1980 Johnson 4HP Service Manual, Page 27Get this manual
check position 01 110at, turn carburetor body upside down, 50 that weight 01 the 110at close5 110at needleFoat 5houd parae and 1ush with 01 casting and at height speci1ied gauge number 324891 dU5ing new gasket, install the 110at chamber to the carburetor bodyInstall throttle linkage and 101l0wer The leaf is so designed that it maintains stant contact with the leaf plate until predetermined pressure is exerted against itLeaf travel away from the plate is limited to 14" (6.35 the leaf back-up plateWhen pressure is removed, the inherent spring action of the leaf segments returns and holds them against the plateAttach the leaf segments and leaf stops to the leaf plate, aligning leaves with marks plateSee Figure 3-12
Examine each leaf carefullyEach leaf must lie flat against the plate with edges turned up away from the plate9.9
00 NOT ift
bend segments handThis damage them so that the eaves woud have to repaced
21Gage number 324891 2Float 301 1oat must between these steps Figure 3-17Foat Leve Adjustment NEEOLE VALVES Install new packing washers in carburetor bodyInstall needle valve packing nut, but do not tighten against the packingInstall needle valve, turning carefully until it is seated lightly00 NOT turn down tight as the taper the needle damagedBack up the low speed needle turn