1999 trailblazer 250 reverse issues

just bought a trailblazer 250 for my daughter automatic seemed like the perfect thing for a young girl just learning. when i picked up the bike the reverse was working as i used it to line up the bike for a slow run up the ramps into the bed of my pickup truck, got it home and went to unload it the following day and no reverse.
can anyone help me trouble shoot this before it becomes a costly repair job. forward seems to be working fine as i took my daughter trail riding on saturday for her birthday.
other issue is choke. have to remove seat and hold fingers over air intake hole and she starts right up. 10 seconds later can put back together and she purrs nicely. not super mechanically inclined but carpenter by trade so I’m not afraid of getting my hands dirty. any help would be greatly appreciated. thank you in advance. Anthony
abell10312@gmail.com

1999 trailblazer 250 reverse issues

just bought a trailblazer 250 for my daughter automatic seemed like the perfect thing for a young girl just learning. when i picked up the bike the reverse was working as i used it to line up the bike for a slow run up the ramps into the bed of my pickup truck, got it home and went to unload it the following day and no reverse.
can anyone help me trouble shoot this before it becomes a costly repair job. forward seems to be working fine as i took my daughter trail riding on saturday for her birthday.
other issue is choke. have to remove seat and hold fingers over air intake hole and she starts right up. 10 seconds later can put back together and she purrs nicely. not super mechanically inclined but carpenter by trade so I’m not afraid of getting my hands dirty. any help would be greatly appreciated. thank you in advance. Anthony
abell10312@gmail.com