NEED HELP WITH SETTING TIMING ON A REBUILD...

HEY YALL WAS WONDERING IF I CAN GET SOME TYPE OF ADVICE AS OR HELP CONCERNING THE TIMING ON A 87' HONDA 250X, 2 WHEEL DRIVE FOURSTROKE ,I'M HELPING A BUDDY OUT WITH IT AND WAS PREVIOUSLY JUST PURCHASED BY HIM,WE HAD TO REBUILD THE HEAD AND NOT SURE HOW THE TIMING WORKS ON THESE BIKES ANY HELP WOULD BE GREATLY APPRECIATED,GOD BLESS

Step 1. Take off the caps on the freewheel side. There should be a middle one and one up to the left side of the cover. Take them out.

Step 2. Take your valve cover off so you can see your cam.

Step 3. Put a socket wrench in the middle screw hole you took out in step 1. There should be a bolt in there and when you turn it, it turns your engine.

Step 4. Turn the wrench and look though the screw hole on the upper left corner. Keep turning it till you see three marks on the freewheel. On the threads of the hole you�re looking though there is a slit in the threads. You want to line the middle mark of the the line that is on the thread of the screw hole you are looking though. It will be tricky to keep it there so get someone to help you hold the socket wrench. When you get the marks there that is Top Dead Center.

Step 5. Look at your cam sprocket. Look at the side that faces on the inside. There should be two marks on the opposite sides of each other. You know that the timing is correct when those two marks are even on the top of your engine (where the valve cover sits on). If those two marks are not even with the top of the engine head that means your timing is off.

Step 6. If your timing is off you will need to loosen your timing chain tensinor (sp) so that you can move the timing chain off the cam sprocket and move the cam so those two marks at even with the engine head. Put the chain back on it. Now look to see if those marks as in step 4 are lined up. If they are tighten your tensior for the cam chain. Check you chain to make sure that it isnt going to come off your cam sprocket or skip teeth.

Step 7. Put your valve cover back on and put the screws back in the the cover. Put your quad back together and and start her up.

Further to bamajeepjunkie's reply, how do I adjust the cam chain on a 250X?

I have my own '87 Honda 250X that's making some noise in the head that sounds like a cam chain thats a bit loose. It does have a manual cam chain adjuster on it.

The bike was parked for about two years. I cleaned the carburator and changed the fluids before I started the bike but when I got it running, the noise was in the top of the motor.

I'm assuming that the engine needs to be cold when setting the cam chain tension and the valves should be adjusted at the same time. I don't have a maual for this bike and it's rare to find one in this neck of the woods so not many people have worked on them either.

on the flywheel there a 3 marks, you want the T mark = TDC

the 87 250x has a automatic cam chain adjustor