Counter Rotation Models; Start-In-Gear Protection; Engine Oil Requirements - Yamaha F250B Owner's Manual

Specifications and requirements
x -
1 2 3
1. Propeller diameter in inches
2. Propeller pitch in inches
3. Type of propeller (propeller mark)
EMU36310

Counter rotation models

Standard outboard motors rotate clockwise.
Counter rotation models rotate counterclock-
wise. Counter rotation models are typically
used in multiple motor setups and are marked
with an "L" on the gear case above the anti-
ventilation plate.
On counter rotation models, be sure to use a
propeller intended for counterclockwise rota-
tion. These propellers are identified with the
letter "L" after the size indication on the pro-
peller. WARNING! Never use a standard
propeller with a counter rotation motor, or
a counter rotation propeller with a stan-
dard motor. Otherwise the boat could go
in the direction opposite of that expected
(for example, reverse instead of forward),
which could lead to an accident.
For instructions on propeller removal and in-
stallation, see page 79 and 79.
EMU35140

Start-in-gear protection

Yamaha outboard motors or Yamaha-ap-
proved digital electronic control units are
equipped with start-in-gear protection de-
vice(s). This feature permits the engine to be
started only when it is in neutral. Always se-
lect neutral before starting the engine.
12
EMU37475

Engine oil requirements

Recommended engine oil:
4-stroke motor oil with a combination
of the following SAE and API oil clas-
sifications
Engine oil type SAE:
10W-30 or 10W-40
Engine oil grade API:
SE, SF, SG, SH, SJ, SL
ZMU04607
Total engine oil quantity (oil pan capaci-
ty):
5.6 L (5.92 US qt, 4.93 Imp.qt)
Replacement engine oil quantity (at peri-
odic maintenance):
Without oil filter replacement:
With oil filter replacement:
If the recommended engine oil grades are not
available, select an alternative from the fol-
lowing chart according to the average temper-
atures in your area.
[EWM01810]
4.5 L (4.76 US qt, 3.96 Imp.qt)
4.7 L (4.97 US qt, 4.14 Imp.qt)