Yamaha F6B User Manual

129 pages

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1-16

Propeller diameter (in inches)

Propeller pitch (in inches)

Type of propeller (propeller mark)

Refer to the section “CHECKING PROPEL-

LER” for instructions on propeller removal

and installation.

EMU01209¯

START-IN-GEAR PROTECTION

Yamaha outboard motors or Yamaha

approved remote control units are equipped

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

feature permits the engine to be started only

when it is Neutral. Always select Neutral

before starting the engine.

Other manuals for Yamaha F6B

Service Manual202 pages

Ower's Manual134 pages

Questions and Answers:

J
Jessica SmithAug 19, 2025
Why is my Yamaha Outboard Motor losing power?
- N
  Nicole WilliamsAug 19, 2025
  If you're experiencing power loss with your Yamaha Outboard Motor, several factors could be responsible. Start by inspecting the propeller for damage and have it repaired or replaced if necessary. Check that the propeller's pitch and diameter are correct for optimal speed. Adjust the trim angle for efficient operation. Ensure that the boat bottom is clean from marine growth, and the gear housing isn't tangled with weeds or other foreign matter. Inspect the spark plugs, replacing them if they are fouled or incorrect. Also, make sure that you are using the specified engine oil. Check the fuel lines and filter for obstructions or clogs, and use clean, fresh fuel.
M
mckenziekimberlyAug 22, 2025
How to fix irregular idling or stalling in a Yamaha Outboard Motor?
- K
  katherinestanleyAug 22, 2025
  If your Yamaha Outboard Motor idles irregularly or stalls, there are several potential causes to investigate. Begin by checking the spark plugs; if they are fouled or the incorrect type, clean or replace them. Inspect the fuel system for any obstructions, such as pinched or kinked fuel lines. Ensure that you're using clean, fresh fuel. Clean or replace the fuel filter if it's clogged. Also, make sure that the air vent screw on the fuel tank is open and the choke knob is in home position. If applicable, ensure the fuel joint connection is correct and the battery lead is securely connected. Check that the motor angle is at normal operating position.

Yamaha F6B Specifications

General

Full Throttle RPM Range	5000 - 6000 rpm
Fuel System	Carburetor
Starting System	Manual
Gear Ratio	2.08:1
Lubrication	Wet Sump
Engine Type	4-Stroke
Max Output	6 hp
Prop Shaft Horsepower	6 hp
Shaft Length	15 inches
Gear Shift	F-N