Home › Forum › Ask A Member › Needle valves move during use on 1957 Johnson 10 hp › Reply To: Needle valves move during use on 1957 Johnson 10 hp
DrummermanBob, I had the same problem when I tuned up my 57 Johnson 10hp, after a while the needle valves started working loose, problem was, I used the old packing washers that were in there, mistake, removed the old packing washers. The older packing were getting stiff & hard, so when I tried tightening needle nut to keep needle in correct position, the older packing would still work out of adjustment, because of stiff packing. Went and ordered the correct packing #43-123, 4 per needle, 8 total, installed and went for another ride, adjusted needles, slowly tighten packing nuts so needles would stay in place, which didn’t take much. If it ever needs adjustment again, loosen up packing nut just enough to readjust carb, tighten packing nut just enough to hold needle in place without it vibrating out of adjustment. The moral of this story is use the correct packing and amount on each needle. Four washers on each needle I thought was too much, hard to disagree with OMC, but it works. Gene.