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OPERATOR'S MANUAL
AQ205, AQ211, AQ231, AQ271, AQ311
BB231, BB261

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Summarization of Contents

Instrument Panel Overview
Tachometer
Instrument displaying engine revolutions per minute (RPM).
Temperature Gauge
Monitors the engine's cooling water temperature.
Oil Pressure Gauge
Indicates the engine's oil pressure.
Voltmeter
Measures the electrical system's voltage.
Key-switch
Ignition switch for starting and stopping the engine.
Sterndrive Operating Switch
Controls the sterndrive's "Up" and "Down" positions.
Trim Angle Instrument
Indicates the trim angle of the sterndrive.
Operating Controls
Power Trim Switch
Switch for operating the Power Trim system.
Control Lever Functions
Details on control lever positions for neutral, forward, and reverse.
Disengaging Device
Procedure for disengaging throttle from shift mechanism.
Important Safety and Operational Notes
General Safety Precautions
General safety advice, fire risks, and fuel handling.
Cooling System Frost Protection
Procedures for draining the cooling system to prevent freezing.
Introduction and Warnings
Volvo Penta Service Information
Information regarding Volvo Penta's service network and requirements.
Warning Symbols Explained
Explanation of warning symbols used in the manual and on the product.
General Engine Information
Fuel Requirements
Guidelines on fuel type, octane rating, and additives.
Running Instructions and Controls
Control Lever Operation
Details on control lever positions for neutral, forward, and reverse.
Engine Start and Checks
Steps for starting engine and post-start instrument checks.
Engine Warm-up and Idling
Running the engine at fast idle until normal operating temperature.
Operating Guidelines and Trim
Advice on operating economy and adjusting drive trim.
Engine Shutdown Procedure
Idling, Stopping, and Drive Tilt
Procedure for idling, stopping the engine, and tilting the drive.
Main Switch Operation Warning
Caution against switching off the main switch before engine stops.
Daily Pre-Start Checks
Engine Oil Level Check
Daily check of the engine oil level.
14-Day Checks
Outboard Drive Oil Level Check
Checking the oil level in the outboard drive every 14 days.
Fluid Level Checks
Gearbox and Hydraulic Oil Levels
Checking oil levels in gearbox, power trim, and steering systems.
Battery and Belt Maintenance
Battery Electrolyte and Belt Tension
Checking battery electrolyte level and belt tension.
Corrosion Protection Checks
Zinc Ring and Plate Replacement
Procedure for replacing zinc rings and plates for corrosion protection.
50-Hour Service Intervals
Engine Oil, Filter, Valve Clearance, and Shaft Lubrication
Routine service tasks for 50-hour intervals.
Spark Plug Maintenance
Checking and adjusting spark plugs.
100-Hour Service Intervals
Oil Filter Replacement
Procedure for changing the oil filter.
Drive and Gearbox Oil Changes
Drive Oil Draining and Refilling
Procedures for changing drive oil every 200 hours.
MS4A Reverse Gear Oil Change
Procedure for changing oil in the MS4A reverse gear.
General Checks and Service Procedures
Carburetor Adjustments and Filters
Carburetor adjustment importance and filter checks.
Cooling System Checks
Monitoring the cooling system for proper operation.
Electrical System Guidelines
Main Switch, Battery Safety, and Charging
Guidelines for main switch, battery safety, and charging circuits.
Fuse Reset Procedure
Information on the automatic fuse and its reset button.
Laying Up and Launching Service
Engine Inhibiting Procedures
Procedures for engine inhibiting during periods of non-use.
Drive and Gearbox Oil Changes
Drive Oil Draining and Refilling
Procedures for changing drive oil every 200 hours.
MS4A Reverse Gear Oil Change
Procedure for changing oil in the MS4A reverse gear.
Propeller Service Procedures
SP and DP Propeller Service
Procedures for servicing SP and DP propellers.
Technical Data - General
General Specifications
Engine specifications including bore, stroke, and compression.
Valve System
Details about the engine's valve system.
Cooling System
Information on thermostat limit values for cooling.
Fuel System
Specifications for fuel quality requirements.
Lubricating System
Details on engine oil quality and capacity.
Technical Data - Sterndrive and Systems
Sterndrive SP Specifications
Oil quality, viscosity, and capacity for SP sterndrives.
Sterndrive DP Specifications
Oil quality, viscosity, and capacity for DP sterndrives.
Power Trim and Steering Systems
Capacity and quality specifications for hydraulic systems.
Reverse Gear MS4A Data
Oil volume and quality for the MS4A reverse gear.
Ignition and Electrical System Data
Technical data for ignition and electrical system components.
Tightening Torque Values
Specification of torque values for engine bolts.
Engine Component Guide
AQ205A Component Identification
Illustrated guide identifying components of the AQ205A engine.

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