IMPORTANT: Minimum pressures may be used only for light loads
and only if tractor has no added weight. If you install ballast or
mounted implements, or if you pull heavy loads, increase pressure.
At least every 100 hours of operation, check tires with an accurate
gauge having 10 kPa (0.1 bar) (1 psi) graduations. If tires contain
liquid ballast, use a special air-water gauge and measure with valve
stem at bottom.
Refer to Tire Inflation Pressure Chart in Wheels, Tires and
Treads section.