How to change the timing chain? - 2005 Honda CBR 125 R

By rights you should pull the sidecase off the motor & the rocker cover, & fit an endless chain over the crankshaft to the cam(s)if you can get a chain with a joining link or get one from a bike shop & ask them to split it for you, you can just take the top cover off the motor, line the cam timing up (piston @ top dead centre(should have timing mark), cam lobes (pointy part) facing as far as you can get both at the same time from the cams, remove timing chain tensioner, let old chain go slack, join new one to it & loosely pull through, make sure bike is upright when you put new one in so chain locates on bottom sprocket properly, then reassemble chain & peen pins over with ball peen hammers.