1970 Johnson 115 HP Outboard Motor Service manual, Page 25Get this manual
NEEDLE VALVES
aInspect the tapered nd of the needle valves for gr ooves, niCks, wear; replace if necessarySee Figure 3-1 4bDO NOT attempt to alter the shape of the low-speed needle valvesCARBURETOR BODY
Figure 3-12
aClean out all the jets and passages, and the venturi, making sure no gum or varnish deposits remainDry after cleaning with compressed airKeep clean for final reassemblyb, Check all gasket surfaces for nickscratches, distortionSlight irregularities can be corrected with the use of urface plate and emery
clothC, Check throttle and choke hafts for excessive playCheck operation of choke and throttle valves to be sure they correctly hut off air flow, yet move fre ely without bindingReplace carburetor body if valves shafts are excessive ly worn or damagedNOTE