SPARK PLUGS
PROPELLER
WARNING
WARNING
The ignition system presents a serious
shock hazard. The primary circuit operates
in excess of 250 volts; the secondary circuit
operates in excess of 25,000 volts. Use cau-
tion to avoid injury from shock or injury
resulting from your reaction to shock. Do
not handle primary or secondary ignition
components while the engine is cranking or
running.
To avoid accidental starting of engine while
changing propellers, twist and remove all
spark plug leads.
IMPORTANT: Apply Triple-Guard grease to the en-
tire propeller shaft before installing the propeller. At
least annually, remove the propeller and check for
debris. Clean the shaft and regrease it before rein-
stalling a propeller.
Inspect spark plugs periodically. Replace if elec-
trodes are badly worn, insulators are cracked, or if
they are badly fouled.
Installation
Place the stopper on the shaft.
To remove spark plugs, twist and remove all spark
plug leads. Unscrew spark plug from cylinder head.
Align the propeller with the propeller shaft splines
and slide the propeller onto the shaft.
To install spark plugs, wipe spark plug seats clean
with a clean rag. Install spark plugs finger tight, then
tighten to specified torque. Refer to Engine Speci-
fications.
Place the spacer and washer on the shaft.
Install propeller nut and tighten to a torque of 21 -
23 ft. lbs. (29 - 31 N·m)
Align grooves in propeller nut with hole in propeller
shaft. Insert the cotter pin and bend its ends over to
lock in place.
IMPORTANT: Avoid engine damage by installing
spark plugs into COOL cylinder head and not over-
tightening.
Before installing the spark plug lead, apply a light
coat of Triple-Guard grease to the ribbed portion of
the spark plug. This will help prevent corrosion be-
tween the spring terminal and the spark plug.
4
6
5
3
2
1
1.
2.
3.
4.
5.
6.
Stopper
Propeller
Spacer
Washer
Propeller nut
Cotter pin
1.
Ribbed portion of the spark plug
40
- Maintenance
| Categories | Johnson 4-Stroke Manuals, Johnson Outboard Manuals |
|---|---|
| Tags | Johnson 25 hp, Johnson E4, Johnson EL4 |
| Model Year | 2006 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
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