15Section 3: Adjustments10/11/06 FD2560, FD2572, AT2560 & AT2572 Grooming Mower, 3-spindle 310-148MLand Pride Table of Contents5. Set the parking brake and turn off tractor. Removekey from ignition.6. Adjust the tractor top link in or out to place the upperhitch pin vertically above the lower hitch pin asshown in Figure 3-1, Figure 3-2, or Figure 3-3, toallow mower flotation.7. Rotate blades in line with direction of travel.8. Measure the clearance from the cutting edge to theground at front and rear of the blade. Thismeasurement should be equal or have the blade atthe front of the mower not more than 1/2" lower thanthe blade at the rear of the mower.Cutting Height Adjustment1. Using the tractor, raise the mower off the ground andsupport under it with secure blocking so not to let themower drift down during maintenance.2. Holding wheel and yoke assembly up, remove quick-lock pin from top of gauge wheel spindle. Position fulllength spacers and half spacer as required. Allspacers on top of spindle tube allows forapproximately 1" cutting height. Adjustments rangefrom 1" to a maximum of 5 1/2" in 1/2" increments.Refer to “Leveling The Mower” page 14.! CAUTIONEngage parking brake, shut off tractor, remove key anddisengage PTO before making any height adjustments!Belt TensionRefer to Figure 3-4:! CAUTIONBelt drive system under spring tension; use care to avoid bodilyharm!1. To check tension apply force at arrow A. With atension tester and deflect the belt 1/4". The forcerequired to get this deflection should range from 7 to10 lbs.2. To adjust belt tension, adjust eyebolt (#1), asnecessary. This adjustment will increase or decreasethe tension on spring (#2).3. Excessive tension on the belt may lead to prematurefailure of belt and drive components. Excessivetension on the belt may also lead to a safety hazardto the operator or bystanders. Not enough tension onthe belt may lead to premature failure of the belt dueto excessive slipping.4. Excessive tension on the belt may lead to prematurefailure of belt and drive components. Excessivetension on the belt may also lead to a safety hazardto the operator or bystanders.Belt TensionFigure 3-412732