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Briggs and Stratton 12A300 Series Engine Parts

There are multiple versions of this engine

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Download Diagram

Fig #	Type #	Date Code	Part #	Img	Part Name	Availability	Price	Qty
1			699510		Cylinder Assy	Ships in 4 - 6 business days	$161.10
2			796961		Kit-Bushing/Seal	Ships in 4 - 6 business days	$10.34
3			299819S		Seal-Oil	Ships in 4 - 6 business days	$3.63
5			591299		Carburetor	In stock 3 available	$64.02
7			698210		Gasket-Cylinder Head	In stock 1 available	$5.12
11B			695745		Tube-Breather	Ships in 4 - 6 business days	$3.25
12			699485		Gasket-Crankcase	In stock 7 available	$5.39
13			699482		Screw	Ships in 4 - 6 business days	$2.04
15			691686		Plug-Oil Drain	Ships in 4 - 6 business days	$2.09
15B			695757		Plug-Oil Drain	Ships in 4 - 6 business days	$4.95
16	Type: Check type number and/or date code for this figure number.
	0917		797077		Crankshaft	Ships in 4 - 6 business days	$101.15
			797070		Crankshaft	Ships in 4 - 6 business days	$101.15
18			699804		Cover-Crankcase	Ships in 4 - 6 business days	$105.33
20			692550		Seal-Oil	Ships in 4 - 6 business days	$4.35
21			281658S		Cap-Oil Fill	Ships in 4 - 6 business days	$2.48
Fig #	Type #	Date Code	Part #	Img	Part Name	Availability	Price
22			799318		Screw	Ships in 4 - 6 business days	$2.04
23			699516		Flywheel	Ships in 4 - 6 business days	$99.17
24			222698S		Key-Flywheel Note: .185	In stock 7 available	$2.15
25	Type: Check type number and/or date code for this figure number.
			799064		Piston Asm, 0.020	Ships in 4 - 6 business days	$59.95
			795429		Piston Assembly-Standard	Ships in 4 - 6 business days	$35.09
26	Type: Check type number and/or date code for this figure number.
			791324		Ring Set (.020 Oversize)	Ships in 4 - 6 business days	$21.73
			791969		Ring Set-Standard	Ships in 4 - 6 business days	$21.18
27			691866		Lock-Piston Pin	Ships in 4 - 6 business days	$1.87
28			499423		Pin-Piston/Standard	Ships in 4 - 6 business days	$3.69
29			798813		Connecting Rod	Ships in 4 - 6 business days	$17.82
30			791584		Dipper-Conn Rod	Ships in 4 - 6 business days	$3.30
32			691664		Screw	Ships in 4 - 6 business days	$1.93
32A			695759		Screw	Ships in 4 - 6 business days	$2.04
33			499642		Valve-Exhaust	Ships in 4 - 6 business days	$17.93
34			795443		Valve-Intake	Ships in 4 - 6 business days	$16.23
Fig #	Type #	Date Code	Part #	Img	Part Name	Availability	Price
35			691304		Spring-Valve	Ships in 4 - 6 business days	$2.75
36			691304		Spring-Valve	Ships in 4 - 6 business days	$2.75
37			699661		Guard-Flywheel	Ships in 4 - 6 business days	$3.41
40			692194		Retainer-Valve	In stock 3 available	$3.36
45			690977		Tappet-Valve	Ships in 4 - 6 business days	$4.35
46			696813		Camshaft	Ships in 4 - 6 business days	$42.41
51			692555		Gasket-Intake	Ships in 4 - 6 business days	$2.64
55A			696710		Housing-Rewind Starter	Ships in 4 - 6 business days	$21.29
58			693389		Rope-Starter Note: Cut to Required Length	Ships in 4 - 6 business days	$4.73
60B			699334		Grip-Starter Rope	Ships in 4 - 6 business days	$8.75
65			699228		Screw	Ships in 4 - 6 business days	$2.04
65A			699851		Screw	Ships in 4 - 6 business days	$2.04
78			699205		Screw	Ships in 4 - 6 business days	$2.04
95			691636		Screw (Choke Valve)	Ships in 4 - 6 business days	$2.04
97			690024		Shaft-Throttle	Ships in 4 - 6 business days	$6.99
Fig #	Type #	Date Code	Part #	Img	Part Name	Availability	Price
98			398185		Kit-Idle Speed	Ships in 4 - 6 business days	$2.31
104			797622		Pin-Float Hinge	Ships in 4 - 6 business days	$2.20
108			796993		Valve-Choke	In stock 1 available	$2.86
109C			791957		Shaft-Choke	Ships in 4 - 6 business days	$15.51
117			690048		Jet-Main	Ships in 4 - 6 business days	$7.98
118			498977		Jet-Main	Ships in 4 - 6 business days	$7.98
121			792006		Kit-Carb Overhaul	In stock 16 available	$17.82
122			795643		Spacer-Carburetor	Ships in 4 - 6 business days	$5.34
125A			798917		Carburetor	Ships in 4 - 6 business days	$51.54
127			694468		Plug-Welch	Ships in 4 - 6 business days	$2.26
127A			691739		Plug-Welch	Ships in 4 - 6 business days	$2.26
130			691181		Valve-Throttle	Ships in 4 - 6 business days	$1.98
133			398187		Float-Carburetor	In stock 3 available	$7.54
134			398188		Kit-Needle/Seat Note: For 3 thru 6 HP engines	In stock 2 available	$4.95
137			693981		Gasket-Float Bowl	In stock 2 available	$2.86
Fig #	Type #	Date Code	Part #	Img	Part Name	Availability	Price
146			690979		Key-Timing	Ships in 4 - 6 business days	$2.09
155			698214		Plate-Cylinder Head	Ships in 4 - 6 business days	$9.52
186			692317		Connector-Hose	In stock 2 available	$4.40
187			791766		Line-Fuel Note: Cut to Required Length	In stock 11 available	$14.25
187A			791867		Line-Fuel	Ships in 4 - 6 business days	$8.36
187B			791874		Line-Fuel	In stock 3 available	$8.36
188			699479		Screw	Ships in 4 - 6 business days	$2.04
190			699220		Screw	Ships in 4 - 6 business days	$2.04
192			694543		Adjuster-Rocker Arm	Ships in 4 - 6 business days	$6.33
209			692571		Spring-Governor	Ships in 4 - 6 business days	$3.85
209A			691278		Spring-Governor	Ships in 4 - 6 business days	$2.53
219			693578		Gear-Governor	Ships in 4 - 6 business days	$9.79
220			691724		Washer (Governor Gear)	Ships in 4 - 6 business days	$2.64
222G			793109		Bracket-Control	Ships in 4 - 6 business days	$24.86
227			794367		Lever-Governor Contro	Ships in 4 - 6 business days	$6.27
Fig #	Type #	Date Code	Part #	Img	Part Name	Availability	Price
238			691300		Cap-Valve	Ships in 4 - 6 business days	$2.64
268			691025		Casing-Control Wire Note: Cut to Required Length	Ships in 4 - 6 business days	$19.36
269			691026		Wire-Control Note: Cut to Required Length	Ships in 4 - 6 business days	$11.28
270			691027		Nut (Control Wire Casing)	Ships in 4 - 6 business days	$6.00
271			691028		Lever-Control	Ships in 4 - 6 business days	$19.75
271A			698038		Lever-Control	Ships in 4 - 6 business days	$32.95
276			271716		Washer-Sealing	In stock 1 available	$2.42
281A	Type: Check type number and/or date code for this figure number.
	0917		793122		Panel-Control	Ships in 4 - 6 business days	$19.09
			793131		Panel-Control	Ships in 4 - 6 business days	$19.09
300	Type: Check type number and/or date code for this figure number.
	0917		797432		Muffler	Ships in 4 - 6 business days	$41.53
			794727		Muffler	Ships in 4 - 6 business days	$34.49
304			699598		Housing-Blower	Ships in 4 - 6 business days	$33.50
305			699481		Screw	Ships in 4 - 6 business days	$2.04
306A			695710		Shield-Cylinder	Ships in 4 - 6 business days	$16.23
307			699483		Screw	Ships in 4 - 6 business days	$2.04
Fig #	Type #	Date Code	Part #	Img	Part Name	Availability	Price
307A			699234		Screw	Ships in 4 - 6 business days	$2.04
309A			796238		Motor-Starter	Ships in 4 - 6 business days	$177.43
318			690370		Screw	Ships in 4 - 6 business days	$2.04
332A			792723		Nut	Ships in 4 - 6 business days	$2.64
333			796964		Armature-Magneto	Ships in 4 - 6 business days	$45.65
334			699477		Screw	Ships in 4 - 6 business days	$2.04
337	Type: Check type number and/or date code for this figure number.
			691043		Plug--Spark	Backorder: No ETA.	$5.45
			491055S		Plug-Spark	In stock 12 available	$3.85
356K			695731		Wire-Stop	Ships in 4 - 6 business days	$4.95
356N			794819		Wire-Stop	Ships in 4 - 6 business days	$7.15
358			791797		Gasket Set-Engine	Ships in 4 - 6 business days	$40.54
363			19203		Puller-Flywheel Note: Optional Accessory. 2-13/16 Bolt Spacing	Ships in 4 - 6 business days	$11.83
365			699484		Screw	Ships in 4 - 6 business days	$2.04
383			19576S		Wrench-Spark Plug	Ships in 4 - 6 business days	$4.95
427			694255		Nut (Control Bracket)	Ships in 4 - 6 business days	$1.93
Fig #	Type #	Date Code	Part #	Img	Part Name	Availability	Price
441			694262		Bracket-Oil Fill	Ships in 4 - 6 business days	$4.51
449			699234		Screw	Ships in 4 - 6 business days	$2.04
455			591302		Cup-Flywheel	Ships in 4 - 6 business days	$4.51
456			692299		Plate-Pawl Friction	In stock 5 available	$3.63
459			281505S		Starter Pawl-Ratchet Set Note: Includes 2 Starter Pawls	In stock 6 available	$2.48
472B			791958		Knob-Choke Shaft	Ships in 4 - 6 business days	$4.07
474A			793640		Alternator	Ships in 4 - 6 business days	$53.41
485			695755		Knob-Control	Ships in 4 - 6 business days	$5.28
493A			695744		Bracket-Mounting	Ships in 4 - 6 business days	$3.63
504			695383		Washer Set-Friction	Ships in 4 - 6 business days	$8.03
505			691251		Nut (Governor Control Lever)	Ships in 4 - 6 business days	$1.93
523	Type: Check type number and/or date code for this figure number.
	0100 0917		693618		Dipstick	Ships in 4 - 6 business days	$8.36
	0115		798468		Dipstick/Tube Assy	Ships in 4 - 6 business days	$10.34
524			281370S		Seal-Dipstick Tube	In stock 1 available	$3.08
528			793006		Hose-Primer	Ships in 4 - 6 business days	$4.46
Fig #	Type #	Date Code	Part #	Img	Part Name	Availability	Price
552			692346		Bushing-Gov Crank	Ships in 4 - 6 business days	$4.29
562			691119		Bolt (Governor Control Lever)	Ships in 4 - 6 business days	$2.31
597			691696		Screw (Pawl Friction Plate)	In stock 2 available	$8.03
598			220624		Shim-Endplay	Ships in 4 - 6 business days	$11.83
601			791850		Clamp-Hose	In stock 3 available	$2.09
604A			793134		Cover-Control	Ships in 4 - 6 business days	$14.08
608A			699335		Starter-Rewind	Ships in 4 - 6 business days	$43.40
613			697812		Screw	Ships in 4 - 6 business days	$3.08
613A			699481		Screw	Ships in 4 - 6 business days	$2.04
615			692576		Retainer-Gov Shaft	Ships in 4 - 6 business days	$2.70
616			692547		Crank-Governor	Ships in 4 - 6 business days	$4.46
619			699481		Screw	Ships in 4 - 6 business days	$2.04
621			692310		Switch-Stop	Ships in 4 - 6 business days	$2.59
632			692653		Spring/Link-Mech Gov	Ships in 4 - 6 business days	$3.85
633			693867		Seal-Choke/Thr Shaft	Ships in 4 - 6 business days	$2.59
Fig #	Type #	Date Code	Part #	Img	Part Name	Availability	Price
633A			691321		Seal-Choke/Thr Shaft	Ships in 4 - 6 business days	$2.31
635A			798619		Boot-Spark Plug	Ships in 4 - 6 business days	$3.52
663			699854		Screw, Hex Washer Head, Muffler Guard	Ships in 4 - 6 business days	$2.04
668			694257		Spacer (Control Bracket)	Ships in 4 - 6 business days	$2.59
676A			697816		Deflector-Muffler	Ships in 4 - 6 business days	$14.85
677A			699776		Screw	Ships in 4 - 6 business days	$2.04
689			691855		Spring-Friction	In stock 2 available	$1.87
692			690572		Spring-Detent	Backorder: No ETA.	$2.86
718			690959		Pin-Locating (Cylinder)	Ships in 4 - 6 business days	$1.87
731			794590		Hood-Snow	Ships in 4 - 6 business days	$24.53
741			695087		Gear-Timing	Ships in 4 - 6 business days	$6.16
742			692564		Retainer-E Ring	Ships in 4 - 6 business days	$2.26
746			790278		Gear-Idler	Ships in 4 - 6 business days	$5.34
773			694258		Retainer	Ships in 4 - 6 business days	$2.64
819			699233		Screw	Ships in 4 - 6 business days	$2.04
Fig #	Type #	Date Code	Part #	Img	Part Name	Availability	Price
823			791972		Screw	Ships in 4 - 6 business days	$2.26
824			696017		Gasket-Heat Shield	Ships in 4 - 6 business days	$7.21
830			694544		Stud-Rocker Arm	Ships in 4 - 6 business days	$2.75
832A	Type: Check type number and/or date code for this figure number.
	0917		699892		Guard-Muffler	Ships in 4 - 6 business days	$36.80
			699892		Guard-Muffler	Ships in 4 - 6 business days	$36.80
836B			791972		Screw	Ships in 4 - 6 business days	$2.26
836C			699234		Screw	Ships in 4 - 6 business days	$2.04
842			691031		Seal-O Ring (Dipstick Tube)	Ships in 4 - 6 business days	$2.53
847	Type: Check type number and/or date code for this figure number.
	0100 0917		693617		Dipstick/Tube Assy	Ships in 4 - 6 business days	$8.91
	0115		798468		Dipstick/Tube Assy	Ships in 4 - 6 business days	$10.34
851			493880S		Terminal-Spark Plug	Ships in 4 - 6 business days	$2.48
863			699849		Bracket-Muffler	Ships in 4 - 6 business days	$16.67
864			699232		Adapter-Muffler	Ships in 4 - 6 business days	$16.61
868			795440		Seal-Valve	Ships in 4 - 6 business days	$4.62
883			692237		Gasket- Exhaust	Ships in 4 - 6 business days	$3.30
Fig #	Type #	Date Code	Part #	Img	Part Name	Availability	Price
883A			691893		Gasket-Exhaust	In stock 1 available	$2.31
892			695747		Switch-Key	Ships in 4 - 6 business days	$7.81
914			699481		Screw	Ships in 4 - 6 business days	$2.04
914A			692557		Screw	Ships in 4 - 6 business days	$1.93
914B			697551		Screw	Ships in 4 - 6 business days	$1.87
930			696709		Guard-Rewind	Ships in 4 - 6 business days	$14.14
957			792647		Cap-Fuel Tank	In stock 5 available	$5.50
958			698180		Valve-Fuel Shut Off (Plastic)	Ships in 4 - 6 business days	$7.54
972			799863		Tank-Fuel	In stock 24 available	$63.31
975			796611		Bowl-Float	In stock 3 available	$5.12
976			790221		Primer-Carburetor	Ships in 4 - 6 business days	$5.56
977			792006		Kit-Carb Overhaul	In stock 16 available	$17.82
990			794696		Key Set	Ships in 4 - 6 business days	$3.30
993			694088		Gasket-Cyl Hd Plate	In stock 1 available	$3.03
996			794614		Shield-Carburetor	Ships in 4 - 6 business days	$11.06
Fig #	Type #	Date Code	Part #	Img	Part Name	Availability	Price
998	Type: Check type number and/or date code for this figure number.
			792928		Pipe-Oil	Ships in 4 - 6 business days	$6.71
			696683		Pipe-Oil	Ships in 4 - 6 business days	$9.90
1005			692592		Fan-Flywheel	Ships in 4 - 6 business days	$9.46
1005A			794273		Fan-Flywheel	Ships in 4 - 6 business days	$9.96
1011			794544		Tube-Vent	Ships in 4 - 6 business days	$4.73
1022			691890		Gasket-Rocker Cover	In stock 1 available	$3.96
1023			499924		Cover-Rocker	Ships in 4 - 6 business days	$12.05
1026			790287		Rod-Push	Ships in 4 - 6 business days	$3.63
1029			691230		Arm-Rocker	Ships in 4 - 6 business days	$3.85
1034			691343		Guide-Push Rod	Ships in 4 - 6 business days	$6.11
1054			280275		Tie-Cable	Ships in 4 - 6 business days	$3.03
1070			699201		Screw	Ships in 4 - 6 business days	$2.04
1095			791798		Gasket Set-Valve	Ships in 4 - 6 business days	$17.88
1119			699772		Screw	Ships in 4 - 6 business days	$2.04
1196			798785		Screw (Control Cover)	Ships in 4 - 6 business days	$1.93
Fig #	Type #	Date Code	Part #	Img	Part Name	Availability	Price
1196A			696685		Screw (Control Panel)	Ships in 4 - 6 business days	$2.04
1210			498144		Pulley/Spring Assembly	In stock 10 available	$15.51
1211			498144		Pulley/Spring Assembly	In stock 10 available	$15.51
1224			696824		Nut (Carburetor Primer)	Ships in 4 - 6 business days	$2.64
1230			699847		Stud	Ships in 4 - 6 business days	$2.92
1251			696699		Shield-Snow	Ships in 4 - 6 business days	$6.05
1252			699234		Screw	Ships in 4 - 6 business days	$2.04
1319			794467		Label-Warning	Ships in 4 - 6 business days	$7.21
1330			272147		Rep Man-1 Cyl OHV Vang	Ships in 4 - 6 business days	$24.37

Engine Parts

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Starter Pawl-Ratchet Set $2.48	Pulley/Spring Assembly $15.51
Key-Flywheel $2.15	Plug-Spark $3.85
Plate-Pawl Friction $3.63	Connector-Hose $4.40
Gasket-Float Bowl $2.86	Kit-Needle/Seat $4.95

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This article explains simple procedures to determine the correct fuel line routing for any 2-cycle engine carburetor.

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Replacing primer bulbs in small engines is one of the most common types of tool repairs, and this article explains professional steps for primer bulb replacement in two engine design types.

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Question: Primer Bubble

kevelme

Older 21 inch cut self prop walk behind

12a 359k402 347 375590

primer bubble, hole in bubble

Reply: Primer Bubble

WJA

Hello kevelme,

According to the Briggs and Stratton series number, 12A300. The primer for the carburetor is part number 790221. Item number 976 on page E of the parts diagram.

Hope this helps,
-WJA