VOLVO PENTA 230 250 251 AQ131 AQ151 AQ171 Workshop Manual

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.