Foreman450es Wont Shift

[Rider300]

Im up at school and I gota call from my dad's friend asking me what was wrong with his foreman. He wants to plow with it today, but it wont shift into reverse. Im not at home to play with it so I figured Id ask if there was any simple fix for this or what could be wrong? Also how do you manually shift the foreman?
Thanks
Eric

[mark40]

according to the latest issue of dirt wheels they test ran a 05 foreman with electronic shift they said that when they stopped it in say third gear it would not down shift to first just by pressing the shift button .they said that it needed to be rocked back and fourth several times . i dont know if this applies to reverse tough . try it anyway i hope this helps mark