Mercury 40 Service Manual

POWER TRIM
Page 5B-28 90-828631R3 MARCH 1999
Replace trim system
continued
Replace memory pis-
ton and shock piston
O-rings
Inspect memory piston
O-ring and cylinder
bore
Cylinder bore appears
smooth with no debris
Cylinder bore appears
rough and/or debris
found in cylinder
Trim leaks down
Trim system does
not leak down:
Testing complete
Remove PO check valve
assembly, inspect O-
rings and seals for dam-
age
Debris and/or damage
identified
Replace PO check
valve assembly
PO check valve appears
O.K. - Clean and reinstall
PO check valve assembly
Trim system leaks
down
Trim system does
not leak down:
Testing complete
Trim system does
not leak down:
Testing complete

Mercury 40 Specifications

General

Horsepower	40 hp
Starting System	Electric
Steering	Remote
Fuel Induction System	EFI (Electronic Fuel Injection)
Shaft Length	20"
Full Throttle RPM Range	6000