S&S Cycle Billet Primary Cover for 1989-06 Harley-Davidson Softail and 1991-05 Dyna Models with Forward and Mid Controls User Manual

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56-4041, 56-4042 Fit 89-06 Harley-Davidson® Softail® models and 91-05 Dyna® models with forward controls.
56-4050, 56-4051 Fit 89-06 Softail models and 91-05 Dyna models with mid controls.

This kit was designed to allow the output, inspection and derby covers to be removed without the need of changing seals. Care should be taken
when installing o-rings into ring groves, damaged o-rings will cause fluid leaks.

Race and Street Derby covers are interchangeable. The Race Derby cover was designed for larger lock-up race clutches and is offset further from the
engine; this takes away ground clearance in cornering. The street version will fit stock, S&S and most aftermarket stock replacement clutches.

Study the procedures listed in these instructions and the appropriate Service Manual. This kit should be professionally installed by a certified
motorcycle mechanic. Failure to install this kit properly could result in death or serious injury.

NOTE: On bikes equipped with floorboards. It may be necessary to loosen the floorboard mounts to install the cover. On some mid-control models foot-
pegs may need to be removed.

Models with forward controls
1- Disconnect the battery cables to prevent accidental start up, see your service manual for location and procedure.
2- Remove the stock primary cover following the factory service manual. Note: inspection cover must be removed before the outer primary

cover can be removed.

3- Clean the gasket surface on inner primary case to insure a proper seal. See Picture 1.

4- Select the correct starter pinion bushing provided in the kit, per year model and press the bushing into the outer primary cover so it is flush

with inside of the cover. (See Pictures 2 and 3). 1993 and earlier models use the bushing with large inner diameter (50-0422). 1994 and later
models use the smaller inner diameter bushing (50-0421).

Mounted flush