Propellers

Your Volvo Penta sterndrive should be equipped with propeller(s) that are designed to give top performance and maximum economy under all operation conditions. To obtain peak performance, the engine RPM AT FULL THROTTLE must fall in the specified operating range at normal load conditions at favourable/best trim settings. If full throttle RPM is below the recommended operating range, propeller(s) with less pitch should be used. Should full throttle RPM exceed the recommended range, install propeller(s) of higher pitch. Selecting the correct propeller(s) to allow the engine to run at full throttle in the recommended operating range will give the best engine life, fuel economy and performance. See your Volvo Penta dealer for help in determining the correct propeller(s) for your application.

IMPORTANT! Engine damage can result from incorrect propeller selection. A damaged propeller must be changed without delay. Operate with extreme caution if a propeller is damaged. Do not operate DP models with only one propeller, this can cause damage to propeller shafts.

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Propeller selection, SX drive

When you choose a propeller, it is important to know whether it should be for right-hand or left-hand rotation. The directions of rotation are shown in the illustration. Boat yards normally use right-hand rotation, and have set the trim fin for right-hand rotation.

For trim fin adjustment, please refer to the SX, DP-S Drive, Trim fin, adjustment section.

IMPORTANT! In twin installations, one propeller should be for right-hand rotation and the other one should be for left-hand rotation. Both should be of the same size (same diameter) and have the same pitch.

Propeller check, SX drive

After having the propellers serviced, shift into FORWARD or REVERSE at idle speed and determine if the boat moves in the direction indicated by the position of the control handle. If the boat moves opposite the direction indicated by control handle, the propellers are switched.

WARNING! Failure to perform the above test could result in loss of control.

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A B

B

A Propeller selection, DP-S drive

Propellers for the DP-S drive are classified together and are marked with a type designation (size code for size and pitch). D0-D7 for aluminum propellers and F4-F9 for stainless propellers.

IMPORTANT! The propellers on a DP-S drive must have the same designation, i.e. the same diameter and pitch. The part numbers differ, however, since one propeller is for left-hand rotation and the other one is for right-hand rotation. In twin installations, both drives must have propellers with the same type designation.

IMPORTANT! D-series aluminium propeller sets used on Duo Prop applications, are not recommended for use on boat and engine combinations that are capable of speeds in excess of 35 knots. E-series stainless steel propeller sets should be used in these applications.

Propeller identification, DP-S drive

The type designation (A) and the FRONT and REAR identification (B) are stamped on the end of the propeller hubs. When replacement of the propeller is required, either a forward or rear propeller can be purchased to maintain the matched set. Always order replacement propellers by the part number.

Propeller care

A damaged or unbalanced propeller will cause excessive vibration and a loss of boat speed. Under these conditions stop the engine and check the propeller for damage. If the propeller appears damaged, have it checked by your local Volvo Penta dealer. Always carry a spare propeller and replace the damaged propeller as soon as possible.

NOTE! Never continuously run with a damaged propeller. Running with a damaged propeller can result in drive unit and engine damage.