Johnson J10RLSRD Service Manual page 156

IMPORTANT: The inlet needle and float valve
seat must be replaced as a set.
Needle Valves
Inspect the tapered end of the needle valve for
nicks, scratches, grooves, or signs of distortion.
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Carburetor Body
Check all drillings and passages with a syringe
filled with isopropyl alcohol.
FUEL SYSTEM
CARBURETOR
Visually inspect all gasket surfaces for nicks or
irregularities.
Check for excessive throttle shaft play. Check for
throttle valve misalignment.
If necessary, remove the calibration pocket core
plug to inspect the pocket for damage or restric-
tions.
• Drive a small punch not more than 1/8 in.
(3 mm) through plug and pry out.
• Install a new core plug with the convex side up.
Seat the plug using a flat end punch and plastic
mallet. Apply Gasoila sealer to the rim of the
core plug after it is seated.
1 - -_ _
~
1. Core plug
9490
If necessary, remove the lead shot to inspect pas-
sage for restrictions or leaks. Gently pry up on
lead shot with a sharp edged tool.
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