Question about 2005 Suzuki RM-Z 250
2006 rmz250 When I torgue the cam bearing journals on the exhaust cam the cam turns very hard. The intake cam tightens just fine. The previous owner said it was running when he tore it down. Any suggestions Thank You
Are you CERTAIN the two cams have not been switched? Chances are there will be the letter "E" on the side of the exhaust cam gear and/or an "I" on the intake cam. The diagram below is for a WR250. I don't have a manual for an rmz250. Your cams are probably the same. Note that the caps should tighten to only 7.2 Ft lbs. (10nm / 1.0 m-kg ). Many other things could be wrong. Was the cam assembly removed incorrectly? Doing it incorrectly can damage the cam, cam caps and cylinder head. Is the cam runout out of specifications ( .0012 )? Are you using a standard torque pattern? ( Cris-cross from inside to outside ) for installing. The reverse when dis-assembling. It may be best to let the shop figure out the problem and do the repair on this one.
Posted on Feb 19, 2010
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Posted on Jan 02, 2017
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