The resulting position of the anti-ventilation plate
must be 0 to 1 in. (0 to 25 mm) below the boat’s bot-
tom.
Bolt your engine to the boat’s transom using 8 mm
bolts, washers, lock washers, and nuts.
After positioning the engine, use the stern brackets
as a template for location and size of holes to drill in
the transom.
IMPORTANT: If the anti-ventilation plate falls out-
side the 0 to 1 in. (0 to 25 mm) range, the installa-
tion is not considered normal. The motor shaft
length must be changed or the boat’s transom must
be modified.
Drill two holes of the proper size through the tran-
som. Be sure to drill holes at right angles to the tran-
som.
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.
Apply a good waterproof caulk generously behind
the heads and to the shanks of the mounting bolts
before inserting them and to the surfaces of wash-
ers that contact the transom. Avoid RTV silicone
and polyurethane sealants as they can be dis-
solved by gasoline.
Higher than recommended – serious powerhead
damage could result from inadequate cooling or an
over-revving propeller. Propeller ventilation (slip-
page) often occurs, resulting in poor boat perfor-
mance.
Secure the engine with the mounting hardware po-
sitioned as shown.
After 30 minutes of operation, retighten clamp
screws by hand. DO NOT use tools to tighten clamp
screws. Check clamp screws regularly.
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 infor-
mation.
WARNING
INSTALLING THE ENGINE
When replacing bolts, screws, and other
fasteners, use Evinrude/Johnson Genuine
Parts or parts of equivalent strength and
material.
Center the engine on the boat’s transom (or mount-
ing bracket) and tighten the clamp screws by hand,
NOT with tools. See your Dealer for an accessory
transom plate to protect the boat’s transom.
1.
2.
Clamp screws
Accessory transom plate
40
- Installation
| Categories | BRP Brand Manuals, Johnson 4-Stroke Manuals, Johnson Brand Manuals, Johnson Outboard Manuals |
|---|---|
| Document Type | Boat Motor Manual. Marine Operator's Engine Guide. |
| Tags | Johnson 2.5 hp, Johnson R4 |
| Model Year | 2007 |
| Download File |
|
| Document File Type | |
| Publisher | johnson.com |
| Wikipedia's Page | Johnson Outboards |
| Copyright | Attribution Non-commercial |
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