valve (rotate clockwise) until the tip just snugs (do not over-do), then open (rotate counter clockwise) 1-1/4 to 1-1/2 turns. Start engine and allow to warm up abouy 4 minuyes. Fine tune: With engine warmed up and running, close needle s-l-o-w-l-y valve until engine starts to stall for lack of fuel; then open needle valve s-l-o-w-l-y until engine starts to stall from over-flooding. Set needle valve half-way between the both extremes. If engine sputters or stalls when load is applied (blade engaged or mowing), open needle valve 1/8 turn for a slightly richer mixrure.