All about the product

Drive Belt for Lawnmower / Tractor YT-85550 | 4L 405K | 1029 mm (YT-861960)

4L 405K drive belt designed for the lawnmower / garden tractor YT-85550 ensures efficient power transmission to the cutting system. Made of durable Buna-N rubber, reinforced with fiberglass, it exhibits high resistance to stretching, wear, and elevated temperatures during intensive work.

The belt has a length of 1029 mm, and the 4L 405K profile matches the factory parameters of the YT-85550 drive system. The correctly selected length and profile allow for proper tension maintenance, reduces slipping and transmission losses, and helps protect the pulleys and bearings from premature wear. More original YATO belts and spare parts for garden equipment can be found at www.atsuktuvas.lt.

Main Features

• High-quality 4L 405K V-belt.


• Designed for the garden tractor / lawnmower YT-85550.


• Buna-N rubber with fiberglass reinforcement.


• Resistance to stretching, wear, and temperature fluctuations.


• Ensures stable power transmission to the cutting system.

Technical Specifications

• Brand / series: Yato, GRD (EU representative: TOYA S.A.).


• Suitable for: lawnmower / tractor YT-85550.


• Belt type: 4L 405K V-belt.


• Belt circumference (length): 1029 mm.


• Material: Buna-N rubber, fiberglass.


• Purpose: power transmission to cutting blades.


• Symbol: YT-861960.

Purpose and Use

• Used as a replacement for a worn, stretched, or broken original belt.


• Suitable for regular and intensive lawn cutting in various areas.


• Helps maintain a steady blade rotation speed and quality cutting results.


• It is recommended to regularly check the belt's condition, tension, and the surface of the pulleys.