Checking The Tilt System; Starting The Engine; Test Run; Break-In - Yamaha F4B Service Manual

Checking the tilt system

1. Move the shift lever to the N position.
2. Fully tilt up the outboard motor, and then
check that the outboard motor tilts up
smoothly and automatically locks in a,
b, c, d positions when it is tilted up.
3. Check that there is no interference with
hoses or leads when the tilted-up
outboard motor
equipped with the optional parts)
4. Slightly tilt the outboard motor up and
move the tilt lock lever to the release
position, and then fully tilt outboard motor
down. Check that the outboard motor tilts
down smoothly.
5. Check that the outboard motor does not
tilt up when the shift lever is moved to the
R position.

Starting the engine

Engine starting procedure differs depending
on the conditions.
1. Move the shift lever to the N position.
2. Check that the engine starts when the
starter handle a is pulled.
a
b
c
d
is steered. (When
a
3. Move the shift lever to the F or R position.
4. Check that the starter handle cannot be
pulled.

Test run

1. Start the engine, and then check that the
gear shift operates smoothly.
2. Warm up the engine, and then check the
engine idle speed.
3. Operate the engine at trolling speed.
4. Operate the outboard motor according to
the break-in procedure.
5. Check that the outboard motor does not
tilt up when the shift lever is moved to the
R position and that water does not flow in
over the transom.
TIP:
The test run is part of the break-in operation.

Break-in

Operate the engine under load (in gear with a
propeller installed) for 10 hours as follows:
1. For the 1st hour a of operation:
Operate the engine at varying speeds up
to 2000 r/min or approximately 1/2 throt-
tle.
2. For the 2nd hour b of operation:
Operate the engine at 3000 r/min or at
approximately 3/4 throttle.
Predelivery check
10-6
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A