Gearcase Pressure & Vacuum Tester for Outboards & Sterndrives

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About this product

Check the sealing condition of your outboard lower unit or sterndrive with this combined pressure and vacuum tester. It allows you to test whether a compatible gearcase holds pressure and vacuum, helping identify leaks that could allow gear oil to escape or water to enter. Useful during routine servicing, leak investigation and after seal replacement, the tester supports a more thorough assessment than checking the drained oil alone. Testing in both directions helps evaluate the seals under different conditions. Product details Type: Combined pressure and vacuum tester Function: Gearcase leak and seal-integrity testing Application: Compatible outboard lower units and sterndrives Adaptors: Supplied for a range of gearcase connections Listed outboard applications: Selected Chrysler, Evinrude, Force, Johnson, Mariner, Mercury, Suzuki, Tohatsu and Yamaha models Sterndrive application: Selected Volvo Penta drives Intended use: Maintenance, fault-finding and checks following seal repairs Check compatibility Confirm that the supplied adaptor matches your gearcase’s test connection. Engine make alone does not confirm fitment, as connection threads and testing procedures vary between models

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