Service - 88 XT855 Operator’s Manual p 100 Hour 100 Hour Check Fan Belt Tension Adjust fan belt as needed. 1. Turn off engine and remove key. 2. Apply moderate thumb pressure to belt between pulleys where shown. 3. Belt is properly tensioned when deflection is about 1/4-3/8” (7-9 mm). 4. If needed, loosen alternator bolts (shown) and pull alternator out until correct tension is reached. Check Front Idler Roller Check front idler roller for wear every 100 hours. Replace as needed. CMW Task Notes Check fan belt tension Check front idler roller