| Name | Brand | Type |
|---|---|---|
| AA - Engine/motor assembly | STH | assembly |
| AB - Air filter | STH | assembly |
| AC - Crankcase, piston, connecting rod | STH | assembly |
| AD - Crankshaft | STH | assembly |
| AE - Regulator linkage | STH | assembly |
| AF - Muffler | STH | assembly |
| AG - Fuel system | STH | assembly |
| AH - Camshaft, valves | STH | assembly |
| AI - Ignition system, flywheel | STH | assembly |
| AJ - Governor gear, oil pan | STH | assembly |
| AK - Starting system, fan housing | STH | assembly |
| AL - Special tool | STH | assembly |