1 1

Volvo

VOLVO PENTA 230 250 251 AQ131 AQ151 AQ171 Workshop Manual PDF Download

VOLVO PENTA 230 250 251 AQ131 AQ151 AQ171 Workshop Manual PDF Download

$16.99
$16.99
Sale Sold out
Shipping calculated at checkout.
Machine data plateRef 37902
Brand
Volvo
Equipment
Marine
Models covered
Inboard Engines, Penta 100, Volvo Penta
Format
PDF, searchable, print-ready
Delivery
Instant download after checkout
Language
English

What happens after you pay

  • Download link opens on the order page immediately
  • The same link is emailed to you — re-download any time
  • Open on phone, tablet or PC; print only the pages you need
  • Not sure it covers your serial range? Ask us before you buy
VOLVO PENTA 230 250 251DOHC AQ131 AQ151 AQ171 WORKSHOP FACTORY REPAIR SERVICE MANUAL 230, 250, 251DOHC AQ131, AQ151, AQ171 This Workshop Manual contains technical data, descriptions and repair instructions for Volvo Penta products or product versions contained in the contents list. Safety Precautions .............................................................................. 2 General information ............................................................................ 5 Repair instructions ............................................................................. 6 Presentation ........................................................................................ 8 Trouble-shooting Scheme ..................................................................11 1. Overhaul Data ...............................................................................12 2. Special Tools ................................................................................20 3. Electrical System .........................................................................23 Wiring Diagram AQ131, AQ151, 230, 250 Alt. 1. ........................24 Wiring Diagram 230, 250 Alt. 2 ..................................................26 Wiring Diagram AQ171, 251DOHC Alt.1. ..................................28 Wiring Diagram 251DOHC Alt. 2 ...............................................30 4A. Fuel System ..................................................................................32 Trouble shooting and Remedies Fuel System ............................32 Overhauling and checking the carburetor ...................................33 4B. Renix Ignition System..................................................................38 Trouble-shooting and repair ignition system 251DOHC, AQ171 38 4C. Cylinder Head ...............................................................................44 Removal of teh external components .........................................44 4D. Cooling System ............................................................................48 Overhauling the heat exchanger .................................................48 Overhauling the sea water pump ................................................49 Check the thermostat..................................................................49 4E. Overhauling the valve system .....................................................50 Overhauling the valve system 230, 250, AQ131, AQ151 ...........50 Adjusting the valves 230, 250, AQ131, AQ151 ..........................59 Valve system 251DOHC, AQ171. Technical Description ...........61 Overhauling the valve system 251DOHC, AQ171 ......................63 4F. Installing the toothed belt ...........................................................71 Installing the toothed belt 230, 250, AQ131, AQ151 ......................71 Installing the toothed belt 251DOHC, AQ171.................................73 4G. Installing the external components of the Cylinder Head ........74 5. Cylinder Block ..............................................................................78 5A. Removing the external components ...........................................78 5B. Overhauling the Crank Assembly ...............................................80 The lubricating oil pump Overhauling..........................................87 5C. Installing the external components ............................................93 Overhauling the oil cooler 250, 251DOHC, AQ151, AQ171 ........95 Workshop Manual

Delivery & file format

This is a digital PDF download, not a printed book. After payment the download link appears on your order confirmation page and is emailed to the address you entered. Files open in any PDF reader on phone, tablet or computer and can be printed.

Check the serial range before you buy

Manufacturers change procedures and part numbers by serial-number break. If your data plate shows a serial prefix that is not listed above, contact us with the model and serial number and we will confirm coverage before you order.

View full details
  • Instant download PDF link on your order page and by email right after payment.
  • Secure checkout Encrypted Shopify checkout — we never see your card.
  • Print-ready PDF Searchable text, print the pages you need for the workshop.
  • Phone, tablet, PC Open it in the cab, the workshop or the office.