Polaris ATV Forum banner

trail boss 250 idle

  1. ATV Repair and Maintenance
    Hey guys, any input would be appreciated. I bought a 90 trail boss 250 and the top end went in it so I rebuilt it. It now has 120 psi. I pulled the carb off and the inside was severely deteriorated so I went to a local cycle salvage and got a carb from an 88 tb 250. I replaced the jets and...