After Test Run; General Periodic Maintenance; Checking The Anode; Checking The Battery (Optional For European Market) - Yamaha F4B Service Manual

MNT
3. For the remaining 8 hours c of
operation:
Operate the engine at any engine speed.
However, do not operate the engine at
full throttle for more than 5 minutes at a
time.
4. After the 1st 10 hours of operation:
Operate the engine normally.
a b
A
0 1
A Hour

After test run

1. Check for water in the gear oil.
2. Check for fuel leakage in the cowling.
3. Flush the cooling water passages using
fresh water. NOTICE: Do not perform
this procedure on land while the
engine is running. Otherwise, the
water pump could be damaged and
the engine could be severely damaged
due to overheating.
TIP:
When using the flushing device (flushing
hose joint adapter), flush the cooling water
passages without starting the engine.

General periodic maintenance

Checking the anode

Do not apply grease, oil, or paint to the
anodes. Otherwise, the anodes become
ineffective.
10-7
Maintenance
c
2 10
1. Check the anodes. See "Checking the
thermostat cover anode" (7-35), and
"Checking the lower unit anode" (8-4).
Checking the battery (optional for
European market)
1. Check the battery. See "Checking the
battery (optional for European market)"
(10-3).

Checking the cooling water passage

1. Check the water inlets a. Clean if
clogged.
2. Place the lower unit in water, and then
start the engine.
3. Check for water flow at the cooling water
pilot hole. If there is no water flow, check
the cooling water passage inside the
outboard motor.

Checking the engine idle speed

1. Install the special service tool a to spark
plug wire a.
a