Walker H37i Operator's Manual

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75Maintenance Instructions ADJUSTMENTSBlade Clutch (PTO)Clutch Engagement/Belt TensionThe clutch engagement and PTO belt tension areadjusted using the clutch actuator link. After installingnew PTO belts, after 10 hours and every 100 hoursthereafter, check and adjust for the clutch spring assembly bolt head dimension as shown in the PTOClutch Engaged illustration. If the clutch actuatorlink or clutch spring assembly have been disassembled, first reset them to their factory preset lengths (asshown in the PTO Clutch Disengaged illustration)and then proceed with adjustment as follows.Adjust the length of the clutch actuator link to achievea clutch spring assembly bolt head clearance of1/4 in. to 5/16 in. (6 mm to 8 mm) with the clutchengaged. To adjust length: remove ball joint fromclutch arm and shorten the clutch actuator link toincrease this measurement, or lengthen the clutchactuator link to decrease this measurement. Ifadjustments are needed more frequently than every100 hours to maintain dimensions, it may suggestproblems with pulley wear or belt misalignment.PTO Clutch EngagedBlade ClutchEngaged1/4 in. to 5/16 in.(6 mm to 8 mm)Clutch ActuatorLinkBall JointClutch Spring Assembly(Spring Compressed)Clutch EngagementArmFront of MowerClutch ArmBlade ClutchIdler Pulley