A CV joint, short for constant velocity joint is an integral component of a vehicle. These joints prevent knocking and ensure we have a safe and smooth riding experience.
Not many things can go wrong that would warrant a replacement for a CV joint. The most probable cause is just normal wear and tear over time. However, there are certain signs one should look out for in order to stay on top of things. Two things worthy of mention here are bad grease and loss of lubrication. Both are bad for the CV Joint and are indications that the joint itself is failing. One way of being 100% sure is to put your ATV in reverse gear and drive around in circles. If the noise gets louder, that means you need to replace the CV joint as soon as possible.
And bad CV joint will make some noise and determining which means what would help you zero in on the problem. For example if you feel a vibration while driving forward, that is an indicator that the inboard plunge joints are not working properly. If the vibration increases with speed, then that means the tires are not properly balanced.
If you own a front wheel drive ATV like a Honda or Yamaha, it would be a good idea to check the boots near the CV joints for cracks and punctures on a regular basis. Also, check for missing or loose clamps and fix them accordingly. Running the ATV with a damaged boot is certainly not advisable as this will surely cause damage to it. If you sense something is wrong, park the ATV immediately and get it fixed before getting on it again.