Multiquip 12765 Gearbox 1.25 Shaft - OEM Replacement Part for Ride-On Trowels

This gearbox assembly transmits power from the engine to the trowel arms on ride-on power trowels, enabling precise blade rotation for concrete finishing operations. The 1.25-inch shaft configuration is engineered to mount directly to the spider plate assembly and drive the trowel arm rotation mechanism that controls blade pitch and finishing action.

Critical for machines experiencing uneven blade wear, perceptible rolling or bouncing motion during operation, or guard rings that rock up and down—all indicators outlined in Multiquip maintenance procedures that may stem from gearbox or spider assembly issues. The gearbox works in conjunction with the trowel arm adjustment system and bronze bushings to maintain proper blade alignment and consistent finishing performance. During trowel arm removal and reassembly procedures, the gearbox mounting interface at the spider plate must be cleaned of concrete buildup and inspected for wear. Regular maintenance includes checking alignment with mounting bars and ensuring proper torque specifications are maintained at all connection points.

Compatible with the following Multiquip models:

• HTN27KTCSL
• HTNS5S-2

Genuine Multiquip OEM part, sold by an authorized dealer.