How do I tighten the chain on my 1985 Honda 200X

Personally i would recheck cam timing. You probably moved cam in relation to crankshaft when you tightened tensioner.

sad to inform you of this FACT only HONDA ATV DEALER CAN HELP YOU

2 questions come to mind has the new sprocket got the same pitch ( distance between teeth ) as the crank shaft sprocket as this will make the chain jump out after a few degrees of movement. A quick check is to wrap the chain around the sprocket and see if there are links that do not sit fully around the teeth. There are different pitches for teeth and chains ( BA-- AM and metric)

This was answered here:

http://www.3wheelerworld.com/showthread.php/108597-What-s-the-best-oil-to-run-in-a-honda-200x

Hello Scott, BikeBandit.com has replacement parts for your bike. You can also find used parts on ebay. Here is the link for a NEW oil pump & chain and sprockets for the Magna. I hope this helps & good luck with your bike.

http://www.bikebandit.com/houseofmotorcycles/1985-honda-vf700c-magna/o/m2752#sch8735

The hoses from the carb are a bowl vent hose (top one) and the one out the bottom is a bowl drain. They don't connect to anything, typically they run down in the frame behind the motor. Good luck!

I'm fairly certain they were self tensioning, and often needed to replace the tensioner with the chain

the timing chain has an automatic tensioner at the rear of the engine cylinders, if the chain is loose the tensioner is either defective or the chain is stretched to the point the tensioner can no longer take up the normal slack created by wear.

on the back of the cylinder head you've got two 10mm nuts/bolt heads, with the engine running SLIGHTLY loosen these bolts and then tighten them back up and the excess chain noise should be gone.

Hope this helps