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Join Date: Nov 2007
Location: Chandler, Arizona
Welcome. You have the first year Vulcan 700/750 made. There are several things I recommend you check/service. If the cam chains are indeed making too much noise (plenty of info on that here), you need to do something about it before loose chains destroy the engine. I went to manual tensioners. You will also probably need to remove the carbs and clean them thoroughly. But first, before anything else, you need to do a final drive spline check/lube. There is also plenty of information on that here too. That single thing has probably caused VN750 owners more grief than any other single thing.
Also, since your bike is so old (nothing wrong with that), listen for any unusual noise coming from the left front of the engine, just ahead of the left footpeg. There is a balancer in there, with rubber dampers, and the dampers tend to deteriorate after a long time, allowing the balancer to damage the case.
Obviously the first thing to do is to change the oil and filter if you have not already done so, use the oil drain on the left side of the engine, not the one on the bottom. There is a screen behind it that needs to be checked for debris. Often you can avert serious problems just by checking this screen. Jerry.
I am a motorcyclist, NOT a biker.
1997 Vulcan 750, purchased about a week ago
2006 Sportster 1200 Low
2013 Royal Enfield Bullet 500, converted to carb
2001 Yamaha XT225, heavily modified
2004 Honda Rebel 250
1979 Vespa P200E
2002 Vulcan 750 parts bike
1994 Yamaha XT225 parts bike