SkyTrak 8042 Operation Manual - Manual (Page 159)

General Maintenance
157 Model 8042 Rev. 11/03
4. Start the vehicle and cycle the boom in and out several times. With
the boom horizontal, fully extend the boom and then retract it 2"
(51 mm) (one inch per section). Turn the vehicle OFF.
5. Measure the chain sag. Acceptable boom chain sag is between
1.5" (38 mm) and 2.5" (64 mm). If the chain sag is less than 1.5"
(38 mm), repeat steps 1 through 5 until the sag is within the accept-
able range.
NOTE: If the top boom extend chain sag cannot be adjusted within the
acceptable range of 1.5" (38 mm) to 2.5" (64 mm), the boom may require
extensive adjustment and/or repair. Contact your local Sky Trak Distributor.
6. Replace the rear outer boom cover.
OH0252
3