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Figure 1 Gen 2 Left Gen 1 Right MC1 Far Right Histroy of the Mercruiser Alpha Sterndrive. To change the lower unit oil in your alpha one first lower the drive.
Nm Top Cover Screws 17-23 23-31 U-joint Retainer Nut 200 271 Oil Vent Screw 30-50 34-56 Upper Drive Shaft Bearing Preload DESCRIPTION TORQUE.
Mercruiser alpha one lower unit oil type. You will need. Large Slotted Screwdriver Oil Drain Pan 1 to 2 Quarts of the proper Drive Lube The Alpha One can use either Mercruiser Premium or Mercruiser High Performance Gearlube. A Drive Lube Pump part 91-802891K2 New Drain Plug Gaskets part 12-19183–3 Clean Rags The lube is easier and faster to drain if its warmed up.
The possible reason NMMA hasnt bothered to come up with a specific marine spec for gear oil A LOT of people including a rather experienced tech that resides on this board use Mobil 1 syn 75W-90 oil. Since synthetic oil will not be thicker and MORE viscous when cold you might notice a little easier shifting when the drive is cold. Changing Mercruiser Alpha One Bravo lower Unit.
How To Change Gear Oil. The lower unit gear case oil on the Mercruiser Alpha One outdrive serves a very important function. Proper oil level and quality insures that the lower end transmission gears and shafts have enough lubrication to spin freely and smoothly with no friction.
Lower unit gear case oil also provides a cooling effect so the components do not overheat. Not sure what type of oil you need. See our Mercury Marine recommended engine oil chart Mercruiser Gas Sterndrive Inboard Oil Capacity Chart.
Mercury Racing Engine Oil Capacity. Mercruiser Diesel Engine Oil Capacity. Four Stroke Outboard Oil Capacityincl.
Small Outboard Gear Lube Capacity Chart less than 75 HP Large Outboard Sterndrive. The Alpha is the best outdrive in its power bracket period. And Im pretty sure that they improved it with the Gen 2 in many respects though I cant remember the details.
In fact I likeknow much better the Bravo but that only makes sense for big blocks. Back to your original question the weight of gear oil is 75W-90. The oil for the drive should be any good quality lower unitgear oil - typically SAE 80W90.
The motor will take regular automobile type oil - check you manual for a recommendation but 10W40 is usually a pretty safe bet. 6-12 US qt 61 L MCM 185 4 bbl 38 L. To change the lower unit oil in your alpha one first lower the drive.
Youll want a drip pan under the unit. Remove the drain plug on the bullet see photo below. Next remove the side vent plug.
See picture below Now the oil will drain into your drip pan. Allow that to drain for about 15 minutes. Video on how to change your Drive Fluid on a Mercruiser Alpha 1 Lower Unit.
The Boat is a 1998 Bayliner Capri 2050 SS with a 50 Liter V8. 1 861623A 2 PLUG ASSEMBLY Bulk Head 1 required per assembly Applications without Gear Lube Bottle 22-861623A 2 - Plug Assembly More info 940 Available to order. Usually ships within 10 days.
2 20195 1 O-RING 487 x 103 2 required per assembly. Performance Product Technologies has been leading the Marine Industry since 2002 as the go to Online supplier for Mercruiser Products including both Alpha and Bravo Sterndrives. If you dont find the technical product information youre looking for here we have a complete Technical Library that offers technical specifications for a variety of different.
2 - 6 Alpha One Generation II Sterndrive 90-806534970 1096 Drive Shaft Housing Specifications Torque Specifications NOTE. Securely tighten all fasteners not listed be-low. Nm Top Cover Screws 17-23 23-31 U-joint Retainer Nut 200 271 Oil Vent Screw 30-50 34-56 Upper Drive Shaft Bearing Preload DESCRIPTION TORQUE.
Mercury Marine the manufacturer of the 43L MerCruiser engine specifies that the owner use Mercury MerCruiser Full-Synthetic Engine Oil 20W-40 with a NMMC EC-W rating. This specific oil is recommended by the company for all MerCruiser engines including the 43L. It is available at many marine serviceparts centers.
Buy a little hand pump that fits the bottle of lube to fill the drive. Place a clean oil drain pan under the drive to catch the old lube as it drains out of the bottom of the drive. Use a large screwdriver and remove the lower drain plug.
Remove the top oil vent plug. Let the unit completely drain. Premium 2-Cycle Outboard Oil - For low-to mid-horsepower outboard engines under general marine operating conditions - Exceeds TC-W3 standards - Reduces rust and corrosion of internal components - Meets all outboard and personal watercraft manufacturers recommendations for use of TC-W2 and TC-W3 oils in pre-mix or oil-injected 2-cycle applications.
Performance Product Technologies is your one stop shop for Mercruiser Sterndrives Gear Lube Capacities and other Marine Parts Technical Articles. The link below will take you directly the the capacity chart that lists out the Mercruiser engine oil capacities for the individual Marine Engines products. Select this link to go directly to the chart for Mercruiser Engine Oil Capcities.
Purchase two quarts of lower unit oil and an oil pump that fits quart bottles. The pump will come with a hose and special fitting to attach it to the unit. Trim the unit fully down.
Two flush-mounted slotted screw caps are located on the left side of the unit. Remove the one at the top then the lower one which will allow the oil to drain out. Mercruiser Alpha One Lower UnitRead More.
Mercruiser Alpha One Water PumpRead More. Mercruiser Alpha One Bellows KitRead More. Figure 1 Gen 2 Left Gen 1 Right MC1 Far Right Histroy of the Mercruiser Alpha Sterndrive.
Beginning in 1983 Mercruiser introduced the RMRAlpha 1 series of sterndrive models. Mercruiser Alpha One oil check Leg. Ford Blue Advantage Couch 30.
If playback doesnt begin shortly. The MerCruiser power trim feature allows the operator to raise and lower the drive unit for use in and out of the water. Power trim also allows the driver to raise and lower the bow of the boat by slightly modifying the angle of propulsion.
This leveling action increases speed and performance. Power trim fluid is held. Types of Drive Lube There are two types of drive lube.
Premium and High Performance. Older drives such as the ones listed below use Mercruiser Premium Gear Lube. R MR Alpha One II IITR TR TRS All used Premium although they can also use Mercruiser High Performance Gear Lube.
The Mercruiser Premium Gear Lube looks translucent caramel in color.