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techtalk:evo:priclutch02 [2019/11/14 00:02]
hippysmack [Removing the Primary Drive]
techtalk:evo:priclutch02 [2020/07/07 23:07]
ixl2relax [Primary Cover Differences]
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 +
 +====== Primary Cover Differences ======
 +
 +The 1986-1990 cover uses a round, screw-in, primary chain inspection cover with a 'chevy symbol'​ indentation to unscrew it.\\
 +It also used a relatively small, round, screw-in clutch adjustment cover, which also used the 'chevy symbol'​ tool.
 +
 +On the 1991-1993 cover, the primary chain inspection cover is also round, but is mounted with two screws.\\
 +Likewise, the small clutch adjustment cover is round and mounted by two screws.
 +
 +On the 1994-2003 cover, the primary chain inspection cover is still round using two screws to mount it.\\
 +But, the clutch adjustment cover is the large Derby Cover (4-bolt) that allowed the Ball&​Ramp assembly to be removed without removing the cover.
 +
 +With the Rubbermount models, starting in 2004-later, the cover has a rectangular primary chain inspection cover, held in place by two screws.\\
 +The clutch adjustment cover is the large Derby Cover, but it is mounted with 6 bolts.
 +(The 2004-05 polished covers have the same part number, 25430-04, but the 2006-later engines use part number 25430-06.)
 +
 +Over the years, the primary cover has been available in different finishes (polished Aluminum, rough Aluminum, Chrome, Black, etc.) with different part numbers for those variations.
 +
 +
 +\\
  
 ====== Primary Chain - Manual Tension Adjustment ====== ====== Primary Chain - Manual Tension Adjustment ======