balance tires?
flywheel needs machining
yes
If the vehicle is stuck in 2nd gear and does not change gears.... you more then likely have a bad speed sensor. The transmission is electronic and the 2nd gear is considered the " Safe" mode. Take it and have the transmission computer checked for codes.
Yes
clutch gone try putting into gear then start engine be ready to shut engine off
no you start in 1st gear then 2nd hold around 4000rpms depending on what you have for a engine
bent shift fork and worn out gear slots. Split the engine cases and look for any rounded off edges.
In a manual transmission between the gears. If one fails it will make it very difficult or impossible to shift in to the lower gear, i.e. if the 2nd gear synchronizer goes out you cant shift from 3rd to 2nd gear
TAke it to auto zone and have the codes read for free/
its where you put your dirt bike or ATV in 2nd gear to make it start by pushing it fast or going down a steep hill ..
You need to have the engine and trans checked for codes. The trans computer defaults to 2nd gear when it detects a problem and sets a code. You could have anything from a sensor failure to a major internal failure.