This Workshop Factory Repair Service Manual is designed for the Volvo Penta 230, 250, 251DOHC and AQ131, AQ151, AQ171 products. It contains technical data, repair instructions, and product descriptions for various product versions. The manual is a valuable resource for both professional mechanics and DIY enthusiasts.
Safety Precautions
General Information
Repair Instructions
Presentation
Trouble-shooting Scheme
Overhaul Data
Special Tools
Electrical System
Wiring Diagram AQ131, AQ151, 230, 250 Alt. 1
Wiring Diagram 230, 250 Alt. 2
Wiring Diagram AQ171, 251DOHC Alt.1
Wiring Diagram 251DOHC Alt. 2
Fuel System
Trouble shooting and Remedies Fuel System
Overhauling and checking the carburetor
Renix Ignition System
Trouble-shooting and repair ignition system 251DOHC, AQ171
Cylinder Head
Removal of the external components
Cooling System
Overhauling the heat exchanger
Overhauling the sea water pump
Check the thermostat
Overhauling the valve system
Overhauling the valve system 230, 250, AQ131, AQ151
Adjusting the valves 230, 250, AQ131, AQ151
Valve system 251DOHC, AQ171. Technical Description
Overhauling the valve system 251DOHC, AQ171
Installing the toothed belt
Installing the toothed belt 230, 250, AQ131, AQ151
Installing the toothed belt 251DOHC, AQ171
Installing the external components of the Cylinder Head
Cylinder Block
Removing the external components
Overhauling the Crank Assembly
The lubricating oil pump Overhauling
Installing the external components
Overhauling the oil cooler 250, 251DOHC, AQ151, AQ171
This Workshop Manual is an essential reference for anyone working with Volvo Penta products and is a valuable resource for performing repairs and maintenance.
