Sea-Dog 420383-1 Three Position Magneto Style Ignition Switch, Push to Choke, OEM 710542 Equivalent

The Sea-Dog 420383-1 is a three position magneto style ignition switch built for off, ignition, start, and choke operation on a single panel-mounted switch. It uses a 13/16 inch diameter short shaft designed for panels up to 5/8 inch thick, making it a straightforward swap on helm and dash panels with a standard ignition switch cutout. The switch connects via six wires and is rated for 15 amps at 12VDC on the ignition circuit, 30 amps at 12VDC on the solenoid circuit, and 7 amps at 12VDC on the choke circuit, covering the electrical load of typical ignition, starter solenoid, and choke functions on a single switch.

The housing is constructed of polypropylene for corrosion resistance in a marine environment. The switch operates as push to choke, and two keys are included so the boat owner has a spare on hand from the start. A blank replacement key (Sea-Dog 420399C) is also available separately if additional or replacement keys are needed later. This switch is functionally equivalent to OEM part number 710542.

Specifications

• Brand: Sea-Dog
• Manufacturer Part Number: 420383-1
• Switch Type: Three Position Magneto Style Ignition Switch
• Function: Off, Ignition, Start, Choke
• Panel Shaft Diameter: 13/16 inch
• Maximum Panel Thickness: 5/8 inch
• Shaft Type: Short
• Electrical Terminals: 6 wires
• Ignition Rating: 15 amps at 12VDC
• Solenoid Rating: 30 amps at 12VDC
• Choke Rating: 7 amps at 12VDC
• Material: Polypropylene
• Keys Included: 2
• Operation: Push to Choke
• Weight: 0.228 pounds
• OEM Equivalent Part Number: 710542

Fitment

This is a panel-mount ignition switch sized for a 13/16 inch diameter short shaft and panels up to 5/8 inch thick; no specific engine make, horsepower, or model fitment is listed for this switch.

Replaces (OEM)

• 710542

Frequently Asked Questions

What functions does the Sea-Dog 420383-1 ignition switch have? The 420383-1 is a three position magneto style ignition switch with off, ignition, start, and choke functions in a single switch.

What is the OEM equivalent part number for the 420383-1? OEM part number 710542 is equivalent to the Sea-Dog 420383-1 ignition switch.

What is the maximum panel thickness this switch fits? A panel up to 5/8 inch thick is the maximum thickness the 420383-1 short shaft is designed for.

What is the shaft diameter on this switch? 13/16 inch is the panel shaft diameter of the Sea-Dog 420383-1 ignition switch.

How many wires does the 420383-1 use for installation? Six wires connect to the 420383-1, matching its ignition, solenoid, and choke circuits.

What material is the Sea-Dog 420383-1 switch made of? Polypropylene housing construction is used on the 420383-1 ignition switch for corrosion resistance.

Does the 420383-1 come with keys? Two keys are included with the Sea-Dog 420383-1 ignition switch.

What are the amperage ratings on this switch? The 420383-1 is rated 15 amps at 12VDC for ignition, 30 amps at 12VDC for the solenoid, and 7 amps at 12VDC for the choke circuit.

What does push to choke mean on this switch? Push to choke means the choke function on the 420383-1 is engaged by pushing the switch knob in, separate from the off, ignition, and start rotary positions.

Is a replacement key available for this switch? Yes, Sea-Dog offers a blank replacement key, part number 420399C, for the 420383-1 ignition switch.

How much does the 420383-1 ignition switch weigh? 0.228 pounds is the weight of the Sea-Dog 420383-1 ignition switch.

Is the 420383-1 a universal fit or specific to certain engines? The Sea-Dog 420383-1 is a panel-mount switch sized to a 13/16 inch short shaft and 5/8 inch max panel thickness; no specific engine model fitment is listed.