Manual release valve and/or O-
ring damage
Replace defective valve and O-
rings.
Manual release valve and O-rings
appear to be OK. Replace O-rings
and proceed.
Inspect Trim Rod Piston Check
Valve.
No debris or defective components
found.
Inspect Manifold Reverse Thrust
Valve.
Debris found in check valve com-
ponents.
Clean check valve components
using engine cleaner and com-
pressed air or replace.
Debris found in manifold reverse
thrust valve components.
No debris found in manifold re-
verse thrust valve.
Replace Manifold as a Unit.Clean manifold reverse thrust
valve (without removing) compo-
nents using engine cleaner and
compressed air or replace.
Inspect Manual Release
Valve.
Outboard will not hold tilted position in reverse
and/or trails out during high speed decelera-
tion.
Result
Result
ResultResult
Result Result
DO NOT ADJUST OR REMOVE
REVERSE THRUST VALVE. THIS
VALVE IS PRESET AT FACTORY
FOR PRECISE REVERSE THRUST
PRESSURE AND DOES NOT RE-
QUIRE ADJUSTMENT. REVERSE
THRUST VALVE COMPONENTS
CAN ONLY BE CLEANED USING
ENGINE CLEANER AND COM-
PRESSED AIR (THROUGH MAN-
IFOLD PORTS) WHILE VALVE
COMPONENTS REMAIN IN MAN-
IFOLD.
CAUTION
90-817643R1 DECEMBER 1996 MID-SECTION - 5B-15
Troubleshooting Flow Diagram
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