There are two types of overlap marks: reel overlap marks and roller overlap marks. This ensures that the front drive tires are doing the work in reverse rather than the rear tires, minimizing wheel slip and scuffing of turf when backing up an incline. The switch senses that the reverse pedal has been depressed and shuts off flow to the rear drive wheels. In reverse, a standard switch is provided that disengages 4WD. There are no electronics to engage the 4WD system, simplifying the electrical system and the design of the valve at the rear of the machine. The GRIP All-Wheel Drive Traction System is always engaged when driving forward with the PrecisionCut and E-Cut Hybrid fairway mowers. By allowing the flow to cross over to the opposite rear wheel, the system maintains traction not only while climbing straight up hills, but also on side hills, as well. This system reduces wheel slip by sending flow from the front wheel to the opposite rear wheel.įor example, if the front right wheel starts to slip, hydraulic flow is diverted to the left rear wheel to maintain positive traction. For superior traction with a true hydraulic four-wheel drive (4WD), the GRIP All-Wheel Drive Traction System is optional equipment for the PrecisionCut™ and E-Cut™ Hybrid fairway mowers.
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