2004 Johnson 25 30 hp E EL 2-Stroke Outboard Owners Manual

ADJUSTMENTS
Trim Tab
Carburetor
High  speed  fuel  calibration  is  maintained  by  the
fixed high speed jet in the carburetor. Fixed jets are
not adjustable.
Low speed fuel calibration is set at the factory with
a range of adjustment provided. If your engine dis-
plays poor running quality at low speed or idle, ask
your  DEALER  to  perform  the  necessary  adjust-
ments.
WARNING
Improper trim tab adjustment can cause dif-
ficult steering.
Steering Friction
A propeller will generate steering torque when the
propeller shaft is not running parallel to the water’s
surface. The trim  tab is adjustable to  compensate
for this steering torque.
The steering friction was set on your new motor be-
fore it left the factory. After the first 10 hours of ser-
vice, check to see that it is still correct. A slight drag
should be felt when turning the motor. If adjustment
is necessary, turn the adjustment screw:
IMPORTANT: A single trim tab adjustment will re-
lieve steering effort under only one set of speed,        •  Clockwise to increase friction; or
motor angle and load conditions. No single adjust-
ment  can  relieve  steering  effort  under  all  speed,
motor angle and load conditions. If the boat pulls to
the left or right when its load is evenly distributed,
adjust the trim tab as follows:
•  Counterclockwise to decrease friction.
With  the  motor  shut  OFF,  loosen  the  trim  tab
screw. If the boat pulled to the right, move the rear
of the trim tab slightly to the right. If the boat pulled
to the left, move the rear of the trim tab slightly to
the left.
1
1.
Steering friction adjustment screw
WARNING
DO  NOT  overtighten  for  “hands-off”  steer-
ing. Reduced steering control could result.
Tighten the trim tab screw to a torque of 60 to 85 in.
lbs. (7 to 9 N·m).
Test the boat and, if needed, repeat the procedure
until steering effort is as equal as possible.
High motor installations  —  The  trim  tab  might
be above the water when the motor is trimmed out.
Steering effort might increase. Steering effort will
be reduced if you trim the motor in and submerge
the trim tab.
Maintenance - 35
Product Specification
CategoriesBRP Brand Manuals, Johnson 2-Stroke Manuals, Johnson Brand Manuals, Johnson Outboard Manuals
Document TypeBoat Motor Manual. Marine Operator's Engine Guide.
Tags, , ,
Model Year2004
Download File
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- 56 pages
Document File TypePDF
Publisherjohnson.com
Wikipedia's PageJohnson Outboards
CopyrightAttribution Non-commercial
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