TDC Question

Turn the engine over by slowly pulling on the pull starter while watching the intake valve ..When the intake valve opens and starts to close watch for the index mark on the flywheel ..when you see the index "T" mark thru the inspection hole it should be at TDC ..

Thanks for the reply Honda mechanic. I know just enough to be dangerous ( ! ) but I want to be sure. Can you identity which valve is the intake valve (front or rear?)

Thanks again!

The rear valve is intake .. it is closest to the carb .. the valve closest to the front of the bike next to the exhaust header is the exhaust ..

QUOTE ("Honda Mechanic":4ttgszqt)

Turn the engine over by slowly pulling on the pull starter while watching the intake valve ..When the intake valve opens and starts to close watch for the index mark on the flywheel ..when you see the index "T" mark thru the inspection hole it should be at TDC ..

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I plan on adjusting the valves on my 500 myslef. I am wondering what will happen if it takes multiple attempts to find the TDC? Will it flood the carb?

Manually turning the motor over will not flood the carb. You will have the fuel tank off anyway. (Although you do not have to disconnect the lines you should shut the fuel off.)

I adjusted the valves on my 500 at 25 hours and they were tight also.I couldn't get a .004" in there.I set them to the recommended .006" and ran it for a while and it was too noisey.I re-adjusted them to a snug .005".Here's a question for HONDAMECHANIC:Have you run into this before;Tight valve adjustment from the factory or does the valve seat-in that much during break-in causing tight valve lash?