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

INSTALLATION
Use this procedure to determine whether or not the
boat’s  transom  height  is  correct  for  the  engine’s
shaft length:
Lift the engine using the lift grips (NOT the tilt grip
or steering handle) and place it in the center of the
boat’s transom.
WARNING
Your engine must not exceed the maximum
horsepower indicated on the boat’s capacity
plate. Such overpowering can cause loss of
control. Contact your DEALER or the boat’s
manufacturer if your boat lacks    a capacity
plate.
Boats designed for remote-steered engines
might  be  overpowered   by  a  tiller-steered
engine  of  the  maximum  rated  horsepower.
Ask  your  DEALER  or  boat  manufacturer  if
you are unsure about your boat’s suitability.
Incorrectly  matched  boat  and  engine  tran-
som heights can cause boat instability and
loss  of  control.  Refer  to  Transom  Height
and Shaft Length.
1
1
1.
Lift grips
Prevent   lateral   movement   and   possible
engine  loss  by  using  the  mounting  hard-
ware supplied or hardware of sufficient size,
strength, and quality. Refer to Installing the
Engine.
If equipped, tighten clamp screws    by hand, NOT
with tools.
Adjust the motor angle so the antiventilation plate is
parallel with the boat bottom. Refer to Motor Angle
Adjustment.
The  resulting  position  of  the  antiventilation  plate
must be no higher than the boat’s bottom and no
lower than 2 in. (51 mm) below it.
If the resulting position of the antiventilation plate is
above or below the 0 to 2 in. (0 to 51 mm) range,
the  engine  shaft  length  must  be  changed  or  the
boat’s transom must be modified.
A mounting  surface that is  damaged or  too
thin to support your engine while underway
might fail during operation, causing you to
lose control. Be sure the boat’s transom or
mounting bracket is structurally sound and
between 1 1/2 in. (38 mm) and 2 1/4 in. (57
mm) in thickness.
If you install and operate the engine:
Transom Height and Shaft Length
Lower than recommended — Serious powerhead
damage could result from water entry into the lower
engine cover or overloading from an under-revving
propeller at wide open throttle.
The  transom  height  dimension  listed  in   Engine
Specifications is the height of the boat transom
your engine needs. This dimension is measured at
the transom centerline, perpendicular to the bottom
of the boat.
Higher  than  recommended  —  Serious  power-
head damage could result from inadequate cooling
or  an  over-revving  propeller.  Propeller  ventilation
(slippage) often occurs, resulting in poor boat per-
formance.
On a specialty hull, non-planing  hull, or on  a boat
with a curved transom, these guidelines might not
apply. See your DEALER for special installation in-
formation.
1
3
2
dr3486
1.
2.
3.
Transom height
Antiventilation plate
Final position – 0 to 2 in. (0 to 51 mm)
46
- Maintenance
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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