– 34 –MaintenanceCrawler tension boltLock nutLoose track tension can cause the tracks to come off the machine, causing damage to themachine and possibly serious injury or death to the operator or bystanders.During the first 100 hours of use, the tracks stretch and the track tension loosens.Check track tension during the preoperation inspection and as part of monthly inspections,as specified in the Regular Inspection Chart.NOTICE1. Jack up the front and rear of the chassis to raise thecrawler on one side and make it horizontal to theground surface.Perform this step with extra care so that the jackdoes not move from the specified positions.NOTICE7.7.5 Track Tension2. Raise the deck (See page 19).3. Loosen the lock nut of the crawler tension bolt.4. Rotate the crawler tension bolt to adjust the clearance(H in the figure) between the crawler and the lowestpart of the rollers to 10 to 15 mm.5. Lower the deck (See page 19).