Section 16 MACHINERY AND MECHANICAL APPLIANCES; ELECTRICAL EQUIPMENT; PARTS THERE OF; SOUND RECORDERS AND REPRODUCERS, TELEVISION IMAGE AND SOUND RECORD ERS 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. 84 07 10 84 07 10 00 Commodity Code Description 84 07 10 00 00 - Aircraft engines 84 07 21 10 00 Outboard motors : Not exceeding 25hp 84 07 29 00 00 -- Other 84 07 31 00 00 -- Of a cylinder capacity not exceeding 50 cc 84 07 32 00 00 -- Of a cylinder capacity exceeding 50 cc but not exceeding 250 cc 84 07 33 00 00 -- Of a cylinder capacity exceeding 250 cc but not exceeding 1,000 cc 84 07 34 00 00 -- Of a cylinder capacity exceeding 1,000 cc 84 07 90 00 00 - Other engines