SPECIAL OPERATING CONDITIONS
High Altitude
If you boat at altitudes above 3000 ft. (900 m), your
engine might benefit from a lower pitched propeller,
different carburetor calibration, or both. See your
Dealer.
Salt Water
Flush the engine internally after use in salt, pollut-
ed, or brackish water to help prevent mineral de-
posits from clogging cooling passages. Your IMPORTANT: To avoid permanent powerhead
outboard has a built-in flushing port to facilitate
flushing. Refer to Flushing.
damage, be sure that an engine modified for high
altitude operation is properly identified and returned
to original calibration and propeller size if operated
below 3000 ft. (900 m).
During use in salt or brackish water, additional an-
odic protection for the boat and outboard may be re-
quired.
Shallow Water
During long periods of mooring, tilt the gearcase out
of the water — except in freezing temperatures.
Upon removal from salt water, leave it in a vertical
position until its cooling system has drained.
IMPORTANT: Serious engine damage will occur if
the gearcase is allowed to drag on the waterway
bottom.
Weedy Water
Freezing Weather
Weeds block water intakes and cause your out-
board to overheat. Weeds on the propeller create
vibration and reduce boat speed.
DURING operation in freezing weather, keep the
gearcase submerged at all times.
Upon removing your motor from the water, leave it
in a vertical position until its cooling system is
drained.
Run at slow speeds and in REVERSE frequently to
clear weeds from the propeller and water intakes.
Check the water pump indicator often.
If REVERSE operation does not clear away weeds,
IMPORTANT: Water that has leaked into the gear-
SHUT OFF the engine. Remove weeds from pro- case, or remained in the cooling system or other
peller area and water intakes before operating at components can freeze, causing serious engine
higher speed.
damage.
Boat Bottom and Engine External Finish
Submerged Engine
The condition of your boat’s bottom affects perfor-
If your engine has been under water, have it ser-
mance. A covering of marine growth reduces viced immediately upon recovery. If immediate
speed. For maximum performance, keep the boat’s
running surface clean by wiping it dry after each use
and washing it occasionally.
service is unavailable, resubmerge it in fresh water
to avoid prolonged exposure to the atmosphere.
After submersion, all boat and engine electrical, fu-
el, and oiling systems must be inspected for signs
of water intrusion. Your Dealer should perform this
service.
After operating your outboard, rinse it with fresh wa-
ter and wipe it dry. Apply Evinrude®/Johnson® anti-
corrosion spray to any surface subject to corrosion,
but avoid the anticorrosion anode(s).
Periodically, wash the entire boat and outboard with
soapy water and apply a coat of automotive wax.
Leave the engine cover in place when washing the
outboard.
Under Tow
Should you require a tow from another boat:
• Shift your engine to NEUTRAL;
•
•
Tilt its gearcase out of the water; and
Off-load all persons into another boat.
Keep towing speed slower than planing speed.
Operation - 27
| 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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