Yamaha F25A Service Manual

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1-1

GEN

INFO

IDENTIFICATION

A60000-1*

IDENTIFICATION

SERIAL NUMBER

The of the outboard motor’s serial number

is stamped on a label which is attached to

the port side of the clamp bracket.

NOTE:

For USA model:

As an antitheft measure, a special label on

which the outboard motor’s serial number

is stamped is bonded to the port side of the

clamp bracket. The label is specially treated

so that peeling it off causes cracks across

the serial number.

Model name

Approved model code

Transom height

Serial number

STARTING SERIAL NUMBERS

The starting serial number blocks are as fol-

lows:

Model name

Approval

model

code

Starting

serial

number

World-

wide

USA CANADA

F20AMH — — 65W

S: 650101 ~

L: 750101 ~

F20AEH — — 65W

S: 700101 ~

L: 800101 ~

F20AE — — 65W

S: 100412 ~

L: 500101 ~

F20AET — — 65W L: 600428 ~

F25AMH F25MH F25MH 65W

S: 150101 ~

L: 250101 ~

X: 550101 ~

F25AEH F25EH — 65W

S: 050503 ~

L: 350865 ~

F25AEHT — F25TH 65W L: 450355 ~

F25AE F25ER — 65W

S: 000183 ~

L: 300756 ~

F25AET F25TR F25TR 65W L: 401032 ~

Other manuals for Yamaha F25A

Owner's Manual232 pages

Questions and Answers:

B
Brian BernardAug 14, 2025
What to do if my Yamaha Outboard Motor engine will not start?
- E
  Emily PenaAug 14, 2025
  If your Yamaha Outboard Motor engine won't start but the starter is operating, several factors could be at play. First, ensure the fuel tank isn't empty and that you're using clean, fresh fuel. A clogged fuel filter could also be the culprit, so try cleaning or replacing it. Make sure you are following the correct starting procedure. Other potential issues include fouled or incorrect spark plugs (inspect, clean, or replace them), incorrectly fitted spark plug caps (check and refit), poor ignition wiring connections (check for wear, tighten, or replace wires), a missing engine stop switch lanyard (attach it), or damaged internal engine parts or fuel pump malfunctions, which would require servicing by a Yamaha dealer.
B
Brenda YoungAug 17, 2025
Why is the warning buzzer sounding on my Yamaha F25A Outboard Motor?
- N
  Norman SmithAug 18, 2025
  If the warning buzzer sounds or the indicator lamp lights on your Yamaha Outboard Motor, it could be due to several reasons. Check the water intake for any restrictions, as the cooling system might be clogged. Ensure the engine oil level is adequate and that you're using the specified engine oil. Also, the spark plug's heat range might be incorrect, so inspect and replace it if necessary. Other potential causes include contaminated or deteriorated engine oil (replace it), a clogged oil filter, or improperly distributed load on the boat (distribute the load evenly). For issues like a faulty water pump/thermostat or oil feed/injection pump malfunctions, it's best to have it serviced by a Yamaha dealer.