Mercruiser Alpha One & Two Sterndrives Technical Specifications
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| Maximum Power Capacity | 300 HP (230 kW) |
|---|---|
| Lower Unit Design | Low-Drag Hydrodynamic Torpedo |
| Maximum Propeller Diameter | 15″ |
| Water Inlet Location | Strut |
| Clutch Type | Compact Dog Clutch with F-N-R |
| Available Gear Ratios | 1.47, 1.62, 1.81, 2.00, 2.40:1 |
| Counter-Rotation | Optional, Except 2.40:1 Ratio |
| Upper Unit Gear Set | Precision Shimmed, Spiral Bevel Gear |
| Lower Unit Gear Set | Precision Shimmed, Spiral Bevel Gear |
| Propshaft Material | Heat-Treated Stainless Steel |
| Standard Exhaust Outlet | Through Propeller |
| Propeller Hub Type | Flo-Torq II Hub |
| Recommended Lubricant | Mercury High-Performance Gear Lube |
| Monitoring System | Engine-Mounted Lube Monitor w/Audio Warning or Engine Guardian® |
| Corrosion Warranty | 3-Year, Limited |
| Housing Construction | Corrosion Resistant XK 360 Aluminum Low-Copper Alloy |
| Corrosion Protection | Tri-Paint, Anodes & MerCathode® as a Kit |
| Anode Type | Ultra-Pure Aluminum Anodes or Magnesium Anode Kit |
| Speedometer Pick-up | Integrated Into Lower Housing |
| Steering System | Single Cylinder Power Steering with Anti-Feedback |
| Steering Range | 56° Range Stop to Stop |
| U-Joint Type | Permalube® Virtually Maintenance-Free |
| Power Trim System | Twin-Cylinder Hydraulic Featuring Power Trim XD® Kick-up Return |
| Typical Trim Range | 5° to 15° |
| Trim Limit Switch | Standard – Adjustable |
| Trailer Limit | 53° |
| Trim Hinge Pin Design | Permanently Lubricated – No Maintenance Required |
| Hydraulic Trim Lines | Stainless Steel Braided Armor |
| Drive Coupler | Greaseable From Inside Boat |
| Drive Weight | 85 lbs. (38 kg) |