2005 trail boss 330
2005 trail boss 330
Feb 25, 2014 | 06:17 PM
#2
Polaris ATV Expert
Retired and loving it!
Retired and loving it!
Joined: Jun 2008
Posts: 24,350
Likes: 44
From: North Texas
Welcome to the forum. Knock isn't normal. Could be piston or rod slap or even could be worn clutch buttons in the drive clutch that can make noise and gets quieter as the engine revs. Mechanics stethoscope or just put your ear to the clutch cover and cylinder to try to isolate the noise.
Feb 26, 2014 | 03:00 PM
#5
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Weekend Warrior
Joined: Feb 2013
Posts: 4
Likes: 0
Welcome to the forum. Knock isn't normal. Could be piston or rod slap or even could be worn clutch buttons in the drive clutch that can make noise and gets quieter as the engine revs. Mechanics stethoscope or just put your ear to the clutch cover and cylinder to try to isolate the noise.
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