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Mercury 40 Service Manual

Mercury 40
599 pages
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BIGFOOT GEAR HOUSING
Page 6B-62 90-828631R3 MARCH 1999
Trim Tab Adjustment
1. Check trim tab position as follows:
Operate boat at the speed at which it normally would be operated.
If the boat pulls to the right (STARBOARD), the trailing edge of trim tab must be
moved to the right. If the boat pulls to the left (PORT), the trailing edge of trim tab
must be moved to the left.
2. If necessary, adjust trim tab as follows:
Shift engine control into NEUTRAL and turn ignition key to “OFF” position.
NOTE: Loosen trim tab bolt sufficiently to allow trim tab to disengage from locking ridges
in gear case before attempting to move tab. DO NOT strike trim tab with a hard object to
make adjustments.
If boat pulls to the left, adjust trailing edge of trim tab to the left. If boat pulls to the
right, adjust trailing edge of trim tab to the right.
3. Tighten trim tab retaining bolt and washer to 22 lb-ft (29.8 Nm).

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Mercury 40 Specifications

General IconGeneral
Horsepower40 hp
Starting SystemElectric
SteeringRemote
Fuel Induction SystemEFI (Electronic Fuel Injection)
Shaft Length20"
Full Throttle RPM Range6000

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