2006 Johnson SD 30 HP 4 Stroke Outboards Service Manual, PN 5006592, Page 202Get this manual
GEARCASE LEAK TEST
LEAK TEST
Drain lubricant before testingSTEP Install lubricant drainfill plug and seal, thread pressure test gauge fitting and seal in lubricant level holePressurize to psi (21 to 42 kPa)If pressure gauge indicates leakage, submerge the gearcase in water to determine source of leakIf the gearcase pressure gauge does not indicate leakage, increase pressure to 14 psi (100 kPa)Check for leakageMake necessary repairs and repeat testSTEP Complete successful STEP before proceedingInstall vacuum test gauge to the test fitting using adapter, PIN 772269Connect an air pump to the test gauge and apply vacuum of to inHg(10 to 17 kPa)
REMOVAL AND INSTALLATION