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The JASON INDUSTRIAL MXV4-850 is a Kevlar-reinforced V-belt designed for demanding power transmission applications in farm, lawn, and garden equipment. Measuring 0.5 inches wide by 85 inches in outside circumference, this belt delivers the high tensile strength and heat resistance that Kevlar construction provides. It is sold as a single unit and is a direct replacement for worn or broken OEM drive belts in small-engine and tractor-driven equipment. Technicians and service pros working on outdoor power equipment specify Kevlar belts where standard rubber belts fail prematurely under heavy cyclic loads or high-temperature pulley conditions.
This belt is suited for residential and light commercial outdoor power equipment including farm tractors, riding mowers, zero-turn mowers, tillers, and similar lawn and garden machinery. The 0.5-inch top width places it in the standard 4L or MXV4 cross-section profile, which is common across a wide range of OEM deck drives, PTO drives, and ground-drive systems in this equipment category. Service technicians replacing worn drive belts on seasonal equipment will find this cross-section among the most frequently needed in the field.
Designed as an OEM-style replacement V-belt for farm, lawn, and garden equipment requiring a 0.5-inch wide by 85-inch MXV4 cross-section drive belt.
Belt replacement on outdoor power equipment should be performed by a qualified small-engine or power equipment technician. Disconnect the spark plug wire and disengage all power sources before removing belt guards or drive covers. Route the replacement belt following the OEM belt-routing diagram on the equipment deck or in the service manual. Avoid prying the belt over pulleys under tension, as this can damage Kevlar cords and reduce service life.
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