On a small number of vehicles, the engine is programmed with an idle speed that is too low. During use of the aerial device, there is the potential for a sudden increase in engine speed. If this happens, the aerial device could move suddenly.
Sudden movement of the aerial device may result in injury to the operator and people nearby.
Altec Industries will notify owners by mail and provide instructions for contacting the company. Altec Service will install a software update to reprogram the low idle speed to 850 rpm.