kick start gear given in? Not uncommon. Pop the clutch side cover off (the big 1 not just the clutch cover) and have a sniff around, may have got a tooth stuck.
Why does the inside of the port look like its covered in dirt just like the outside. Looks strange to me, but the small section of piston does not appear damaged.
W8YSON,
In the future please post in a single, applicable forum, thanks.
Who was the last person to add fuel to the tank? We see problems such as this all the time. Somebody borrows a bike and somehow gas (not premixed) is added from the wrong container and ... there you go.
If it's the rod that means a complete disassembly and repair. To pay a shop to do the complete job is probably in the $1200-1600 range depending on how extensive the damage is.