Belt Drives 1936-80 - Manual

INSTALLATION FOR 8mm AND 11mm 4 AND 5 SPEED
DRIVES USING STOCK HD CLUTCH HUB AND CLUTCH
CLOSED PRIMARY AND 2in AND 3in OPEN DRIVES
1936-80 MODELS
Be sure to read the Warranty, Introduction, belt tracking and starter gear problems, alignment
procedur e and disconnect battery.
CLOSED PRIMARY INSTALLATION:
1. Remove existing drive and inner primary per HD manual.
2. Relieve any casted bosses, ribs or areas that may come in contact with the front or rear
pulleys on both inner and/or outer primary covers.
3. Check engine seal for oil leaks and replace if necessary.
4. Make sure motor and transmission shafts are square and parallel with each other.
5. On earlier models shut off primary chain oiler screw. On later models remove primary
chain oil supply lines/vents and cap off fittings. NOTE: See OEM service manual for
proper vents/lines.
6. Install rear pulley with belt on clutch hub and install on transmission shaft, (refer to HD
manual). Install front pulley on engine shaft using belt guides supplied, spacing of the
front pulley may be necessary for proper alignment.
7. Rotate motor by hand using a socket wrench, the belt should track straight and away
from the motor.
8. For 11mm drives with idler, install plate and idler on existing serrated plate with idler
under belt, proper tension of belt is 1/2" total up and down on top of belt and 1/4" on
each side of idler.
9. Install clutch pack. (Refer to HD manual).
10. Install outer primary cover WITH gasket, tighten all bolts to HD specifications.