Question about 1982 Honda CX 500 B

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Valve adjustment Hi Have a Honda CX500 with engine code PC001E When i turn the motor so that the TR mark shows up in inspection hole the valves are not fully closed at the right hand side cylinder . They are fully closed (rockerarm clearence) at a another place . The TL mark for the left side cylinder is matching up with rockerarm clearence . why´is that so ? Haynes manual says that TDC for the piston is at the TR mark where the valves is supposed to be fully closed . ? or ? what ? Can you please help me ? kr cn

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Hi CX'er, This is getting basic, but in a 4 stroke engine there are 2 TDC spots . One being the completion of the exhaust stroke, and the second is the completion of the compression stroke . Give her one more turn and the valves will close . I hope that you are using the 17mm port under the radiator to turn the engine . It is the same as the port you are using to view the flywheel markings . Before I begin for the first time, I re-torque the heads . You must use a torque wrench, or risk breaking a bolt ! If you do it afterwards, your valve clearance settings will change . Accuracy is very important, check for tight drag, and check with next thinner for free clearance . Too tight can burn an exhaust valve . I set them to a tight drag, about .001 under, but I verify the clearance, twice . When you do the left side, don't forget to loosen the 10mm cam chain adjusting nut one turn (in front of the flywheel view port). Listen for the little click as the tension spring snaps in to take up the slack, and tighten, that's it . Make 'em purr, J

Posted on Nov 28, 2009

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Check out www.trainwiththom.com and download the Honda service manual, Haynes has been known to print things wrong or ambiguously.

Posted on Jul 07, 2009

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