Mfg. No: B1

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3 Model Components Table Of Contents Page Air Cleaner Alternator, Ignition, Controls, Governor Spring Carburetor - Ruixing Carburetor Overhaul Kit, Engine Gasket Set, Valve Gasket Set Carburetor, Fuel Supply Crankshaft, Camshaft, Cylinder, Crankcase Cover/Sump, Piston/Rings/Connecting Rod Cylinder Head, Valves Exhaust System, itake Mnifold Lubrication, Electric Starter Replacement Engine Rewind Starter, Blower Housing, Flywheel Shrouds Copyright Briggs and Stratton. All Rights reserved 3 01-Apr-2018

5 Air Cleaner REF NO PART NO QTY DESCRIPTION Gasket-Air Cleaner 163A Gasket-Air Cleaner NUT -(Air Cleaner Base) (Air Cleaner Base) S Filter-A/C Cartridge Knob-Air Cleaner Cover -Used After Code Date Knob-Air Cleaner Cover -Used Before Code Date Retainer-Air Filter 643A RETAINER, Air Filter 711A Screw -(Carburetor Shield) 717A Bracket-Air Cleaner 875D Base-Air Cleaner 875G Base-Air Cleaner Screw -(Air Cleaner Bracket) S Filter-Pre Cleaner Cover-Air Cleaner 971A Screw -(Air Cleaner Base to Carburetor/Throttle Body) 996A Shield-Carburetor Duct-Air Copyright Briggs and Stratton. All Rights reserved 5 01-Apr-2018

7 Alternator, Ignition, Controls, Governor Spring REF NO PART NO QTY DESCRIPTION Screw -(Control Bracket) (M8x14mm) Screw -(Control Bracket) (M8x18mm) 203A Crank-Bell Bushing-Lever Screw -(Bell Crank) Rod-Governor Control Spring-Governor -(White) Spring-Governed Idle Link-Throttle Link-Choke Bracket-Control Rod-Choke Lever-Governor Control Spring-Governor Link Clip-Control Rod CLAMP, Casing Screw -(Casing Clamp) (M5x20mm) CASING, Control Wire -(Cut To Required Length) WIRE, Control -(Cut To Required Length) NUT -(Control Wire Casing) (Control Wire Casing) Lever-Control Washer -(Governor Control Lever) Armature-Magneto Screw -(Magneto Armature) Screw -(Ground Terminal) Washer -(Ground Terminal) 373A NUT -(Ground Terminal) Washer -(Bell Crank) 474C ALTERNATOR -(5 or 9 Amp. Tri Circuit<(>,<)> Regulated) 501A REGULATOR Nut -(Governor Control Lever) (Governor Control Lever) Insulator Terminal-Ground 526A Screw -(Regulator) (Regulator) Grommet Bolt -(Governor Control Lever) Wire Assembly -(With Diodes) Screw -(Starter Motor) (Drive Cap) (M8x18mm) Copyright Briggs and Stratton. All Rights reserved 7 01-Apr-2018

9 Alternator, Ignition, Controls, Governor Spring REF NO PART NO QTY DESCRIPTION Screw -(Control Rod Clip) S TERMINAL, Spark Plug Tie-Cable KIT, Screw/Washer Screw -(Alternator) Nut -(Bell Crank) Copyright Briggs and Stratton. All Rights reserved 9 01-Apr-2018

11 Carburetor - Ruixing REF NO PART NO QTY DESCRIPTION Gasket-Intake 95B Screw -(Throttle Valve) (Ruixing) 98B Kit-Idle Speed -(Ruixing) 104B Pin-Float Hinge -(Ruixing) 105B Valve-Float Needle -(Ruixing) 117B Jet-Main -(Standard) (Ruixing) 118B Jet-Main -(High Altitude) (9000 Feet) 118B Jet-Main -(High Altitude) (5000 Feet) 121B Kit-Carburetor Overhaul -(Ruixing) 122C Spacer-Carburetor 125C Carburetor -(Ruixing with Solenoid) -Used After Code Date B Valve-Throttle -(Ruixing) 133B Float-Carburetor -(Ruixing) 137B Gasket-Float Bowl -(Ruixing) 141B Kit-Choke Shaft -(Ruixing) 163A Gasket-Air Cleaner SCREW -(Choke Valve) (Nikki) 231B Screw -(Choke Valve) (Ruixing) 276D WASHER, Sealing -(Ruixing) 789A Harness-Wiring 947B SOLENOID, Fuel -(Ruixing) 950B Screw-Float Bowl -(Ruixing) 975B Bowl-Float -(Ruixing) Copyright Briggs and Stratton. All Rights reserved Apr-2018

13 Carburetor Overhaul Kit, Engine Gasket Set, Valve Gasket Set REF NO PART NO QTY DESCRIPTION S Seal-Oil -(Magneto Side) S Gasket-Cylinder Head Gasket-Breather Gasket-Crankcase S Seal-Oil -(PTO Side) Kit-Idle Mixture Kit-Idle Mixture -(Nikki) Pin-Float Hinge Pin-Float Hinge Valve-Float Needle Valve-Float Needle -(Nikki) Kit-Carburetor Overhaul Plug-Welch Gasket-Float Bowl -(Nikki) Gasket-Float Bowl Nozzle-Carburetor Gasket-Air Cleaner Bushing-Choke Shaft Seal-O Ring -(Oil Pump) 276A Washer-Sealing -(Rocker Cover) 276C Washer-Sealing 276B Washer-Sealing Gasket Set-Engine O-RING, Oil Gallery -(Crankcase Cover/Sump or Cylinder Assembly) Seal-Choke/Throttle Shaft Washer -(Throttle Shaft) Seal-Governor Shaft Retainer-E Ring Spacer-Throttle SEAL, Valve Gasket-Exhaust Seal-Throttle Shaft Gasket-Oil Adapter 988A Gasket-Oil Adapter S Gasket-Rocker Cover Ring-Retaining Cap-Limiter Gasket Set-Valve Copyright Briggs and Stratton. All Rights reserved Apr-2018

15 Carburetor, Fuel Supply REF NO PART NO QTY DESCRIPTION Tube-Jet Kit-Idle Mixture Kit-Idle Mixture -(Nikki) SCREW -(Throttle Valve) (Nikki) Shaft-Throttle -Used Before Code Date Shaft-Throttle -(Nikki) -Used After Code Date Used Before Code Date Shaft-Throttle -(Nikki) Kit-Idle Speed -(Nikki) Pin-Float Hinge Pin-Float Hinge Valve-Float Needle Valve-Float Needle -(Nikki) Valve-Choke -(No Longer Available, For Replacement See Reference 125C or 125Dw/ Solenoid) Valve-Choke Shaft-Choke Shaft-Choke Jet-Main -(Standard) Jet-Main -(Standard) (Nikki) Jet-Main -(High Altitude) (High Altitude) Jet-Main -(High Altitude) (5000 Feet) Jet-Main -(High Altitude) (9000 Feet) 125B Carburetor -(No Longer Available) (See Reference 125C for Service Carburetor) -Used Before Code Date Plug-Welch Valve-Throttle -(Nikki) Float-Carburetor Copyright Briggs and Stratton. All Rights reserved Apr-2018

17 Carburetor, Fuel Supply REF NO PART NO QTY DESCRIPTION Float-Carburetor -(No Longer Available, For Replacement See Reference 125C or 125Dw/ Solenoid) Gasket-Float Bowl -(Nikki) Gasket-Float Bowl Nozzle-Carburetor Line-Fuel -(23 Inches Long)(Cut To Required Length) LINE, Fuel -(15" Long)(Cut To Required Length) 187D LINE, Fuel -(Formed)(14 Inches Long)(Cut To Required Length) SCREW -(Choke Valve) (Nikki) 240C FILTER, Fuel Bushing-Choke Shaft 276B Washer-Sealing 276C Washer-Sealing Screw -(Fuel Pump) PUMP, Fuel CLAMP, Tube 601A CLAMP, Hose 601B CLAMP, Hose 628A Screw -(Fuel Pump Bracket) Seal-Choke/Throttle Shaft Washer -(Throttle Shaft) Clip-Wire Retainer-E Ring Bracket-Fuel Pump 789A Harness-Wiring Spacer-Throttle Hose-Vacuum Solenoid-Fuel Solenoid-Fuel -(Nikki) Plug-Carburetor 955A Plug-Carburetor 955A Plug-Carburetor CAP, Connector 964A Cap-Connector Bowl-Float 975A Bowl-Float Seal-Throttle Shaft Ring-Retaining Copyright Briggs and Stratton. All Rights reserved Apr-2018

21 Crankshaft, Camshaft, Cylinder, Crankcase Cover/Sump, Piston/Rings/Connecting Rod REF NO PART NO QTY DESCRIPTION Cylinder Assembly Kit-Bushing/Seal -(Magneto Side) S Seal-Oil -(Magneto Side) Sump-Engine Breather Assembly Gasket-Breather Gasket-Crankcase PLUG, Oil Drain -(3/8"-18 NPTF - Internal 3/8" Sq) PLUG, Oil Drain -(3/8"-18 NPTF-External 7/16" Sq) Crankshaft S Seal-Oil -(PTO Side) Screw -(Crankcase Cover/Sump) 25A Piston Assembly -(.020" Oversize) 25A Piston Assembly Ring Set -(.020" Oversize) Ring Set Lock-Piston Pin Pin-Piston S Rod-Connecting Screw -(Connecting Rod) Tappet-Valve Camshaft Seal-O Ring -(Oil Pump) Washer-Sealing KEY, Drive Pulley Key-Woodruff 377A KEY, Woodruff PLUG -(Square Head) O-RING, Oil Gallery -(Crankcase Cover/Sump or Cylinder Assembly) Screw -(Oil Pump Screen) (Oil Pump Screen) Bushing-Governor Crank 552A Bushing-Governor Crank Baffle-Breather Screw -(Oil Pump) PIN, Cotter Crank-Governor Seal-Governor Shaft Pin-Locating Gear-Timing Screen-Oil Pump Pump-Oil Copyright Briggs and Stratton. All Rights reserved Apr-2018

23 Crankshaft, Camshaft, Cylinder, Crankcase Cover/Sump, Piston/Rings/Connecting Rod REF NO PART NO QTY DESCRIPTION Spool-Governor Label-Emissions LABEL, Warning Repair Manual Copyright Briggs and Stratton. All Rights reserved Apr-2018

25 Cylinder Head, Valves REF NO PART NO QTY DESCRIPTION Head-Cylinder 5A Head-Cylinder S Gasket-Cylinder Head 10B Screw -(Breather Assembly) 11B Tube-Breather Screw -(Cylinder Head) Valve-Exhaust Valve-Intake Spring-Valve -(Intake) Spring-Valve -(Exhaust) Retainer-Valve RETAINER, Valve Tappet-Valve Adjuster-Rocker Arm 276A Washer-Sealing -(Rocker Cover) PLUG, Spark S WRENCH, Spark Plug Seal-O Ring -(Breather Assembly) 601C Clamp-Hose BOOT, Spark Plug Stud-Rocker Arm SEAL, Valve Bushing-Valve Guide Screw -(Rocker Cover) S Gasket-Rocker Cover 1023A Cover-Rocker Rod-Push -(Intake)(Steel) Rod-Push -(Exhaust)(Aluminum) ARM, Rocker PIVOT, Rocker Arm Screw -(Rocker Arm Stud) Copyright Briggs and Stratton. All Rights reserved Apr-2018

27 Exhaust System, itake Mnifold REF NO PART NO QTY DESCRIPTION 50B Manifold-Intake Screw -(Intake Manifold) (M8x67mm) (Dog Point) 300B S Muffler 436B Manifold-Exhaust Screw -(Exhaust Manifold) 613A Screw -(Muffler) DEFLECTOR, Muffler SCREW -(Muffler Deflector) Gasket-Exhaust Clamp-Muffler Stud -(Intake Manifold) Copyright Briggs and Stratton. All Rights reserved Apr-2018

29 Lubrication, Electric Starter REF NO PART NO QTY DESCRIPTION Switch-Oil Pressure Screw -(Dipstick Tube) 309E Motor-Starter Screw -(Oil Filter Cover) (M6x21mm) PLUG -(Square Head) Dipstick Seal-Dipstick Tube Tube-Dipstick Stud -(Oil Filter Adapter) Screw -(Starter Motor) (Drive Cap) (M8x18mm) Cover-Oil Filter Cover-Starter Drive Screw -(Starter Drive Cover) 732A Screw -(Starter Drive Cover) Screw -(Oil Filter Adapter) (M6x21mm) NUT -(Brush Retainer) 797A NUT -(Brush Retainer) Washer -(Oil Filter Adapter) Seal-O Ring -(Dipstick Tube) Gasket-Oil Adapter 988A Gasket-Oil Adapter Filter-Oil Adapter-Oil Filter Valve-Oil Drain Shut Off Copyright Briggs and Stratton. All Rights reserved Apr-2018

32 Rewind Starter, Blower Housing, Flywheel REF NO PART NO QTY DESCRIPTION 23A Flywheel Spring-Rewind Starter Rope-Starter Insert-Grip Grip-Starter Rope 65A Screw -(Rewind Starter) 73A Screen-Rotating 74A Screw -(Rotating Screen) Housing-Blower Screw -(Blower Housing) 305B Screw -(Blower Housing) Nut -(Flywheel) PULLER, Flywheel Cup-Flywheel Plate-Pawl Friction Pawl-Ratchet Bracket-Mounting Spring-Pawl Screw -(Debris Screen Guard) NUT -(Rewind Starter) Starter-Rewind Clip-Wire Guard-Rewind Guard-Debris Screen NUT -(Rewind Guard) Copyright Briggs and Stratton. All Rights reserved Apr-2018

34 Shrouds REF NO PART NO QTY DESCRIPTION Guard-Flywheel Screw -(Flywheel Guard) Screw -(Back Plate) Guide-Air -(Cylinder #1) 215A Guide-Air -(Cylinder #2) Screw -(Cylinder Head Cover) Screw -(Air Guide Cover) Screw -(Carburetor/EFI Cover) Plate-Back Washer -(Cylinder Head Cover) Cover-Starter Drive Screw -(Starter Drive Cover) 732A Screw -(Starter Drive Cover) Cover-Air Guide Cover-Carburetor/EFI -(NO LONGER AVAILABLE) Copyright Briggs and Stratton. All Rights reserved Apr-2018

Illustrated Parts List. Model Series. TYPE NUMBERS 0001 through TABLE OF CONTENTS

Illustrated Parts List. Model Series. TYPE NUMBERS 0001 through TABLE OF CONTENTS Illustrated Parts List Model Series 305700 TYPE NUMBERS 0001 through 3033. TABLE OF CONTENTS FORM MS6008 Rev B--04/17/2014 REPLACES FORM MS--6008--09/05/2007 FILE IN SECT. 2 OF SERVICE MANUAL 305700 Air