1999 Volvo Penta "WT" Models Workshop Manual, Page 128Get this manual

1999 Volvo Penta "WT" Models Workshop Manual, Page 128

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Exhaust Manifold Removal
tester to hoseWith the pressure tester attached to the manifold,
submerge manifold in waterPressurize the manifold to 10-15 PSI (22-25 kPa) and check for leaksMani