21A900

REF.

PART

 

REF.

PART

 

REF.

PART

 

NO.

NO.

DESCRIPTION

NO.

NO.

DESCRIPTION

NO.

NO.

DESCRIPTION

265

691024

Clamp−Casing

311

497608

Brush Set

387A

808656

Pump−Fuel

267

794904

Screw

333

795315

Armature−Magneto

404

691691

Washer

 

 

(Casing Clamp)

334

691061

Screw

 

 

(Governor Crank)

268

691025

Casing−Control Wire

 

 

(Magneto Armature)

415

690283

Plug

 

 

(Cut To Required

337

491055S

Plug−Spark

 

 

(Sump)

 

 

Length)

 

 

−−−−−− Note −−−−−−

415

794129

Plug

269

691026

Wire−Control

 

 

691043 Plug−Spark

 

 

(Cover/Retainer)

 

 

(Cut To Required

 

 

Used on Type No(s).

 

 

(Used After Code Date

 

 

Length)

 

 

0104, 0105, 0113,

 

 

07040800).

270

691027

Nut

 

 

0121, 0122, 0131,

431

697122

Elbow−Intake

 

 

(Control Wire Casing)

 

 

0146, 0147, 0149,

445

698413

Filter−Air Cleaner

271

691028

Lever−Control

 

 

0150, 0151, 0152,

 

 

Cartridge

276

Dz692255

Washer−Sealing

 

 

0155, 0156, 0157,

 

 

(Non Washable)

300

697048

Muffler

 

 

0158, 0167, 0169,

455

695113

Cup−Flywheel

 

 

Used on Type No(s).

 

 

0171, 0172, 0173,

 

 

Used on Type No(s).

 

 

0117, 0119, 0120,

 

 

 

 

0101, 0105, 0115,

 

 

 

 

0178, 0179, 0183,

 

 

 

 

0129, 0134, 0139,

 

 

 

 

0117, 0119, 0123,

 

 

 

 

0186.

 

 

 

 

0140, 0141, 0143,

 

 

 

 

0124, 0125, 0127,

 

 

356

697397

Wire−Stop

 

 

 

 

0144, 0145, 0146,

 

 

0128, 0134, 0136,

 

 

356A

398808

Wire−Stop

 

 

 

 

0147, 0149, 0150,

 

 

0138, 0139, 0141,

 

 

356B

697089

Wire−Stop

 

 

 

 

0151, 0153, 0154,

 

 

0142, 0144, 0145,

 

 

356C

399222

Wire−Stop

 

 

 

 

0159, 0161, 0162,

 

 

0147, 0149, 0150,

 

 

357

691483

Key−Drive Pulley

 

 

 

 

0166, 0168, 0172,

 

 

0151, 0153, 0157,

 

 

 

 

Used on Type No(s).

 

 

 

 

0176, 0178, 0180,

 

 

 

 

0159, 0161, 0162,

 

 

 

 

0156, 0171.

 

 

 

 

0184, 0185, 0186,

 

 

 

 

0166, 0168, 0170,

 

 

358

697151

Gasket Set−Engine

 

 

 

 

0187, 0188, 0190,

 

 

0171, 0176, 0179,

 

 

359

691077

Washer

 

 

 

 

0191, 0192, 0195,

 

 

0184, 0185, 0187,

 

 

 

 

(Ground Terminal)

 

 

 

 

0198, 0199.

 

 

 

 

0188, 0190, 0191.

 

 

363

19203

Puller−Flywheel

 

 

300A

697349

Muffler

456

695128

Plate−Pawl Friction

373

691612

Nut

 

 

Used on Type No(s).

459

281505S

Pawl−Ratchet

 

 

 

 

(Ground Terminal)

 

 

0115, 0133, 0136,

 

 

474A

696578

Alternator

 

 

383

89838S

Wrench−Spark Plug

 

 

0137, 0138, 0142,

 

 

(DC Only)

 

 

385

694476

Screw

 

 

 

 

0143, 0157, 0164,

 

 

Used on Type No(s).

 

 

 

 

(Fuel Pump)

 

 

 

 

0165, 0170, 0171,

 

 

 

 

0140, 0143, 0145,

 

 

385A

690297

Screw

 

 

 

 

0179.

 

 

0162, 0164.

 

 

 

 

(Fuel Pump)

 

 

300B

498984S

Muffler

 

 

474B

696459

Alternator

387

697090

Pump−Fuel

 

 

Used on Type No(s).

 

 

(Dual Circuit)

 

 

 

 

(Includes Mounting

 

 

 

 

0121, 0122, 0173.

 

 

 

 

Used on Type No(s).

 

 

 

 

Bracket)

 

 

304

698473

Housing−Blower

 

 

 

 

0101, 0104, 0105,

 

 

Used on Type No(s).

 

 

 

 

(Black)

 

 

 

 

0119, 0120, 0121,

 

 

−−−−−− Note −−−−−−

 

 

0115, 0121, 0122,

 

 

0122, 0123, 0124,

 

 

699085 Housing−

 

 

0133, 0137, 0139,

 

 

0125, 0128, 0131,

 

 

Blower

 

 

0140, 0141, 0142,

 

 

0147, 0150, 0152,

 

 

(Red)

 

 

0143, 0144, 0145,

 

 

0153, 0155, 0158,

305

697102

Screw

 

 

0147, 0149, 0150,

 

 

0159, 0169, 0172,

 

 

(Blower Housing)

 

 

0151, 0153, 0154,

 

 

0173, 0178, 0183,

305A

697103

Screw

 

 

0157, 0159, 0161,

 

 

0185, 0186, 0187,

 

 

(Blower Housing)

 

 

0162, 0164, 0165,

 

 

0191.

306

697359

Shield−Cylinder

 

 

0166, 0170, 0172,

 

 

 

307

691003

Screw

 

 

0173, 0178, 0179,

 

 

 

 

 

(Cylinder Shield)

 

 

0185, 0186, 0187,

 

 

 

309

693551

Motor−Starter

 

 

0188, 0189, 0190,

 

 

 

310

690323

Screw

 

 

0191, 0195, 0197,

 

 

 

 

 

(Starter Motor)

 

 

0199.

 

 

 

 

 

 

 

 

 

 

 

 

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

DIncluded 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.

5069−14

Assemblies include all parts shown in frames.

02/07/2008

14

Page 14
Image 14
Briggs & Stratton 21A900 265 691024, 311 497608, 387A 808656, 267 794904, 333 795315, 404 691691, 334 691061, 268 691025

21A900 specifications

Briggs & Stratton is a name synonymous with reliability and innovation in the small engine industry. Among its varied product lineup, the Briggs & Stratton 21A900 stands out for its performance and efficiency, making it an excellent choice for both homeowners and professionals.

The Briggs & Stratton 21A900 is a versatile engine specifically designed for lawn mowers and other outdoor power equipment. One of its hallmark features is its compact design, making it lightweight while still delivering robust performance. This makes it an ideal choice for residential lawn care, as well as for commercial landscaping operations.

One of the key technologies employed in the 21A900 is the Overhead Valve (OHV) design. This technology enhances engine efficiency by placing the valves in the cylinder head, allowing for better airflow and improved combustion. This results in increased power output and fuel efficiency, making it eco-friendlier compared to older engine designs.

In addition, the engine is equipped with a reliable starter mechanism, which enables easy starts even in cold conditions. The ReadyStart® system is a notable feature that eliminates the need for manual priming or choking, ensuring that users can get to work with minimal fuss.

The 21A900 also boasts a governor system designed to maintain engine speed under varying loads. This is particularly beneficial for lawn mowers, as it allows the engine to adjust power output automatically when encountering tougher grass or uneven terrain. As a result, users can enjoy consistent performance without constantly adjusting the throttle.

Durability is another significant characteristic of the 21A900. Briggs & Stratton engines are known for their rugged construction and the 21A900 is no exception. Built with high-quality materials, it promises long-lasting performance and reduced maintenance issues, which translates to lower total cost of ownership for users.

Maintenance is made easier with the inclusion of features such as a top-mounted oil fill and a convenient oil drain. This user-friendly design simplifies routine oil checks and changes, ensuring that the engine stays in top shape.

In summary, the Briggs & Stratton 21A900 engine combines advanced technologies, user-friendly features, and durable construction to deliver a powerful and efficient solution for outdoor power equipment. Whether used in a residential or commercial setting, the 21A900 ensures reliable performance for all lawn care needs. This engine exemplifies the commitment of Briggs & Stratton to quality and innovation, making it a trusted choice for users around the world.