SeaStar Pro Outboard

INTRODUCTION
SeaStar PRO Outboard Steering systems are suited for all those critical high speed, single powered outboard boats, like Bass, Flats, combo Race/Ski and other performance orientated boats capable of speeds in excess of 65mph. Before ordering it is necessary to determine the proper cylinder and helm pump for your application. See application guide below. All SeaStar PRO systems require the use of a SeaStar PRO helm and SeaStar PRO (1500psi) reinforced Kevlar hoses ONLY!

Applications
Seastar Pro is for high-performance boats with single non-power-assisted outboards up to 300 HP, especially those capable of speeds over 65 MPH, which demand maximum steering control and comfort. It is suitable for use with high-performance propellors and jack plates.

Features
• Patented steering lock valves.
• Low friction hydraulic steering system.
• 4.25 turns from lock-to-lock.
• Compact helm has only a 4-7/16” footprint — needs only 3” dash hole (Tilt requires larger hole).
• Optional PRO Cylinders with longer shaft bushings and larger pivot bushings for an even more solid feel!
• Factory swaged hoses are Kevlar® reinforced.
• Packaged complete with helm, cylinder, fittings, oil, bleeder kit and detailed instructions.
• Standard 3/4” tapered steering shaft.
• Fast, easy installation.
• Meets A.B.Y.C. standards.
• Meets N.M.M.A. certification requirements.

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Selection Guide
Application Guide
Order Guide
Helm Pumps
SeaStar Pro Lock Valve System

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SELECTION GUIDE

DESCRIPTION PART NO.
COMPLETE SYSTEMS
SeaStar PRO Steering Kit (with Hoses) HK73XXA
SeaStar PRO Steering Kit (no Hoses) HK7400A
COMPONENTS
SeaStar PRO 2.0 – Front Mount Helm HH5770
SeaStar PRO Hose Kit (2 hoses) HO57_ _
Pivot Mount Cylinder HC5345
SeaStar Oil (1 Quart) HA5430 (x2)
OPTIONS
SeaStar PRO 1.7 – Front Mount Helm HH5779
SeaStar PRO 2.0 – Sport Tilt Helm HH6190
SeaStar PRO 2.0 – Classic Tilt Helm HH6574
SeaStar PRO 2.4 – Front Mount HH5772
Power Assist, 15′ Harness PA1200-2
Pivot Mount Cylinder (Silver) HC53_ _SIL
Pivot Mt. Cylinder — PRO (Red) HC6345RED
SeaStar Round Bezel Kit HA5478
SeaStar Backplate Kit HA5418
SeaStar 20° Dash Wedge Kit HA5419
PRO Bulkhead Hose Kit (2 hoses) HO82_ _
SERVICE ITEMS
SeaStar Oil (1 Gallon) HA5440
Helm Service Kit, Comes with wheel shaft nut, key, shaft seal & seal plate HP6032

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APPLICATION GUIDE

ENGINE MAKER / BRAND YEAR MODEL CYLINDER PART NO. NOTES
Force 1985-Date 90-150hp HC5345
Honda 1996-Date 150-300hp HC5345
Johnson / Evinrude 1977-1990 150-300hp N/A Contact SeaStar Solutions®
2002-Date 150-250hp 4-Stroke HC5345
2003-Date 150-300hp Etech HC5345
2005-Date E250hp Vindicator N/A Contact SeaStar Solutions®
Mercury / Mariner and XS Engines 1989-Date 150-300hp 2-Stroke, 4-Stroke and XS Engines HC5345 XS Engine Requires Mercury Supplied Tiller Bolt On Install
Suzuki 1986-Date 150-250hp 2-Stroke, 4-Stroke HC5345
Yamaha 1986-Date 150-250hp 2-Stroke, 4-Stroke HC5345
2002-Date 300hpdi HC5358

Notice
SeaStar PRO Steering Systems can not be used with an unbalanced steering cylinder.

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ORDER GUIDE

ENGINE / CYLINDER CONFIGURATION DESCRIPTION QTY. REQ. MODEL PART NO.
Single Engine
(Single Cylinder)
Applications Up To 300hp Max
Number Of Turns: 4.25
Cylinder (See Application Guide) 1 Pivot Front Mount HC_3__
Helm 1 SeaStar Pro HH5770
Hose Kit 1 SeaStar Pro Hose HO57__
Oil 3 SeaStar Oil (QT.) HA5430
Optional Equipment Back Plate Kit (Front Mount Helms) HA5418
20 Degree Wedge (Front Mount Helms) HA5419
Sport Tilt Helm SeaStar Pro HA6190
Classic Tilt Helm SeaStar Pro HA6574
Bulkhead Hose Kit SeaStar Pro Hose HO82__
Silver Cylinders HC53__SIL
Pro Cylinders (available in red, silver or traditional black) HC63__
Power Assist Pro Steering PA1315-2

Notes
• Do NOT use with unbalanced cylinder.
• SeaStar PRO is for single engine applications only.
• The recommendations shown above apply to factory stock outboards only. Modified installations may require a higher capacity steering system. (Cylinder volume / helm displacement = number of turns.) If in doubt, contact SeaStar Solutions® Canada technical service for assistance.
• Some applications vary from what is depicted in this catalog. Always consult SeaStar manual for diagrams specific to your application.
• Interference between the cylinder and boat can occur under certain conditions. Check installation thoroughly throughout the full range of movement for engine tilt and trim (and jack plate, if present).
• For all Seastar PRO outboard systems: use only SeaStar PRO Hose Kit Part No. HO57_ _ or HO82_ _, where last two digits equal length in feet.

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HELM PUMPS

SeaStar PRO Steering systems have the option to install a standard front mounting helm, both traditional and sport tilt as well as rear mount helm pumps. Please refer to page 9-1 for style and page 9-5 for PRO Helm part numbers.

CAUTION
SeaStar PRO Helms require the use of SeaStar PRO (1500 psi) Kevlar steering hoses

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SEASTAR PRO LOCK VALVE SYSTEM

SeaStar PRO’s unique valve system keeps pressures in the two hydraulic lines about equal, so the wheel feels solid and sure at all times.

SeaStar PRO is the only hydraulic steering system uniquely designed to give you maximum steering comfort and control of your high-performance bass boat.

SeaStar PRO has been installed on premium bass boats as original equipment for many years. It’s the ideal upgrade for twin-cable mechanical steering.

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