1999 Volvo Penta "WT" Models Workshop Manual, Page 44Get this manual
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Tune-up Specifications _
IdleW.O.T550-650 RPM 4400-4800 RPM
600 RPMNot Adjustable 4600-5000 RPM
Idle600 RPMNot Adjust&ble W.O.T 4200-4600 RPM
Idle60