British Seagull

About 2.5 million motors were produced

Parts

  • British Seagull: WSPC 586H2
    Standard fuel tank
    Model: Silver Century
    Series: Plus - clutch drive
    Production number 586
    August 1972
    HP: 5 to 5.5
    Ignition: Mk 2
    Gear Oil: SAE 140
    Dry Weight: 38 lbs
    Seagull - Amal carburetor: All Metal, Starboard side, 23 inch long cable
    Amal two jet - offset float chamber bottom feed
    Fuel/Oil Mix Ratio: 10 parts fuel to 1 part oil: 1 gal fuel gets 12.8 oz. oil
    Prop: Hydrofan, 5 Blade

  • British Seagull: WPC I603J9
    Larger fuel tank
    Model: Century
    Series: Plus - clutch drive
    Production number 1603
    September 1969
    HP: 4 to 4.5
    Ignition: Mk 2
    Gear Oil: SAE 140
    Dry Weight: 38 lbs
    Seagull - Amal carburetor: Plastic Cover, Port side
    Fuel/Oil Mix Ratio: 10 parts fuel to 1 part oil: 1 gal fuel gets 12.8 oz. oil
    Prop: Hydrofan, 5 Blade

  • Good method for Fuel Valve Repair using 0-rings
    Source for O-Rings:
    Charleston Rubber and Gasket - (843) 747-5738
    O-Ring size AS568 - 106
    Buna-N is good for fuel
    3/8" O.D.
    3/16" I.D.
    Section 5/32"
    Need (4) for the brass Seagull Fuel valve
    Cut off the cork seal from the fuel shut-off valve shaft, and slide on (4) of the O-rings

  • Successful method for Amal carburetor Banjo Bolt replacement:
    The carb cylinder housing for the original banjo bolt has a fine whitworth thread - the female aluminum thread often fails from cross threading and/or wear over time.
    Use a 5/8"-18 banjo bolt (the Triumph TR6 uses such a bolt)
    Have a machinist carefully bore out the aluminum housing for a helicoil and install the helicoil
    Note that EBay is a good source for helicoil kits
    Cut down the length of the new bolt as necessary
    Install the new banjo bolt with two fiber washers