Sterndrive Steering

Applications
• Fits most power and non-power assist sterndrives.
• Single and multiple drives.

Features
• Easy installation.
• Simple autopilot interface.
• Simple multiple steering connection.

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How to Select a Sterndrive Steering System
Order Guide
Application Guide
Performance I/O and Outboard Cylinders

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HOW TO SELECT A STERNDRIVE STEERING SYSTEM

1. From the order guide select the drive configuration based on the number of drives.
2. From the application guide confirm that a cylinder is available for your specific make, model and year of drive unit. Select the cylinder that is appropriate for the drive.
3. From the order guide select the appropriate helm and accessory hardware. Note that two helm pumps of different displacements are available for power steered sterndrives. The displacement of the helm affects the number of turns lock to lock. Select the helm displacement on the basis of the desired steering response.
4. Select the appropriate tube or hose and fitting kits.
5. Confirm that sufficient space is available in the dash and engine compartments for the equipment.

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ORDER GUIDE

SYSTEM CONFIGURATION DESCRIPTION QTY. REQ. MODEL PART NO.
SINGLE & DUAL STERNDRIVES
(For dual sterndrive applications use engine manufactures supplied tie bar.)
Cylinder 1 See Application Guide
Helm 1 SeaStar I–Standard * (See Note 1) HH5271
1 SeaStar II–Standard ** (See Note 2) HH5272
Tube / Hose (See Note 3)
Oil 3 SeaStar Oil HA5430
For Extra Steering Station Add:
Helm 1 SeaStar I–Standard * (See Note 1) HH5271
SeaStar II–Standard ** (See Note 2) HH5272
Fitting Kit 1 Add a Station
–for SeaStar I helms HH5502
–for SeaStar I helms HH5501
Tube / Hose (See Note 3)
Oil 1 SeaStar Oil
OPTIONAL EQUIPMENT Back Plate Kit (for use with Standard Helms) HA5418
20 Degree Wedge (for use with Standard Helms) HA5419
Autopilot Fitting Kit (for use with all Helms) HF5502
Power Assist Steering PA1200-2
* All Helm Designs Can Be Used
* Tilt Helm-SeaStar I HH5741
* Sport Tilt Helm-SeaStar I HH5291
* Rear Mount Helm-SeaStar I HH5261
** Tilt Helm-SeaStar II HH5742
** Sport Tilt Helm-SeaStar II HH5292
** Rear Mount Helm-SeaStar II HH5262

1. SeaStar helms are the standard recommendation for both non-power and power steered applications.
2. SeaStar helms can be specified for power steered applications where faster steering response is desired. Review the application guide for recommendations.
3. * For SeaStar systems: use 3/8″ dia nylon tubing ref part No. HT5_ _
* For SeaStar systems: Use the following option A or B
A) Outboard hose: Hoses must be ordered in standard lengths. They cannot be cut to length.
B) Copper tube: 3/8″ diameter copper tube and hose kit part No. HF5508
4. For dual stern drives – use the tie bar supplied by the engine manufacturer.

Notice
These recommendations apply to factory stock stern drives only.
Modified installations may require a higher capacity steering system. If in doubt, contact our technical service for assistance.

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APPLICATION GUIDE

ENGINE MANUFACTURER STEERING CONFIG. ENGINE / DRIVE DESCRIPTION YEAR CYLINDER DESCRIPTION NUMBER OF TURNS LOCK TO LOCK NOTE
MODEL NO. PART NO. SSTAR I HELM SSTAR II HELM
BMW Non Power Assist All To Date BA125-8EMV HC5330-3 4.9 N/A 1
Power Assist All To Date 125-8EM HC5328-3 4.9/5.8 3.4/4.1 2
MERCRUISER Non Power Assist Mercruiser I 1983 & Prior BA125-8EMV HC5330-3 4.9 N/A 1,7
Alpha I 1984 to Date BA135-7EM HC5332-3 5.0 3.5 1,5,6,7
Bravo I 1984 to Date BA135-7EM HC5332-3 5.0 3.5 1,5,6,7
Bravo II 1984 to Date BA135-7EM HC5332-3 5.0 3.5 1,5,6,7
Bravo III 1984 to Date BA135-7EM HC5332-3 5.0 3.5 1,5,6,7
Power Assist Mercruiser I 1983 & Prior 125-8EM HC5328-3 4.9/5.8 3.4/4.1 2
Alpha I 1984 to Date 125-8EM HC5328-3 4.9/5.8 3.4/4.1 2
Bravo I 1984 to Date 125-8EM HC5328-3 4.9/5.8 3.4/4.1 2
Bravo II 1984 to Date 125-8EM HC5328-3 4.9/5.8 3.4/4.1 2
Bravo III 1984 to Date 125-8EM HC5328-3 4.9/5.8 3.4/4.1 2,8
OMC Non Power Assist 400/800 Series 1985 & Prior N/A N/A N/A N/A
Cobra 1986 to Date BA150-7EM HC5326-3 6.0 N/A 1,4
King Cobra 1986 to Date BA150-7EM HC5326-3 6.0 N/A 1,4
Power Assist 400/800 Series 1985 & Prior N/A N/A N/A N/A
Cobra 1986 to Date 125-8EM HC5328-3 4.9/5.8 3.4/4.1 2
King Cobra 1986 to Date 125-8EM HC5328-3 4.9/5.8 3.4/4.1 2
VOLVO Non Power Assist 275 To Date BA150-7ATM HC5314-3 6.0 N/A 1,7
280 To Date BA135-7EM HC5332-3 5.0 3.5 1,5,6,7
290 To Date BA135-7EM HC5332-3 5.0 3.5 1,5,6,7
Diesel To Date BA135-7EM HC5332-3 5.0 3.5 1,5,6,7
Power Assist 275 To Date N/A N/A N/A N/A
280 To Date 125-8EM HC5328-3 4.9/5.8 3.4/4.1 2
290 To Date 125-8EM HC5328-3 4.9/5.8 3.4/4.1 2
Diesel To Date 125-8VEM HC5329-3 4.9/5.8 3.4/4.1 2
32, Diesel 1997 to Date 92-VPS HC5331-3 4.9/5.8 3.4/4.1 2
41-42, Diesel 1992 to Date 92-VPS HC5331-3 4.9/5.8 3.4/4.1 2
DPS and SX 1996 to Date 92-VPS HC5331-3 4.9/5.8 3.4/4.1 2
YANMAR Non Power Assist All 1989 to Date N/A N/A N/A N/A
Power Assist All 1989 to Date 125-8EM HC5328 4.9/5.8 3.4/4.1 2

Notes
1. Balanced system – ie: the number of turns lock to lock is equal port to starboard or vice-versa.
2. Unbalanced system – ie: the number of turns lock to lock is not equal port to starboard or vice-versa.
3. Requires additional clevis supplied by engine manufacturer. Reference Quicksilver part No. B98735A1.
4. Requires cylinder rod end adapter HA5424 supplied by SeaStar Solutions® Canada Limited Partnership.
5. HC5332 replaces HC5326 as of January 2000. If installing HC5326 additional clevis supplied by engine manufacturer required (part number B98735A1).
6. The installation of the HC5332 sterndrive cylinder requires the use of SeaStar Outboard hose only. Do not use 3/8″ copper or nylon tube.
7. If engine outdrive is NOT equipped with a torque tab on the underside of the lower leg one must be installed to reduce prop torque.
8. Yanmar Engines using the Bravo III drives require the use of cylinder HC5326-3.

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PERFORMANCE I/O AND OUTBOARD CYLINDERS

The K-5-B cylinder was designed for inboard/outboard boats requiring external cylinders of substantial size and strength. The K-5 cylinders are nickel plated for aesthetics and protection against the elements. This cylinder does not include the wing plates or hardware required for mounting to the outdrive. Porting is through two through-transom 1/4″ NPT ports located at the mounting end of the cylinder.

Notice
K-5-B steering cylinders have a large volume. To keep total wheel turns at a reasonable amount, it is recommended to use a larger displacement helm pump, such as Capilano HH5275 (5.4 cu.in. displacement MAX).

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