Warm-Up And Operational Checks; Warm-Up Check; Operational Check - JLG 642 Operation & Safety Manual

Section 2—Pre-Operation and Inspection
2.5

WARM-UP AND OPERATIONAL CHECKS

Warm-Up Check

During warm-up period, check:
1. Heater, air conditioning and wipers (if equipped).
2. Check all lighting systems (if equipped) for proper operation.
3. Adjust mirrors for maximum visibility.
CUT/CRUSH/BURN HAZARD. Keep engine cover closed while engine is running
except when checking transmission oil level.

Operational Check

When engine warms, perform an operational check:
1. Service brake and parking brake operation.
2. Forward and reverse travel.
3. Each gear.
4. Steering in both directions with engine at low idle (steering lock to lock will not be
reached). Check in each steering mode.
5. Horn and back-up alarm. Must be audible from inside operators cab with engine
running.
6. All joystick functions operate smoothly and correctly.
7. Perform any additional checks described in Section 8.
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