Section 16 Machinery and mechanical appliances; electrical equipment; parts thereof; sound recorders and reproducers, television image and sound recorders and reproducers, and parts and accessories of such articles 84 Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof 84 07 Spark-ignition reciprocating or rotary internal combustion piston engines. Commodity Code Description 84 07 10 Aircraft engines 84 07 21 Outboard motors 84 07 29 Other 84 07 31 Of a cylinder capacity not exceeding 50cc 84 07 32 Of a cylinder capacity exceeding 50 cc but not exceeding 250 cc 84 07 33 Of a cylinder capacity exceeding 250 cc but not exceeding 1,000 cc 84 07 34 Of a cylinder capacity exceeding 1,000 cc 84 07 90 Other engines