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BRIGGS & STRATTON 4-CYCLE ENGINE MODEL NUMBER 123K02-O258-E1
KEY PART
NO. NO, DESCRIPTION
KEY PART
NO. NO. DESCRIPTION
26 499425 Ring Set-Piston (Standard) 443 692523
499426 Ring Set-Piston (.010" Oversize) 445 491588
499427 Ring Set-Piston (.020" Oversize) 455 691219
499428 Ring Set-Piston (.030" Oversize) 456 692299
27 691866 Lock-Piston Pin 459 281505
28 499423 Pin-Piston 505 231082
29 499424 Rod-Connecting 523 495264
32 691664 Screw (Connecting Rod) 524 692296
32A 695759 Screw (Connecting Rod) 525 495265
33 262651 Valve-Exhaust 529 691923
34 262652 Valve-Intake 562 92613
35 691270 Spring-Valve (Intake) 564 698589
36 691270 Spring-Valve (Exhaust) 584 692342
37 694086 Guard-Flywheel 565 691879
40 692194 Retainer-Valve 592 690800
43 691997 SUnger-Governor/Oil 597 691696
45 690548 Tappet-Valve 601 95162
46 691449 Camshaft 604 698588
48 498829 Short Block (Replacement 608 497680
Engine 125K02-0253) 613 691340
50 497465 Manifold-Intake 615 690340
51 272199 • Gasket-Intake 616 698801
54 691650 Screw (intake Manifold) 617 270344
55 691421 Housing-Rewind Starter 621 692310
58 692259 Rope-Starter (Cut to Length) 633 691321
60 281434 Grip-Starter Rope 635 66538
65 690837 Screw (Rewind Starter) 668 493823
78 691108 Screw (Flywheel Guard) 670 692294
81 691740 Lock-Muffler Screw 684 690345
95 691636 Screw (Throttle Valve) 689 691855
97 696565 Shaft-Throttle 718 690959
104 691242 _Pin-FIoat Hinge 741 691830
117 498978 Jet-Main (Standard) 745 691648
118 497466 Jet-Main (High Altitude) 842 691031
121 498260 Kit-CarburetorOverhaul 847 692017
125 498170 Carburetor 851 493880
127 694468 _Plug-Welch 868 697338
130 696564 Valve-Threttle 869 691155
133 398187 Float-Carburetor 870 690380
134 398188 _)Valve-Needle/Seat 871 262001
137 693981 _Gasket-FloatBowl 63709
146 690979 Key-Timing 921 696587
159 691753 Bracket-AirCleanerPdmer 922 692135
163 272653 .Cl:l:Gasket-Air Cleaner 923 695891
167 691050 Line-Fuel (Cut to Required Length) 957 397974
188 693399 Screw (Control Bracket) 966 496116
190 690940 Screw (Fuel Tank) 968 692298
202 691829 LInk-MechanicaIGovernor 969 691138
209 690319 Spring-Governor 970 691669
222 692467 Bracket-Control 972 495224
227 690783 Control Lever-Governor 975 493640
276 271716 Cl:J:SealingWasher 976 694395
287 690940 Screw (Dipstick Tube) 977 498261
300 692038 Muffler 1019 494256
304 695892 Housing-Blower 1036 697456
305 691108 Screw (Blower Housing) 1059 692311
306 690450 Shield-Cylinder 1210 498144
307 690345 Screw (Cylinder Shield) 1211 498144
332 690662 Nut (Flywheel)
333 802574 Armature-Magneto
334 691061 Screw (Armature Magneto)
337 802592 Plug-Spark
356 692390 Wire-Stop
358 497316 Engine Gasket Set
363 19069 Flywheel Puller
365 692524 Screw (Carburetor)
363 89838 Wrench-Spark Plug
404 690272 Washer (Governor Crank)
425 690670 Screw (Air Cleaner Cover)
Screw(AirCleaner PrimerBase)
Filter-AirCleanerCartridge
Cup-Flywheel
Plate-PawlFriction
Pawl-Ratchet
Nut (GovernorControlLever)
Dipstick
• Seal-DipstickTube
Tube-Dipstick
Grommet
Bolt(GovernorControlLever)
Screw(ControlCover)
Cover-BreatherPassage
• Gasket-BreatherPassage
Nut (Rewind Starter)
Screw(PawlFdctionPlate)
Clamp-Hose
Cover-Contrel
Starter-Rewind
Screw(Muffler)
Retainer-GovernorShaft
Crank-Governor
•O:l:SeaI-ORing(Intake Manifold)
Switch-Stop
O:E:SeaI-ThrottleShaft
Boot-SparkPlug
• Spacer(Includes2)
Spacer-FuelTank
Screw(BreatherPassageCover)
Spring-Friction
Pin-Locating
Gear-Timing
Screw (Brake)
• SeaI-O Ring(DipstickTube)
Assembly-Dipstick/Tube
TerminaFSparkPlug
Seal-Valve
Seat-Valve(intake)
Seat-Valve(Exhaust)
Bushing-Guide(Exhaust)
Bushing-Guide(Intake)
Cover-BlowerHousing
Spring-Brake
Brake
Cap-FuelTank
Base-AirCleaner Primer
Cover-AirCleaner
Screw(BlowerHousingCover)
Screw(AirCleaner PrimerBracket)
Tank-Fuel
Bowl-Float
Primer-Carburetor
Set-CarburetorGasket
Kit-Label
Label-Emissions
Kit-Screw/Washer
Assembly-Pulley/Spring(Pulley)
Assembly-Pulley/Spring(Spring)
RPM Settings: Low: 1900-2100; High:3000-3200
• Includedin EngineGasketSet, KeyNo.358
IncludedinCarburetor OverhaulKit, Key No. 121
:1: IncludedinCarburetorGasketSet,KeyNo. 977
NOTE: AllcomponentdimensionsgiveninU.S. inches
1 inch= 25.4 mm
43
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