Johnson J10RLSRD Service Manual page 168

25/30
MODELS
IMPORTANT: All intake manifold components
must be perfectly clean before assembly. Do not
use a strong carburetor cleaner or hot soaking
tank.
Place leaf valves on leaf plate. If new valves do
not seat on the leaf plate, turn the leaf valves over.
IMPORTANT: Used leaf valves must not be
turned over for reuse. Leaf valve may break when
returned to service, causing serious powerhead
damage.
If any leaf valves are standing open, apply light
pressure using a pencil eraser. If leaf valve closes
with light pressure, valve is acceptable. If not,
inspect leaf plate for high spots or burrs.
IMPORTANT: Do not lap leaf plate. If plate is too
smooth, the leaf valves may stick closed after off-
season storage.
FUEL SYSTEM
INTAKE MANIFOLD
Viewed from the back (leaf stop) side, the align-
ment notches must face as shown. The port notch
will face one o'clock and the starboard notch will
face 11 o'clock. Failure to follow this procedure
will cause premature leaf valve failure.
Center the leaf valves on the plate using the index
marks.
1
2
1. Alignmentnotches
D R 1 4 6 s 1
2. Index marks •
Center the leaf stops, and tighten the leaf valve
screws to a torque of 25 to 35 in. Ibs. (3 to 4 N·m).
12686
E
o
U
Qj
)(
~
Qj
~
ii
167 E