weenieroaster
ArboristSite Operative
I haven't seen this addressed anywhere:
When the metering lever is pushed down by the diaphragm, it is supposed to raise the inlet needle accordingly. Sometimes, there is a bit of play in the needle slot, so that the lever moves up before the hook end contacts the upper edge of the needle slot and begins raising the needle. On some rebuild kits, the lever is thinner material than on the stock one, which increases the amount of upward travel before the needle starts to actually raise up. I found that you can't adjust the hook end to always be in contact with the needle to raise it without the delay, the spring pushes the end down, and if you try to bend up the hook too much, the needle binds.
The question is, if there is this play or delay in raising, should it be taken into consideration when adjusting the lever in relation to the metering floor or carb body, whatever the specs call for. I'm thinking that raising up the lever higher than recommended, the amount of discrepancy between the arm thickness and needle slot, will then give the right amount of needle movement. Perhaps it's not critical? Any thoughts?
When the metering lever is pushed down by the diaphragm, it is supposed to raise the inlet needle accordingly. Sometimes, there is a bit of play in the needle slot, so that the lever moves up before the hook end contacts the upper edge of the needle slot and begins raising the needle. On some rebuild kits, the lever is thinner material than on the stock one, which increases the amount of upward travel before the needle starts to actually raise up. I found that you can't adjust the hook end to always be in contact with the needle to raise it without the delay, the spring pushes the end down, and if you try to bend up the hook too much, the needle binds.
The question is, if there is this play or delay in raising, should it be taken into consideration when adjusting the lever in relation to the metering floor or carb body, whatever the specs call for. I'm thinking that raising up the lever higher than recommended, the amount of discrepancy between the arm thickness and needle slot, will then give the right amount of needle movement. Perhaps it's not critical? Any thoughts?