Rivera Primo Brute IV Extreme for 1990-05 Dyna Models - Manual (Page 3)

Apply 3 drops of Blue threadlock to all seven mounting bolts. Install the 4 5/16 x 1.5” bolts in the front of the motorplate
first threading each bolt in until they seat equally up against the plate. Check that even contact is made front-to-back on
the motorplate rear surface. Proceed to tightening all 4 bolts equally. Now install the 3 eccentric cams into the rear of the
motorplate noting that the bottom cam is marked with a ‘B’. Align the cam holes to the threaded holes in the transmission
and then thread in the 3 5/16 x 2.250” bolts. This is what the mounted motor plate will look like to this point. Install oil filter
nipple if center-mount oil filter is being used.
STEP 8
Install the starter motor using the two 5/16-18 x 3-3/4” socket head cap screws.Place the starter to
the rear of the trans flange and slide the bolts through to the threads in the motor plate.
STEP 6
Now it’s time to install the motor plate on the bike. Position
the motorplate plate over the Sprocket shaft and trans M/S
making sure that the shifter shaft is centered in the shaft
support and push forward until the motorplate is tight
against the motorcase spacer and the transmission. Make
certain all mounting holes are properly aligned.
B
Note: The eccentric cams are
used on this belt drive because
the bolt pattern on the 1990-2000
Dyna® models is different from
the 2001-2005 Dyna® models.
STEP 7 Install the eccentric cams in the motorplate.
STEP 5
The stock OE shifter shaft used a wave
washer to spring load the shaft. We use the
same method, however our wave washer is
larger.
You should now remove the OE washer
and install our wave washer onto the
shifter shaft.