Buell 2007 FIREBOLT Service Manual page 540

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Main Drive Gear Seal
1. See Figure 6-78. From outside of crankcase, install
PILOT (Part No. HD-47856-2) over end of main drive
gear bearing inner race.
2. Coat lips of new main drive gear seal with GENUINE
HARLEY-DAVIDSON
AND PRIMARY CHAINCASE LUBRICANT.
NOTE
Adapter (Part No. HD-47856-4) and main drive gear have left-
hand threads.
12040
Figure 6-78. Install Pilot (Part No. HD-47856-2) (Typical)
12041
Figure 6-79. Install Main Drive Gear Seal (Typical)
3. See Figure 6-79. Place seal over pilot and position seal
squarely in end of crankcase bore.
FORMULA+ TRANSMISSION
12042
Figure 6-80. Install Adapter (Part No. HD-47856-4)
(Typical)
4. See Figure 6-80. Thread ADAPTER (Part No. HD-47856-
4) onto end of main drive gear several turns. Do NOT
tighten. Doing so could make it difficult to remove
adapter after seal has been installed.
12043
Figure 6-81. Place Installer (Part No. HD-47856-1)
over Adapter (Typical)
5. See Figure 6-81. Slide INSTALLER (Part No. HD-47856-
1) over adapter until cupped end of installer is flat against
seal.
2007 Buell Firebolt: Drive/Transmission 6-43