Never seen it done, though I'm sure it wouldn't take much to fit a starter. The big problem may be the battery - it's tiny as it never needed to power a starter.
Is he unable to bumb start too? The NSR will start really easily - turning the back wheel by hand on a paddock stand will do it!
_________________
MC21SP Plaything
BMW F800GS Bumblebee
Triumph 9551 Daytona Big boys toy
FJ1100 Sporting relic
GTS1000 oddball