fzr750 gear problem

[zane nysschens]

Hi guys new to the site and fro south Africa
rereally need some advice
I have a fzr 750 that I just bought and 're sprayed
today was the first time i tried to take it for a spin
started her up and let it idle for a bit and then heatheaherd like a clunk noise while idling the noise came again and a seconds after that the bike jumps in to gear on its own
any suggestions pls

['87 750 RT]

maybe the part# 4 spring has failed allowing the lever to drop & engage the trans?