Briggs & Stratton 21B900 691178, 792305, 690227, Note −−−−−− 691148, 498030, Piston, 695130, 95A

								21B900
REF.	PART		REF.	PART		REF.	PART
NO.	NO.	DESCRIPTION	NO.	NO.	DESCRIPTION	NO.	NO.	DESCRIPTION
24	222698S	Key−Flywheel	51KDzΔ692137 Gasket−Intake			81	691178	Lock−Muffler Screw
25	792305	Piston Assembly	53	690227	Stud	93	D690602	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	Ring Set	56	695129	Pulley−Starter
						95	D691636	Screw
		(Standard)	57	695131	Spring−Rewind Starter
								(ThrottleValve)
		−−−−−− Note −−−−−−	58	695132	Rope−Starter
								(Walbro)
		792643 Ring Set	60	493926	Grip−Starter Rope
						95A	D690718	Screw
		(.020” Oversize)	65	690759	Screw
27	698469	Lock−Piston Pin			(Rewind Starter)			(Throttle Valve)(Nikki)
		(Used After Code Date			(Used After Code Date	98	495800	Kit−Idle Speed
		02100300).			07040800).			(Walbro)
		−−−−−− Note −−−−−−			−−−−−− Note −−−−−−	98A	695408	Kit−Idle Speed
		698138 Lock−Piston			697725 Screw			(Nikki)
		Pin			(Rewind Starter)	104	D690525	Pin−Float Hinge
		(Used Before Code			(Used Before Code			(Walbro)
		Date 02100400).			Date 07040900).
						104A	D694918	Pin−Float Hinge
28	697099	Pin−Piston	73		Screen−Rotating
								(Nikki)
29	791633	Rod−Connecting			(Service With Flywheel
						105 D231855S		Valve−Float Needle
		(Standard)			Fan 794440)
								(Walbro)
		−−−−−− Note −−−−−−			(Used Before Code
						105A	D696136	Valve−Float Needle
		697262 Rod−			Date 07040900).
								(Nikki)
		Connecting	73A	794437	Screen−Rotating
						106	D690577	Seat−Inlet
		(.020” Undersize)			(Used After Code Date
		(Used Before Code			07040800).			(Walbro)(Gravity Feed)
		Date 05040400).	74	697897	Screw			−−−−−− Note −−−−−−
32	791118	Screw			(Rotating Screen)			D691780 Seat−Inlet
		(Connecting Rod)			(Used Before Code			(Walbro)(Pump Feed)
33	695760	Valve−Exhaust	75	690582	Date 07040900).			Used on Type No(s).
34	695761	Valve−Intake			Washer			0015, 0016, 0022,
35	691279	Spring−Valve			(Flywheel)
								0026, 0028, 0029,
		(Intake)	78	691003	Screw
								0036, 0038, 0117,
36	691279	Spring−Valve			(Flywheel Guard)
								0124, 0127, 0129,
		(Exhaust)	78A	690364	Screw
								0140, 0152, 0156,
37	697352	Guard−Flywheel			(Flywheel Guard)
								0157, 0194, 0197,
37A	697626	Guard−Flywheel			(Electric Start)
								0202.
		(Electric Start)			Used on Type No(s).
						108	691227	Valve−Choke
		Used on Type No(s).			0015, 0016, 0020,
		0015, 0016, 0020,			0022, 0114, 0116,			(Walbro)
		0022, 0114, 0116,			0117, 0121, 0142,	108A	698773	Valve−Choke
		0117, 0121, 0142,			0192, 0194, 0202.			(Nikki)
		0192, 0194, 0202.

42499586 Keeper−Valve

43691968 Slinger−Governor/Oil

45690564 Tappet−Valve

46793880 Camshaft

50697361 Manifold−Intake

50B 795756 Manifold−Intake Used on Type No(s). 0015G1, 0016G1, 0026G1, 0029G1, 0036G1, 0153, 0154, 0159, 0202G1, 0203.

KIncluded in Engine Gasket Set−Ref. No. 358.

D Included in Carburetor Overhaul Kit−Ref. No. 121 or 121A.

zIncluded in Carburetor Gasket Set−Ref. No. 977 or 977A. Δ Included in Valve Gasket Set−Ref. No. 1095.

Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.

5036−11 Assemblies include all parts shown in frames. 06/18/2008

11