"ISSUE: REPORTS HAVE BEEN RECEIVED OF ENGINE DAMAGE OCCURRING, WHICH IS CAUSED BY THE USE OF NON-APPROVED ENGINE INDUCTION / FUEL
INJECTION CLEANING EQUIPMENT OR MATERIALS. THIS INCLUDES, BUT IS NOT LIMITED TO, ""VACU-FLUSH"" TYPE EQUIPMENT.
CAUSE: THE USE OF NON-APPROVED EQUIPMENT CAN CAUSE THE ENGINES TO HYDRO-LOCK, OR CAUSE OTHER ENGINE DAMAGE, AND SOMETIMES THE
ONLY POSSIBLE REPAIR IS TO REPLACE THE ENGINE."
