ty 80 chain rubbing noise on chain tensioner why is this? it came off tensioner becuase transporting .then i put chain back on and when i push bike its a rubbing noise. there is rubber on the tensioner isnt fully worn??

It is because the chain is rubbing on the tensioner block.....hence the rubbing noise!

is it supposed to rub on the tensioner block?

then if it is how do i fix the problem new to bikes btw?

Any or most trials bike will produce noise from the chain when it’s being pushed manually. Just make sure the tensioner isn’t bent, the hard rubber block should be in line with the chain. The chain should be on top of the block and the tensioner spring lifts the chain up. The block if worn can be obtained from one of the many parts suppliers on line or if you are handy you can make one to the same dimensions as the one installed already. The noise from the chain may also be because it is passing across the top of the swing arm and may mean the chain might need adjusting.