Exhaust Pressure Fitting; Operation Test; Cleaning - BRP EVINRUDE E-TEC 200 Service Manual

.ROUTINE SERVICE

EXHAUST PRESSURE FITTING

EXHAUST PRESSURE
FITTING
The exh aust pressure fitting is t hreaded into the
adapter housing and protrudes into the
exhaust.
1
1. Exhaust pressure fitting
A hose is routed from this fitting to t he EMM. Due
to carbon accumulation in the exhaust, this fitting
must be periodically de-carbonized or replaced.

Operation Test

Use the Evinrude Diagnostics sof tware Monitor
screen to confirm:
•
barometric pressure reading; and
•
changes in exhaust pressure reading.
With key ON, outbo ard NOT runn ing, make sure
the barometric pressure readin g reflect s actu al
atmospheric conditions.
If barometric pressure reading
remove exhaust/barometric pre ssure hose fro m
EMM. Retest and observe engine Monitor screen.
If b arometric p ressure read ing is accurat e with
hose remo ved, replace hose and diaphrag m
assembly. and inspect ex haust fitting for re stric-
tion.
42
With key ON, outb oard NOT running, the exhaust
pressure sensor reading should be close to zero.
With the outboard running, make sure the exhaust
pressure reading chang es wit h thrott le settin g.
This reading will vary, based on actu al outboa rd
inner
exhaust pressure conditions.
If the exhaust pressure rea
described, clean or replace exhaust pre ssure fit-
tings.
1
005026
2
Engine Monitor Screen
1. Barometric pressure reading
2. Exhaust pressure reading

Cleaning

Cleaning with Engine Tuner maintenance product
can dissolve carbon build-up.
Spray Engine Tuner through the fitting and allow it
to soak for four to six hours.
is inaccura te,
Wear safety glasse s to
injury, and set compressed air pressure to
less than 25 psi (172 kPa).
Use comp ressed air to blow thro ugh the fitting.
Limit the air pressure to 25 psi (170 kPa). Confirm
movement of air through fitting.
IMPORTANT:
ment.
Replace exhaust press ure fittings that are
blocked and cannot be decarbonized.
dings are not as
A
WARNING
avoid personal
Fitting does restrict air
008566
move-