| Engine Model Series |
253700 |
254400 |
254700 |
255400 |
255700 |
256400 |
256700 |
257700 |
258700 |
259700 |
260700 |

Foam Filter |
270843 |
- |
272405 |
- |
270843 |
- |
270843 |
- |
272400 |
- |
- |

Cartridge Filter |
393725 393957
492519 |
393957
399968 |
- |
392286 |
- |
496077 |
393725 491519 |
493910 |
- |
493910 |
491021 |

Precleaner |
271794 271962 |
271794
271939 |
- |
270973 |
- |
492889 |
271962 |
272477 |
- |
272477 |
272444 492947 |
| Diaphragm |
- |
- |
- |
270988
(Fuel pump) |
- |
- |
- |
- |
- |
- |
- |
| Float Valve |
394681 Note AA |
394681
Note AA |
231790 |
394681
Note AA |
394681 Note AA |
231935 |
394681 Note AA |
231790 |
See parts catalog |
See parts catalog |
492188 |
| Needle Valve |
292681 (Idle)
396588 (Main) |
292681
(Idle)
99525 (Main) |
494383 (Idle) |
393541
(Idle)
393542 (Main) |
292681 (Idle)
396588 (Main) |
494383 |
292681 (Idle)
396568 (Main) |
494383
(Idle) |
494383 |
494383 |
492277 (Idle) |
| Carb. Overhaul Kit |
394698 |
394989 |
494882 |
393544 |
497450 |
394693 |
395670 |
715387 |
See Parts Catalog |
See Parts Catalog |
492282 |
| Rod Assy. |
490348 |
490348 |
490348 |
490348 |
490348 |
490348 |
490348 |
490348 |
490348 |
490348 |
492113 |
| Fuel Tank Cap |
392300 397975 |
392305 |
493988 |
- |
493988 |
392305
493988 |
392975 493988 |
493988 |
493988 |
493988 |
- |
| Air Cleaner Gasket |
270853 |
271910 |
281106 |
280199 |
270853 |
272706 |
270853 |
280106 |
- |
- |
272031 272489 |
| Carb. to Cylinder
gasket |
270872 |
270872 |
270872 |
270972 |
270872 |
272708 |
270872 |
270872 |
270872 |
270872 |
272029 |
| Carb to tank gasket |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |

Head Gasket |
271866 |
271866 |
271866 |
272164 |
271866 |
271866 |
271866 |
271866 |
271866 |
271866 |
272126 |
| Sump Gasket |
| .015 |
271702 |
| .005 |
270915 |
| .009 |
270916 |
|
| .015 |
272125 |
| .005 |
272219 |
| .009 |
272220 |
|
| .015 |
271702 |
| .005 |
270915 |
| .009 |
270916 |
|
| .015 |
272125 |
| .005 |
272219 |
| .009 |
272220 |
|
| .015 |
271702 |
| .005 |
270915 |
| .009 |
270916 |
|
| .015 |
272125 |
| .005 |
272219 |
| .009 |
272220 |
|
| .015 |
271702 |
| .005 |
270915 |
| .009 |
270916 |
|
| .015 |
271702 |
| .005 |
270915 |
| .009 |
270916 |
|
| .015 |
271702 |
| .005 |
270915 |
| .009 |
270916 |
|
| .015 |
271702 |
| .005 |
270915 |
| .009 |
270916 |
|
272124 |
| Gasket Set |
393411 |
492653 |
393411 |
393529 |
393411 |
497511 |
393411 |
393411 |
393411 |
393411 |
492271 |

Valve Cover Gasket |
27803 |
27803 |
27803 |
27803 |
27803 |
27803 |
27803 |
27803 |
27803 |
27803 |
272010 |
| Armature |
398811 |
398811 |
398811 |
398811 |
398811 |
398811 |
398811 |
398811 |
398811 |
398811 |
492341 |
| Points |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
| Condenser |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
| Flywheel Key |
222698 |
222698 |
222698 |
222698 |
222698 |
222698 |
222698 |
222698 |
222698 |
222698 |
222698 |
| Ignition Kit |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
| Muffler Assy. |
391569 491413 |
391569
292989
491413 491626 |
491413 |
392101
393465 |
391569 491413 |
497470 |
391569 491413 |
491413 |
391569 491413 |
491413 |
491016 491692 491796 |
| Oil Seals Mag/PTO |
391086/291675 |
391086/291675 |
391086/291675 |
391086/291675 |
391086/291675 |
391086/291675 |
391086/291675 |
391086/291675 |
391086/291675 |
391086/291675 |
491019/491019 |

Ring Set |
| STD |
394665 |
| .010 |
391781 |
| .020 |
391782 |
| .030 |
391783 |
| Chrome |
392331 |
|
| STD |
394665 |
| .010 |
391781 |
| .020 |
391782 |
| .030 |
391783 |
| Chrome |
392331 |
|
| STD |
391780 |
| .010 |
391781 |
| .020 |
391782 |
| .030 |
391783 |
| Chrome |
299743 |
|
| STD |
394665 |
| .010 |
391781 |
| .020 |
391782 |
| .030 |
391783 |
| Chrome |
392331 |
|
| STD |
391780 |
| .010 |
391781 |
| .020 |
391782 |
| .030 |
391783 |
| Chrome |
299743 |
|
| STD |
497522 |
| .010 |
497523 |
| .020 |
497524 |
| .030 |
497525 |
|
| STD |
394665 |
| .010 |
391781 |
| .020 |
391782 |
| .030 |
391783 |
| Chrome |
392331 |
|
| STD |
391780 |
| .010 |
391781 |
| .020 |
391782 |
| .030 |
391783 |
| Chrome |
392331 |
|
| STD |
391780 |
| .010 |
391781 |
| .020 |
391782 |
| .030 |
391783 |
| Chrome |
392331 |
|
| STD |
391780 |
| .010 |
391781 |
| .020 |
391782 |
| .030 |
391783 |
| Chrome |
392331 |
|
| STD |
492111 |
| .010 |
492936 |
| .020 |
492937 |
| .030 |
492938 |
|

Piston Assy |
| STD |
394661 |
| .010 |
394662 |
| .020 |
394663 |
| .030 |
394664 |
|
| STD |
394661 |
| .010 |
394662 |
| .020 |
394663 |
| .030 |
394664 |
|
| STD |
391285 |
| .010 |
391287 |
| .020 |
391288 |
| .030 |
391289 |
|
| STD |
394661 |
| .010 |
394662 |
| .020 |
394663 |
| .030 |
394664 |
|
| STD |
391285 |
497518 |
| .010 |
391287 |
497519 |
| .020 |
391288 |
497520 |
| .030 |
391289 |
497521 |
|
| STD |
497518 |
| .010 |
497519 |
| .020 |
497520 |
| .030 |
492521 |
|
| STD |
394661 |
| .010 |
394662 |
| .020 |
394663 |
| .030 |
394664 |
|
| STD |
394661 |
| .010 |
394662 |
| .020 |
394663 |
| .030 |
394664 |
|
| STD |
391285 |
| .010 |
391287 |
| .020 |
391288 |
| .030 |
391289 |
|
| STD |
394661 |
| .010 |
394662 |
| .020 |
394663 |
| .030 |
394664 |
|
| STD |
492110 |
| .010 |
492933 |
| .020 |
492934 |
| .030 |
492935 |
|
| Clutch |
399671 |
399671 |
399671 |
399671 |
399671 |
399671 |
399671 |
399671 |
399671 |
399671 |
- |
| Grip |
66728 490652 |
66728
490652 |
490652 |
490652 |
66728 490652 |
490652 |
66728 490652 |
490652 |
490652 |
490652 |
490652 |
| Starter Pulley |
295871 Note U |
295871
Note U |
295871 Note U |
295871
Note U |
295871 Note U |
295871
Note U |
295871 Note U |
295871
Note U |
295871 Note U |
295871 Note U |
281200 |
| Starter Spring |
490179 |
490179 |
490179 |
490179 |
490179 |
490179 |
490179 |
490179 |
490179 |
490179 |
492194 |
| Exhaust Valve |
261185 |
261185 |
261185 |
261185 |
261185 |
261185 |
261185 |
261185 |
261185 |
261185 |
492117 |
| Intake Valve |
261462 |
261462 |
261462 |
261462 |
261462 |
261462 |
261462 |
261462 |
261462 |
261462 |
492116 |