Mariner 70 Service Manual page 320

Troubleshooting Flow Diagram
Result
Manual release valve and/or
O-ring damage.
Replace defective valve and O-rings.
6C-14
Outboard will not hold tilted position
in reverse and/or trails out during
high speed deceleration.
Inspect Manual Release Valve.
Result
No debris or defective
components found.
Inspect Manifold Reverse
Thrust Valve.
Replace Pump and Manifold Assembly.
POWER-TRIM
Result
Manual release valve and O-rings
appear to be OK. Replace O-rings
and proceed.
Inspect Trim Rod Piston Check Valve.
Debris found in check
valve components.
Clean check valve compo-
nents using engine cleaner and
compressed air or replace.
Result
90-13645--2 495