MotorVac TRANSTECH HD - Manual (Page 17)

ADDITIONAL HELP
Please verify that items 1-6 above have been reviewed before calling for
additional assistance.
In the unlikely event that problems persist with the unit call
Technical Support, have your model and serial numbers available before
you call. Remember to send in your warranty card.
In the U.S.
Outside the U.S.
(800) 841-8810 Call your local distributor