1999 Volvo Penta "WT" Models Workshop Manual, Page 34Get this manual

1999 Volvo Penta "WT" Models Workshop Manual, Page 34

Positive Closed-Type Ventilation System A malfunctioning closed crankcase ventilation system may be indicated by loping or rough engine idleDo not attempt to compensate for thiS idle condition by disconnecting the crankcase ventilation system and making carburetor adjustmentsThe

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