How to install mercruiser alpha one lower unit

Because it's a simple job and can be done quickly, some people remove their units when they put their boats in storage to prevent thieves from stripping the outdrives when the storage area is a less-than-perfectly secure location.

Rotate the screwdriver to begin prying the E-clip loose. If it's too tight to remove by hand, put a punch on the end of the shaft and tap firmly enough to push it free. Pull the cylinders upward as far as possible, securing the opposite end of the rope on or inside the boat, holding the cylinders up out of the way.

Please contact us with this information after you place your order otherwise processing will be delayed. Refer to Sterndrive Engineering's model chart below to find your proper Mercruiser Sterndrive Replacement. These are typical applications; it is best to confirm your ratio by couting the teeth in the upper.

Although great care was taken in the creation of this guide, its accuracy cannot be guaranteed. Mounting gaskets and hardware not Please verify your serial number to be sure Sterndrive Engineering Repl Lower Unit Mercruiser Bravo One It can be modified to back fit - has a side water pick up has a side and low water pick up Item is Kit Contains: 1 Shift Cable Guide 1 For Alpha One Sterndrive Engineering Mercury Outboard 3.

Forums New posts Search forums. What's new New posts New media New resources Latest activity. Media New media New comments Search media. Resources Latest reviews Search resources. Members Current visitors. Log in Register. Search titles only. Search Advanced search…. New posts. Search forums. Log in. Install the app. The gears are spaced apart with the use of shims behind the bearing races. Precise measurements must be taken to insure exact clearances and one small error can destroy a new gearset.

We suggest that you purchase a Service Manual before attempting such a repair. Even our most experienced Merc techs still refer to the manual when building a drive. Be Organized There are a lot of internal parts in an Alpha lower. Roller bearings, shims, seals, washers, gears and shafts must all be kept in neat order as so you can keep track of the procedures that you are doing.

Use a good size work bench with large trays to place your parts in. It's good to have a "dirty parts" tray and a "clean parts" tray. The work space needs to have a large vise, a stand to place the drive in, a hydraulic press and a parts washer. It must be well lit and we recommend a good compressor with an air gun and air tools. Have all debris removed from the benches and floors.