If it looks like a brake lever, it's probably a brake lever.
Would be a bit obvious for it to be the throttle for the bb motor!
If he uses it while accelerating, there's probably something wrong.
@Emyr started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
If it looks like a brake lever, it's probably a brake lever.
Would be a bit obvious for it to be the throttle for the bb motor!