I have mountain bike which is around 1.5 years old. When I bought it, I used it without any hassles and all was fine. But one day I overshifted the friction shifter and the shifter was bent. Now it won't shift to chain levels. I knew that friction was of no use and I didn't look into this matter. A year passed, and now I am wondering about that issue because one of my friend bought a new cycle and he shows me, and I get burned up.
The main issue is that when I brought the cycle I didn't knew so much about gears. And when I shift gears to the 6th gear, it won't shift at all. I have a 18 speed bike, and out of them I can only use 15 gears. When I shift to 1st gear, one gear remains to be shifted. This was the problem since I bought the bike. But now I am jealous of my friend. And, my friction shifter is out of order. It is bent and not properly adjusted. When I shift to 1st gear the chain falls down, and the shifter rubs with the chain. So I can only shift between 5-2 gears. Please help me, I am not so expert in gears.