Briggs Stratton 499421 Interlock Switch

Product Description

The BRIGGS STRATTON 499421 is an interlock switch designed for use in small engine-powered lawn and garden equipment. Interlock switches are safety components that prevent engine operation unless specific operator conditions are met, such as the operator being seated or a blade engagement lever being in a safe position. This switch is an OEM-style replacement part installed by small engine technicians and equipment service professionals during routine safety system maintenance or fault diagnosis.

The 499421 interlock switch is suited for residential lawn and garden equipment powered by Briggs Stratton engines. Typical installations include riding mowers, zero-turn mowers, and similar operator-presence safety circuits. This part is appropriate for equipment service shops and field technicians performing safety system repairs or seasonal maintenance on outdoor power equipment.

Key Features

• OEM-style replacement interlock switch for Briggs Stratton engine-equipped machines
• Functions as part of the operator-presence or safety interlock circuit
• Direct-fit replacement reduces diagnostic and installation time
• Designed for lawn and garden equipment safety system applications

Compatibility

Designed as an OEM-style replacement interlock switch for Briggs Stratton-powered lawn and garden equipment. Refer to your equipment service manual or Briggs Stratton parts lookup to confirm fitment for your specific model.

Installation Notes

Installation should be performed by a qualified small engine technician or equipment service professional. Disconnect the spark plug wire and allow all moving parts to come to a complete stop before beginning any switch replacement. Verify correct connector orientation and secure all wiring before returning the equipment to service. After installation, test all interlock functions before operating the equipment under load.

Technical Specifications

• Part Type: Interlock Switch
• Application: Lawn and Garden Equipment

Standard Information

• Brand: BRIGGS STRATTON
• Manufacturer Part Number: 499421