Our clutch, with them being a one speed could easily and correctly be referred to as an engager.
In reading the statute, I think this would be the concern;
Can be propelled by motor or human propulsion; and
(4) Is equipped with a power source that is incapable of propelling the vehicle at a speed of greater than 24 miles per hour on level ground and:
(a) If the power source is a combustion engine, has a piston or rotor displacement of 35 cubic centimeters or less regardless of the number of chambers in the power source; or
(b) If the power source is electric, has a power output of not more than 1,000 watts. [2001 c.749 §2]
Dunno and hope it helps