Yamaha E40X Owner's Manual download pdf (Page 18)

Specifications and requirements

12

EMU25770

Start-in-gear protection

Yamaha outboard motors or Yamaha-ap-

proved remote control units are equipped

with start-in-gear protection device(s). This

feature permits the engine to be started only

when it is in neutral. Always select neutral

before starting the engine.

EMU25651

Engine oil requirements

If the recommended engine oil is not avail-

able, another 2-stroke engine oil with an

NMMA-certified TC-W3 rating may be used.

EMU36360

Fuel requirements

EMU36771

Gasoline

Use a good quality gasoline that meets the

minimum octane rating. If knocking or ping-

ing occurs, use a different brand of gasoline

or premium unleaded fuel. Yamaha re-

comends that you use alcohol-free (see Gas-

ohol) gasoline whenever possible.

NOTICE

ECM01981

● Do not use leaded gasoline. Leaded

gasoline can seriously damage the en-

gine.

● Avoid getting water and contaminants

in the fuel tank. Contaminated fuel can

cause poor performance or engine

damage. Use only fresh gasoline that

has been stored in clean containers.

Gasohol

There are two types of gasohol: gasohol con-

taining ethanol (E10) and that containing

methanol. Ethanol can be used if the ethanol

content does not exceed 10% and the fuel

meets the minimum octane ratings. All etha-

nol blends containing more than 10% etha-

nol can cause fuel system damage or cause

engine starting and running problems.

Yamaha does not recommend gasohol con-

taining methanol because it can cause fuel

system damage or engine performance

problems.

EMU36880

Muddy or acidic water

Yamaha strongly recommends that you have

your dealer install the optional chromium-

plated water pump kit if you use the outboard

motor in muddy or acidic water conditions.

However, depending on the model it might

not be required.

EMU36330

Anti-fouling paint

A clean hull improves boat performance. The

boat bottom should be kept as clean of ma-

rine growth as possible. If necessary, the

1. Propeller diameter in inches

2. Propeller pitch in inches

3. Type of propeller (propeller mark)

Recommended engine oil:

YAMALUBE 2-stroke outboard motor

oil

ZMU04606

-

x

123

Recommended gasoline:

Regular unleaded gasoline

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