Product Line:
Sterndrive (inboard/outboard) drive units
Model Series:
DP-A, DP-B, DP-C
Model Variant:
Duoprop (DP) dual counter-rotating propeller configuration
Production Years Covered:
N/A - not specified in the manual; DP-A/B/C series spanned the late 1980s through the 1990s
Manual Type:
Service Repair Manual
Document Format:
PDF download
Intended Users:
Marine technicians and DIY boat owners
Coverage Scope:
DP-A, DP-B and DP-C sterndrive units and associated systems
Delivery:
Instant download
Target Audience:
Owners and service technicians of Volvo Penta DP-A/B/C sterndrive-equipped boats
Product Category:
Marine sterndrive propulsion service documentation
Configuration:
Duoprop dual-propeller sterndrive, DP designation
Counter-Rotating Props:
Duoprop design improves acceleration, tracking and fuel efficiency over single-prop drives
Maneuverability:
Dual counter-rotating propellers reduce steering torque and improve docking control
Service Depth:
Covers engine-related components, fuel and cooling systems, drivetrain, steering, brakes, electrical and body/interior elements
Wiring Diagrams:
Included
Maintenance Checklists:
Included
Reference Charts:
Included
Safety Guidelines:
Included
Troubleshooting:
Step-by-step fault diagnosis procedures
Manual Type:
Service Repair Manual
Delivery Method:
Instant download
Page Count:
N/A - not specified in the supplied description
Printable:
Yes - pages can be printed from the PDF
Engine-Related Components:
Covered
Electrical Systems:
Covered
Body and Interior Elements:
Covered
Included Reference Material
Wiring Diagrams:
Included
Maintenance Checklists:
Included
Safety Guidelines:
Included
Engine:
Engine-related components covered
Fuel System:
Inspection, service and repair procedures
Cooling System:
Raw-water and closed-circuit cooling component service
Drivetrain:
Sterndrive transom shield, gimbal and drive unit service
Duoprop Lower Unit:
Dual counter-rotating propeller assembly service and propeller installation
Steering:
Steering system adjustment and repair
Brakes:
Covered where applicable to the installation
Electrical:
Wiring, connectors and electrical fault diagnosis
Body and Interior:
Installation-related body and interior elements
Troubleshooting:
Systematic fault-finding procedures
Maintenance:
Scheduled maintenance and inspection routines
Repair:
Component removal, overhaul and reassembly
Adjustments:
Linkage, shift and trim adjustment procedures
Wiring Diagrams:
Full electrical schematics
Level:
Component-level service and repair detail
Charts:
Tolerance and specification charts included
Safety Guidelines:
Provided throughout the procedures
Maintenance Checklists:
Provided for scheduled servicing
Component Identification:
Parts and assemblies identified within the procedures
Part Numbers:
N/A - not confirmed in the supplied description
Exploded Views:
N/A - not confirmed in the supplied description
File Format:
PDF (searchable, bookmarked, zoomable)
Compatibility:
Windows, macOS, Linux, iOS, and Android — any device with a PDF reader
Requirements:
A PDF reader application (e.g. Adobe Acrobat Reader, free)
Searchability:
Fully text searchable for fast lookup of any topic
Print Quality:
High-resolution digital pages, printable at full clarity
Binding Type:
N/A — digital download, no physical binding
Paper Type:
N/A — digital download, no physical paper
Engine Options:
Petrol and diesel marine engines matched to DP-A, DP-B and DP-C sterndrive units
Engine Displacement:
N/A - not specified in the supplied description
Cylinder Configuration:
N/A - not specified in the supplied description
Drive Designation:
DP-A, DP-B, DP-C sterndrive series
Propeller Configuration:
Duoprop, dual counter-rotating propellers
Rated Output:
N/A - depends on the engine installed; not specified in the manual
Maximum RPM:
N/A - not specified in the supplied description
Fuel System Type:
Covered within the fuel system section of the manual
Fuel Delivery:
N/A - varies with the engine installed
Standard Transmission:
Volvo Penta sterndrive with Duoprop dual counter-rotating propeller output
Optional Transmission:
N/A - not specified in the supplied description
Gear Selection:
Forward, neutral and reverse via sterndrive shift mechanism
Trim System:
Power trim and tilt
Counter-Rotating Propellers:
Two propellers on a common shaft turning in opposite directions
Efficiency:
Duoprop design contributes to enhanced efficiency
Maneuverability:
Duoprop design contributes to improved maneuverability
Lubrication:
Drive unit gear lubricant - see Maintenance card
Wheelbase:
N/A - not applicable to a marine sterndrive
Overall Length:
N/A - not specified in the supplied description
Drive Unit:
Sterndrive transom-mounted unit with Duoprop lower gearcase
Curb Weight:
N/A - not applicable to a sterndrive unit
Dry Weight:
N/A - not specified in the supplied description
Trim Range:
Power trim and tilt operation covered in the manual
Crash Test Ratings:
N/A - not applicable to a marine sterndrive
Certification:
N/A - not specified in the supplied description
Power Trim:
Electric/hydraulic trim and tilt to control running attitude
Shift Control:
Forward, neutral and reverse gear engagement
Steering:
Sterndrive steering system covered in the manual
Safety Guidelines:
Included in the manual for safe servicing
Corrosion Protection:
Anode and corrosion protection maintenance included in the service routines
Audio System:
N/A - not applicable to a sterndrive unit
Wiring Diagrams:
Electrical schematics for the installation included in the manual
Trim and Tilt:
Powered trim/tilt for running attitude and shallow-water operation
Duoprop Grip:
Counter-rotating propellers improve grip and low-speed control
Diagnostics:
Troubleshooting and fault diagnosis procedures included
Maintenance Checklists:
Provided in the manual for scheduled servicing
Gear Oil Change:
Drive unit lubricant service - refer to the manual checklist
Anode Inspection:
Corrosion protection components inspected at service intervals
Impeller Service:
Cooling system impeller service covered in the cooling section
Drive Gear Lubricant:
Volvo Penta sterndrive gear oil - refer to the manual for the specified grade
Engine Oil:
N/A - depends on the engine installed
Power Trim Fluid:
N/A - refer to the manual for the specified fluid
Known Issues and Wear Items
Gimbal Bearing:
Common wear item requiring periodic inspection and greasing
Bellows:
Drive bellows inspected for cracking and water ingress
Impeller:
Raw-water pump impeller is a routine replacement item
Propellers:
Duoprop propeller set inspected for damage and repaired as needed
Anodes:
Sacrificial anodes consumed over time and replaced
Manufacturer:
Volvo Penta
Specialisation:
Marine and industrial engines and sterndrive propulsion systems
DP-A:
Early Duoprop sterndrive variant in the DP series
DP-B:
Revised Duoprop sterndrive variant in the DP series
DP-C:
Later Duoprop sterndrive variant in the DP series
Duoprop Technology:
Dual counter-rotating propeller concept central to the DP designation
Production Location:
N/A - not specified in the supplied description
Production Years:
N/A - not specified in the supplied description
Model Awards:
N/A - not specified in the supplied description
Era Recognition:
N/A - not specified in the supplied description
Duoprop Innovation:
Counter-rotating propeller drive recognised for maneuverability and efficiency
Service Support:
Comprehensive service documentation supports long-term reliability of the DP-A, DP-B and DP-C units