Summary of the content on the page No. 1
FORM MS −5036 −06/18/2008
REPLACES FORM MS −5036 −03/04/2008
FILE IN SECT. 2 OF SERVICE MANUAL
21B900
Illustrated Parts List
Model Series
21B900
TYPE NUMBERS
0015 through 0202.
TABLE OF CONTENTS
Air Cleaner . . . . . . . . . . . . . . . . . . . . . . . . . 6
Alternator . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Blower Housing . . . . . . . . . . . . . . . . . . . . . 6
Camshaft . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Carburetor . . . . . . . . . . . . . . . . . . . . .
Summary of the content on the page No. 2
21B900 1319 WARNING LABEL 1058 OPERATOR’S MANUAL REQUIRED when replacing parts with warning labels affixed. 1 2 11 10 584 850 9 1264 1263 552 691 718 4 4A 306 1017 12 12 307 22 15 20 20 415 1027 1024 1024A 239 943 965 750 Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine. 5036 −2 Assemblies include all parts shown in frames. 06/18/2008 2
Summary of the content on the page No. 3
21B900 25 27 26 28 27 29 847 32 523 842 16 46 24 525 45 146 357 524 741 43 758 1270 759 757 Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine. 5036 −3 Assemblies include all parts shown in frames. 06/18/2008 3
Summary of the content on the page No. 4
21B900 45 13 1026 5 34 42 868 36 238 33 42 42 337 7 883 635 35 383 1022 1034 51 617 830 1029 850 192 1022 914 654 53 1023 14 50 51 50B 51 617 705 617 54 415 186 358 ENGINE GASKET SET 3 943 12 1022 7 1095 VALVE GASKET SET 20 691 868 51 7 842 1266 1022 868 524 1266A 9 883 617 51 Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine. 5036 −4 Assemblies include all parts shown in frames. 06/18/2008 4
Summary of the content on the page No. 5
21B900 125A 141A 231 141 131 131A 117 118 108A 130A 130 634A 95A 634 95 108 987 987A 98A 93 98 94A 51 1091 94 51 105A 127A 133A 104A 1091 143 142 LMT / PART 127 NUMBER 106 LOCATIONS 105 133 104 135A 975A 137A 137A 975 137 276A 947A 276 1127 WALBRO 950 NIKKI 121A CARBURETOR OVERHAUL KIT 51 105A 987A 137A 121 CARBURETOR OVERHAUL KIT 95A 127A 1266 51 987 137 104 617 105 104A 276A 1266A 1266 617 634A 142 93 106 634 1266A 95 127 276 977A CARBURETOR GASKET SET 137A 977 CARBURETOR GASKET SET 276A 51 5
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21B900 1036 EMISSIONS LABEL 1040 1040A 304 305A 305 643 1267 967 445 968 431 1266A 1266 676 676A 864 677 883 677 300G 300A 613A 823 883 883 613B 613 613 81 81 Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine. 5036 −6 Assemblies include all parts shown in frames. 06/18/2008 6
Summary of the content on the page No. 7
21B900 949 415A 1005A 493 563 73A 75 74 1070A 78 73 1005 37 1044 1070 455 1005B 363 23 1051 783 23A 78A 37A 729B 608 65 729A 697 55 309 801 58 1051 57 60 510 544 56 783 310 513 803 459 689 1090 311 456 579 797 597 802 Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine. 5036 −7 Assemblies include all parts shown in frames. 06/18/2008 7
Summary of the content on the page No. 8
21B900 521 187 187A 601 601 240A 1054 240 356 187B 387 385A 356A 527 387A 788 387A 601 356B 385 527A 385 187C 356C 601 729 972 187B 957 789 601 958 918 601 601A 789A 789B 729 334 333 851 203 920 205 616 227 404 614 505 621 507 520 359 373 562 188 222 268 269 270 216 209 271 265 216A 559 267 559A 202 232 Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine. 5036 −8 Assemblies include all parts shown in frames. 06/18/2008 8
Summary of the content on the page No. 9
21B900 DUAL TRI 10 − 16 AMP DC ONLY CIRCUIT CIRCUIT 474A 1059 474B 1059 474C 1059 474D 1059 877A 877B 877C 877 578 578 578 878 526A 526A 526B 526B 501B 501D 501C 501A NOTE: All stators use a No. mounting screw 1119 . NOTE: The proper flywheel part number and/or the alternator magnet size will determine the alternator type or output. See repair instruction manual for additional information. Illustrations cover a range of engines. Parts shown without corresponding text may not be used on y
Summary of the content on the page No. 10
21B900 REF. PART REF. PART REF. PART NO. NO. DESCRIPTION NO. NO. DESCRIPTION NO. NO. DESCRIPTION 1 697377 Cylinder Assembly 5 792964 Head −Cylinder 23 698281 Flywheel 2 399265 Kit−Bushing/Seal 7Δ273280S Gasket −Cylinder Head Used on Type No(s). (Magneto Side) 9 697109 Gasket−Breather 0026, 0036, 0038, 0120, 0121, 0124, 3 391086S Seal −Oil (Used Before Code (Magneto Side) Date 07071900). 0129, 0131, 0132, 4 697106 Sump −Engine (After Date Code Use 0138, 0140, 0141, (Used After Code Date Liquid
Summary of the content on the page No. 11
21B900 REF. PART REF. PART REF. PART NO. NO. DESCRIPTION NO. NO. DESCRIPTION NO. NO. DESCRIPTION 24 222698S Key −Flywheel 51Δ692137 Gasket−Intake 81 691178 Lock −Muffler Screw 25 792305 Piston Assembly 53 690227 Stud 93 690602 Bushing −Throttle Shaft (Standard) (Carburetor) (Walbro) −−−−−− Note −−−−−− 54 691148 Screw 94 498030 Kit −Idle Mixture 792728 Piston (Intake Manifold) (Walbro) Assembly 55 695130 Housing −Rewind 94A 793610 Kit −Idle Mixture (.020” Oversize) Starter (Nikki) 26 792306 R
Summary of the content on the page No. 12
21B900 REF. PART REF. PART REF. PART NO. NO. DESCRIPTION NO. NO. DESCRIPTION NO. NO. DESCRIPTION 117 794352 Jet−Main 125A 794294 Carburetor 127 694524 Plug −Welch (Standard)(Nikki) (Nikki With Solenoid) (Walbro) (Used After Code Date Used on Type No(s). 127A 690727 Plug −Welch 07011400). 0110, 0114, 0116, (Nikki) −−−−−− Note −−−−−− 0119, 0120, 0121, 130 790024 Valve −Throttle 699897 Jet−Main 0123, 0126, 0130, (Walbro) (Standard)(Nikki) 0136, 0137, 0139, (Used After Code Date (Used Before Code
Summary of the content on the page No. 13
21B900 REF. PART REF. PART REF. PART NO. NO. DESCRIPTION NO. NO. DESCRIPTION NO. NO. DESCRIPTION 137281165S Gasket−Float Bowl 202 691841 Link −Mechanical 240 298090S Filter −Fuel (Walbro) Governor (Red, 150 Microns) 137A 698781 Gasket −Float Bowl 203 691381 Crank −Bell Used on Type No(s). Used on Type No(s). (Nikki) 0110. 141 790902 Kit −Choke Shaft 0020, 0028. −−−−−− Note −−−−−− (Walbro) 205 691693 Screw 394358Ss Filter −Fuel 141A 698778 Kit −Choke Shaft (Bell Crank) (White, 75 Microns) (Ni
Summary of the content on the page No. 14
21B900 REF. PART REF. PART REF. PART NO. NO. DESCRIPTION NO. NO. DESCRIPTION NO. NO. DESCRIPTION 300A 697349 Muffler 356 697397 Wire −Stop 455 695113 Cup −Flywheel Used on Type No(s). 356A 398808 Wire −Stop Used on Type No(s). 0015, 0016, 0020, 356B 697089 Wire −Stop 0015, 0016, 0020, 356C 399222 Wire −Stop 0022, 0026, 0028, 0022, 0028, 0029, 357 691483 Key −Drive Pulley 0029, 0036, 0038, 0114, 0117, 0121, Used on Type No(s). 0117, 0121, 0126, 0126, 0127, 0137, 0119, 0127, 0130, 0127, 0129, 0140
Summary of the content on the page No. 15
21B900 REF. PART REF. PART REF. PART NO. NO. DESCRIPTION NO. NO. DESCRIPTION NO. NO. DESCRIPTION 501A 794360 Regulator 525 697184 Tube −Dipstick 559A 693675 Screw (5 To 9 Amp Used on Type No(s). (Remote Choke Stop) Regulated) 0110, 0114, 0116, (Assemble Speed Used on Type No(s). 0120, 0121, 0123, Limiter Screw in 0110, 0119, 0123, 0126, 0130, 0136, Number ”2” Hole) 0127, 0130, 0136, 0137, 0139, 0146, Used on Type No(s). 0155, 0156, 0195, 0147, 0149, 0153, 0190. 0197, 0198. 0155, 0159, 0163, 562
Summary of the content on the page No. 16
21B900 REF. PART REF. PART REF. PART NO. NO. DESCRIPTION NO. NO. DESCRIPTION NO. NO. DESCRIPTION 614 691620 Pin −Cotter 757 697607 Link −Counterweight 847 790442 Dipstick/Tube 616 692012 Crank −Governor 758 697391 Counterweight Assembly 617 692138 Seal −O Ring (Used After Code Date Used on Type No(s). 05100200). 0110, 0114, 0116, (Intake Manifold) 621 692310 Switch −Stop −−−−−− Note −−−−−− 0120, 0121, 0123, Used on Type No(s). 795940 Counterweight 0126, 0130, 0136, 0119, 0127. (Used Before Cod
Summary of the content on the page No. 17
21B900 REF. PART REF. PART REF. PART NO. NO. DESCRIPTION NO. NO. DESCRIPTION NO. NO. DESCRIPTION 877C 399916 Wire/Connector − 975A 699502 Bowl −Float 1040 698368 Plate −Trim Alternator (Nikki) Used on Type No(s). −−−−−− Note −−−−−− 0131, 0132, 0159. (10 To 16 Amp 698783 Bowl −Float 1040A 697381 Plate −Trim Regulated) (Nikki) Used on Type No(s). 878 398661 Harness −Alternator (Used After Code Date 0026, 0036, 0038, 883 692236 Gasket−Exhaust 04100300). 0110, 0119, 0123, 914 691108 Screw Used on T
