Illustrated Parts List Model Series 31N800 TYPE NUMBERS 0440. TABLE OF CONTENTS FORM MS--3593--04/20/2009 REPLACES FORM MS--3593--09/25/2008 FILE IN SECT. 2 OF SERVICE MANUAL 31N800 Air Cleaner... 5 Alternator... 7 Blower Housing... 5 Camshaft... 2 Carburetor... 4 Controls... 7 Crankshaft... 2 Cylinder... 2 Cylinder Head... 3 Electric Starter... 7 Engine Sump... 2 Flywheel... 6 Fuel Supply... 5 Gasket Set - Engine... 2 Gasket Set - Valve... 3 Governor Spring... 7 Ignition... 7 Kit - Carburetor Overhaul... 4 Lubrication... 3 Operator s Manual... 2 Piston, Rings, Connecting Rod... 2 Valves... 3 Warning Label... 2 PRINTED IN U.S.A. COPYRIGHT by BRIGGS & STRATTON CORPORATION All rights reserved. No part of this material may be reproduced or transmitted, in any form or by any means, electronic or mechanical, including photocopying, recording or by any information storage and retrieval system, without permission in writing from Briggs & Stratton Corporation.
29 32 1058 OPERATOR S MANUAL 1319 WARNING LABEL 28 27 REQUIRED when replacing parts with warning labels affixed. 25 27 1 26 2 3 6 43 306 307 16 718 46 24 758 146 45 741 757 1270 358 ENGINE GASKET SET 759 552 4 691 11 10 584 9 1264 1263 850 3 7 12 883 943 15 12 20 691 9 51A 51 524 617 842 868 1266A 1022 1266 22 20 3593-2 Assemblies include all parts shown in frames. 04/20/2009 2
847 523 842 7 1095 VALVE GASKET SET 51 1022 868 883 31N800 525 524 5 33 34 192 1034 830 1022 51 1029 50 51 617 42 238 36 617 7 868 51A 883 42 35 13 1026 337 635 383 45 186 54 654 1022 53 914 850A 1023 3593-3 Assemblies include all parts shown in frames. 04/20/2009 3
125A 141B 131A 130A 95A 987A 217 634B 108B 98A 117A 118A 51 94A 133A 105A 104A 127A 135 1091 137A 947A 276A 51 95A 104A 105A 975A 1127 137A NIKKI NOTE: This Illustration Represents Several Carburetors. Parts Shown May Not Be Included In All Kits. 121A CARBURETOR OVERHAUL KIT 98A 137A 1266 987A 634B 217 51A 1266A 617 127A 387A 1139 773 187 918 387 385A 387A 240A 601 601 385 3593-4 Assemblies include all parts shown in frames. 04/20/2009 4
305A 305 1040 304 1267 304D 1267 968 968 643 643 445 967 1139 773 187D 601 187A 601 445 967 1036 EMISSIONS LABEL 3593-5 Assemblies include all parts shown in frames. 04/20/2009 5
74 73B 73 415A 78 1005A 37 1070 1070A 1005B 1005 363 1044 23 1051 783 3593-6 Assemblies include all parts shown in frames. 04/20/2009 6
TRI CIRCUIT 474C 877B 1059 878A 526 501 NOTE: All stators use a No. 1119 mounting screw. 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. 309 510 1051 783 513 462 579 801 1090 311 797 802 503 356 616 729A 697 310 521 227 404 505 614 789 789A 1054 333 851 334 562 188 216 202 232 222 209 265 268 269 270 559 267 271 3593-7 Assemblies include all parts shown in frames. 04/20/2009 7
REF. PART REF. PART REF. PART NO. NO. DESCRIPTION NO. NO. DESCRIPTION NO. NO. DESCRIPTION 1 796010 Cylinder Assembly 2 399265 Kit--Bushing/Seal (Magneto Side) 3 391086s Seal--Oil (Magneto Side) 4 697106 Sump--Engine 05100200). - - - - - - - Note - - - - - 795903 Sump--Engine Date 05100300). (Must Use Kit 795903, Includes Sump And Counterweight). 5 796025 Head--Cylinder 08042700). 796186 Head--Cylinder Date 08042800). 6 690310 Washer 07070900). 7 796584 Gasket--Cylinder Head 9 697109 Gasket--Breather Date 07071900). (After Date Code Use Liquid Sealant Reference 850). 10 697157 Screw (Breather Assembly) 11 794683 Tube--Breather 12 697110 Gasket--Crankcase (.015 Thick) 13 793988 Screw (Cylinder Head) 07010900). 690360 Screw (Cylinder Head) Date 07011000). (Cylinder Head) 15 690946 Plug--Oil Drain (Square Head) 16 697127 Crankshaft 20 795387 Seal--Oil (PTO Side) 22 692125 Screw (Crankcase Cover/Sump) 23 693556 Flywheel 24 222698s Key--Flywheel 25 796172 Piston Assembly 08042700). 791937 Piston Assembly Date 08042800). 796173 Piston Assembly (.020 Oversize) 08042700). 793019 Piston Assembly (.020 Oversize) Date 08042800). 26 791936 Ring Set 08042700). - - - - - - - Note - - - - - 699026 Ring Set Date 08042800). 792649 Ring Set (.020 Oversize) 27 698469 Lock--Piston Pin 28 796007 Pin--Piston 08042700). 697099 Pin--Piston Date 08042800). 29 794122 Rod--Connecting 33 791934 Valve--Exhaust 34 791935 Valve--Intake 35 691279 Spring--Valve (Intake) 36 691279 Spring--Valve (Exhaust) 37 697352 Guard--Flywheel 42 499586 Keeper--Valve 43 691968 Slinger--Governor/Oil 45 690564 Tappet--Valve 46 793880 Camshaft 50 796180 Manifold--Intake 51 692137 Gasket--Intake 51A 692137 Gasket--Intake 53 690227 Stud (Carburetor) 54 691148 Screw (Intake Manifold) 73 796308 Screen--Rotating 07040800). 73B Screen--Rotating (Service With Flywheel Fan 794436) Date 07040900). 74 697897 Screw (Rotating Screen) Date 07040900). 78 691003 Screw (Flywheel Guard) 94A 793610 Kit--Idle Mixture 95A 690718 Screw (Throttle Valve) 98A 695408 Kit--Idle Speed 104A 694918 Pin--Float Hinge 105A 696136 Valve--Float Needle 108B 117A 118A 695419 Valve--Choke 843099 Jet--Main 08012400). 699732 Jet--Main Date 08012500). 790890 Jet--Main (High Altitude) 08012400). 699458 Jet--Main (High Altitude) Date 08012500) 3593-8 Assemblies include all parts shown in frames. 04/20/2009 8
REF. PART REF. PART REF. PART NO. NO. DESCRIPTION NO. NO. DESCRIPTION NO. NO. DESCRIPTION 121A 796184 Kit--Carburetor Overhaul (Nikki Carburetor) 125A 796109 Carburetor (Nikki Carburetor) 08012400). 792358 Carburetor (Nikki Carburetor) Date 08012500). 127A 690727 Plug--Welch 130A 699500 Valve--Throttle 131A 699501 Kit--Throttle Shaft 133A 694914 Float--Carburetor 135 792022 Tube--Fuel Transfer 137A 698781 Gasket--Float Bowl 141B 792777 Kit--Choke Shaft 146 691639 Key--Timing 187 791805 Line--Fuel (Formed)(10--1/4 Inches Long)(Cut to Required Length) 187A 791806 Line--Fuel (Formed)(21 Inches Long)(Cut to Required Length) 187D 791744 Line--Fuel (Formed)(14 Inches Long)(Cut to Required Length) 188 691693 Screw (Control Bracket) 192 691986 Adjuster--Rocker Arm 202 691841 Link--Mechanical Governor 209 692208 Spring--Governor 216 691840 Link--Choke 222 694042 Bracket--Control 227 691374 Lever--Governor Control 232 691842 Spring--Governor Link 238 691843 Cap--Valve 240A 691035 Filter--Fuel (Includes Paper Element With A 40 Micron Rating) 265 691024 Clamp--Casing 267 794904 Screw (Casing Clamp) 268 691025 Casing--Control Wire (Cut To Required Length) 269 691026 Wire--Control (Cut To Required Length) 270 691027 Nut (Control Wire Casing) 271 691028 Lever--Control 276A 695410 Washer--Sealing 304 796416 Housing--Blower (Black) 08082400). 304D 790929 Housing--Blower (Red) Date 08082500). 305 697102 Screw (Blower Housing) 305A 793376 Screw (Blower Housing)(Lift Screw) 306 796006 Shield--Cylinder 08042700). 697107 Shield-- Cylinder Date 08042800). 307 691003 Screw (Cylinder Shield) 309 693551 Motor--Starter 310 690323 Screw (Starter Motor) 311 497608 Brush Set 333 795315 Armature--Magneto 334 691061 Screw (Magneto Armature) 337 491055S Plug--Spark 356 697089 Wire--Stop 358 794150 Gasket Set--Engine 363 19203 Puller--Flywheel 383 89838S Wrench--Spark Plug 385 694476 Screw (Fuel Pump) 385A 690297 Screw (Fuel Pump) 387 697090 Pump--Fuel Date 08082500). 387A 808656 Pump--Fuel 08082400). 404 691691 Washer (Governor Crank) 415A 794129 Plug (Cover/Retainer) 445 698083 Filter--Air Cleaner Cartridge (Non Washable) 31N800 462 691261 Washer (Starter Cable) 474C 696457 Alternator (Tri Circuit) 501 794360 Regulator 503 691532 Strap--Starter 505 691251 Nut (Governor Control Lever) 510 693699 Drive--Starter 513 692024 Clutch--Drive 521 690581 Shield--Cable 523 699908 Dipstick 524 691032 Seal--Dipstick Tube 525 697085 Tube--Dipstick 526 697088 Screw (Regulator) 552 697144 Bushing--Governor Crank 559 697561 Screw (Remote Choke Stop) 562 691119 Bolt (Governor Control Lever) 579 691029 Nut (Starter Cable) 584 794682 Cover--Breather Passage (UsedWithLiquid Sealant Reference 850). 601 791850 Clamp--Hose 614 691620 Pin--Cotter 616 692012 Crank--Governor 617 692138 Seal--O Ring (Intake Manifold) 634B 698779 Spring/Seal Assembly 635 691909 Boot--Spark Plug 643 698401 Retainer--Air Filter 654 690958 Nut (Carburetor) 691 692407 Seal--Governor Shaft 697 690372 Screw (Drive Cap) 3593-9 Assemblies include all parts shown in frames. 04/20/2009 9
REF. PART REF. PART REF. PART NO. NO. DESCRIPTION NO. NO. DESCRIPTION NO. NO. DESCRIPTION 718 690959 Pin--Locating 729A 691224 Clip--Wire 741 697128 Gear--Timing 757 793242 Link--Counterweight 758 793763 Counterweight 05100200). - - - - - - - Note - - - - - 795903 Counterweight Date 05100300). (Must Use Kit 795903, Includes Sump And Counterweight). 773 796448 Retainer (Fuel Pump) 759 697392 Pin--Counterweight 783 693713 Gear--Pinion 789 698329 Harness--Wiring 789A 790544 Harness--Wiring 797 693167 Nut (Brush Retainer) 801 691283 Cap--Drive 802 691286 Cap--End 830 691095 Stud--Rocker Arm 842 691031 Seal--O Ring (Dipstick Tube) 847 790443 Dipstick/Tube Assembly 850 100100 Sealant--Liquid (Rocker Cover and Breather Gasket) 07071800). 851 692424 Terminal--Spark Plug 868 690968 Seal--Valve 877B 393537 Wire/Connector-- Alternator 878A 691955 Harness--Alternator 883 690968 Seal--Valve 914 691108 Screw (Rocker Cover) 918 791851 Hose--Vacuum 947A 699915 Solenoid--Fuel 967 697015 Filter--Pre Cleaner 968 699830 Cover--Air Cleaner (Red) 698403 Cover--Air Cleaner (Black) 975A 699502 Bowl--Float 987A 698777 Seal--Throttle Shaft 1005 796083 Fan--Flywheel 07040800). 1005A 796201 Fan--Flywheel Date 07040900). 1005B Fan--Flywheel (No Longer Available) (See Reference1005A For Service Flywheel Fan). 1022 272475s Gasket--Rocker Cover Date 07091000). (After Code Date Use Liquid Sealant Reference 850). 1023 791079 Cover--Rocker 1026 692003 Rod--Push (Intake) 692011 Rod--Push (Exhaust) 1029 691751 Arm--Rocker 1034 690822 Guide--Push Rod 1036 Label--Emissions (Available From A Briggs & Stratton Authorized Dealer) 1040 698368 Plate--Trim 1044 698139 Screw (Flywheel) 1051 691265 Ring--Retaining 1054 280275 Tie--Cable 1058 276344 Operator s Manual 1059 698516 Kit--Screw/Washer 1070 690372 Screw (Flywheel Fan) Date 08061000 and After Code Date 07040800). 1070A 690363 Screw 07040800). 1090 691293 Retainer--Brush 1095 690190 Gasket Set--Valve 1119 691183 Screw (Alternator) 1127 695407 Screw (Float Bowl) 1139 796449 Washer 1263 697124 Reed--Breather 1266 691917 Seal--O--Ring 1264 697104 Screw (Breather Reed) 1266 691917 Seal--O--Ring (Intake Elbow) 1266A 697123 Seal--O--Ring (Intake Elbow) 1267 697419 Latch--Blower Housing (Black) 697424 Latch--Blower Housing (Red) Date 08082500). 1270 793243 Plug--AVS Counterweight 06081300). 697156 Plug--AVS Counterweight Date 06081400) 1319 794467 Label--Warning 3593-10 Assemblies include all parts shown in frames. 04/20/2009 10