2-19
BF135A•BF150A
Water in the fuel.Engine sometimes mis-
fires or stalls.
• Check for water in the low pres-
sure fuel strainer. Replace if nec-
essary (P. 3-15).
• Check for water in the water sep-
arator and drain if necessary (P.
3-19).
• Check for water in the fuel tank
and drain if necessary.
High pressure fuel strainer clogged.
Replace the (high pressure) fuel
strainer (P. 3-18).
Low pressure fuel strainer clogged.
Replace the (low pressure) fuel
strainer (P. 3-15).
Fuel tube faulty.
High pressure fuel system faulty.
• Check for pinched or collapsed
tube line and correct if necessary.
• Check the air vent knob of the
tank. Open the air vent knob if it is
closed.
• Check the primer bulb for air leak-
age. Replace if necessary.
Perform fuel supply system trouble-
shooting (P. 5-96).
Propeller mismatched.Excessive engine speed Replace with the correct propeller.
Propeller faulty.
Replace the propeller.
Outboard installation setting incor-
rect (e.g. transom height, tilt angle,
etc.)
Adjust the installation setting.
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