Welcome to the forum. You've come to the right place for help and advice to get you on the road.
We urge the use of the 'Google Custom Search' located at the top of each page for new members.The questions most commonly asked have been covered countless times so you'll probably find answers without posting them. Just type in a key word such as 'chain tensioner' and you'll be rewarded with pages of discussion on the subject.
If however you can't find the answer just ask. You'll get help quickly.
Good luck, have fun and ride safe.
Age and Treachery Will Always Triumph
Over Youth and Skill & "Charlie Don't Ride"