Multiquip 21688 Operator Presence Switch Kit - OEM Replacement Part for Walk-Behind Trowels

The Operator Presence Switch Kit is a critical safety component that prevents the trowel engine from operating in a runaway situation when the operator releases the handle during operation. Also known as the centrifugal safety stop switch, this kit ensures the engine shuts down immediately if the operator loses control, protecting both personnel and equipment on the jobsite.

This safety switch system is referenced in troubleshooting procedures for engine starting issues and operational problems. During pre-operation inspection, technicians must verify the centrifugal safety stop switch is functioning properly before each use. If the trowel experiences starting failures or the engine won't respond with the key in the ON position, a faulty operator presence switch may be the cause. Regular inspection of this switch is essential to maintain safe trowel operation and prevent potentially dangerous runaway conditions.

Compatible with the following Multiquip walk-behind trowel models:

• B46

Genuine Multiquip OEM part, sold by an authorized dealer.