Sears Learn About the 28N707 Carburetor for Your Lawn Mower

Page 52

REPAIR PARTS

15 HP 42" TRACTOR - - MODEL NUMBER 917.257643

BRIGGS & STRATTON ENGINE - MODEL NUMBER 28N707, TYPE NUMBER 0160-01

KEY

PART

 

 

 

 

 

KEY

PART

 

 

 

NO.

NOo

DESCRIPTION

 

 

 

NO.

NO.

DESCRIPTION

 

1

496412

Cylinder Assembly

 

52

272569

*** Gasket, Carburetor

 

2

399265

Bearing,

Cylinder

 

 

 

 

(Elbow to Cylinder)

_.

3

391086

* Seal, Oil

 

 

 

53

94637

Stud,

Carburetor Mounting

"

5

495858

Head, Cylinder

 

 

 

75

224061

Washer; Spring

 

7

272614

*** Gasket, Cylinder Head

78

94832

Screw, Pan Head

 

8

495735

Breather Assembly

 

95

94098

** Screw, Throttle

 

9

27803

* Gasket, Valve Cover

98

495800

Screw, idle Speed

 

10

94621

Screw, Seres

 

 

 

104

231789

** Pin, Float Hinge

 

11

281246

Tube, Breather

 

 

 

105

231855

** Valve

Float

 

12

271916

* Gasket,

Crankcase

Cover, .015"

t06

231854

** Seat,

inlet Valve

 

 

271997

* Gasket,

Crankcase

Cover, .005"

108

224540

Valve, Choke

 

 

271996

*Gasket,

Crankcase

Cover, .009"

117

231858

** Jet, Needle Valve

 

13

94728

Screw, Cylinder Head

118

495932

Valve, Needle

 

15

94239

Plug, Oil Drain

 

 

 

121

495799

Carburetor Overhaul Kit

 

16

495162

Crankshaft

 

 

 

123

94616

Screw, Elbow Mounting

 

18

94t 96

Timing Gear Key

 

 

125

495935

** Carburetor Assembly

 

494238

Base, Engine

 

 

 

127

- - -

Plug, Welch (Sold in Kit Only)

20

291675

-*Seal, Oil

 

 

 

130

224539

Valve, Throttte

 

22

94624

Screw, Sems,

Base Mounting

131

494379

Shaft and Lever, Throttle

 

23

492326

Flywheel and Ring Gear Assembly,

133

494381

Float, Carburetor

 

 

 

Magneto

 

 

 

137

281165

.... Gasket, Float Bowl

 

24

222698

Key, Flywheel

 

 

 

138

281164

**** Washer, Bowl

 

25

495860

Piston Assembly,

Standard Size

141

495931

Shaft and Lever, Choke

 

 

495977

Piston Assembly,

.010" Oversize

142

231859

** Nozzle, Carburetor-

 

 

495978

Piston"Assembly,

_020",,Oversize

147

231794

** Pilot, Jet

 

 

495979

Piston Assembly,

.030 Oversize

164

214053

Elbow, Carburetor

 

26

495854

Ring Set, Piston, Standard Size

166

94555

Stud, Rocker Arm

 

 

495852

Ring Set, Piston,

.010',iOversize

17t

281051

Nut, Air'Cleaner Mounting

 

 

495851

Ring Set, Piston,

..020 Oversize

187

393815

Line, Fuel (11" Long, Cut to Suit)

 

495855

Ring Set, Piston, .030" Oversize

188

94627

Screw, Sems

 

27

260924

Lock, Piston Pin

 

 

192

492160

Screw Assembly, Rocker Arm

28

29969"1

Pin Assyo, Piston, Standard Size

201

262767

Link, Governor

 

 

391286

Pin Assy., Piston, .005" Oversize

209

260695

Spring, Governor

 

29

494504

Rod Assembly,

Connecting

216

262766

Link, Choke

 

 

495490

Rod Assembly,

Connecting,

219

490815

Gear',Governor

 

 

 

.020" Undersize

Crankpin Bore.

222

495611

Plate, Governor Control

 

32

94695

Screw,

Hex Washer Head, 1-57/64

224

94729

Screw, Seres, Air Cleaner

 

32A

94648

Screw, Hex Washer Head, 1-5/8

225

231058

Crank, Governor

 

33

495856

Valve, Exhaust

 

 

 

 

 

 

 

34

495857

Valve, Intake

 

 

 

*

Included in Gasket Set (495993)

 

35

262811

Spring,

Valve

 

 

 

**

lnciuded in Carburetor Kit (495799)

 

37

224502

Guard,

Flywheel

 

 

***

lncluded in both Gasket Set (495993) and

 

40

224641

Retainer, Valve Spring

 

Valve Overhaul Kit (495992)

 

45

262411

Tappet,

Valve

 

 

 

****

included in Gasket Set (495993), Carburetor Kit

46

494433

Gear, Cam

 

 

 

 

(495799) and Carburetor Gasket Set (494385)

51

272465

**** Gasket,

Carburetor

(Carburetor to

 

 

 

 

 

 

 

Elbow)

(Also Included in Gasket

NOTE: AUcomponent dimensions given in U.S. inches

 

 

Set, Part Number 495993)

 

1 inch = 25.4 mm

 

 

52

Image 52
Contents Model Safety Rules Safe Operation Practices for Ride-On MowersModel Limited 90=DAY Warranty on BatterySerial Number Date of Purchase Index Performance MaintenanceEngine Contents of Hardware Pack Unpackcarton Attach Steering Wheel See FigTo Roll Tractor OFF Skid See Fig WheelConnect Battery See Figs Install Seat See FigNegave BoltCheck Tire Pressure Check Deck LevelnessCheck for Proper Position of ALL Belts Check Brake SystemAssembly Install Mulcher Plate See FigsTo Convert to Bagging or Discharging Guard from mower, Raise and hold OperationKnow Your Tractor Heightadjustm ENT Knob Usedtoadjustthe mower cutting heighLAttachment Clutch Lever Used to engage HOW to USE Your Tractor Before Starting the Engine To Operate Mower See FigTo Transport ADD GasolineWhen starting engine for the first time orif engine has run OperationMowing Tips To Start Engine See FigGeneral Recommendations Before Each USEBrake Operation TiresBlade Care Blade Removal See FigTo Clean Battery and Terminals BeltsTransaxle Cooling LubricationClean AIR Screen See Fig To Service PRE-CLEANERCustomer R AIR Filter See FigSpark Plugs MufflerIN-LINEFUEL Filter See Fig Service and Adjustments To Install Mower See FigTractor To Remove Mower See FigAdjustments ServiceTo Level Mower Housing Adjustm To Adjust Brake See FigTo Replace Motion Drive Belt See Fig To Replace Mower Blade Drive BeltTo Adjust Steering Wheel Alignment To Start Engine with a Weak Battery See FigFront Wheel TOE-IN/CAMBER To Remove Wheel for RepairsICE and Adjustments To Adjust Throttle Control CableEngine To Replace Headlight BulbTo Adjust Carburetor See Fig Final SettingImportant Damage to the Needle Valve Preliminary SE-I-FINGBattery StorageFuel System Engine OILProblem Cause CorrectionTroucoting Points ProblemcauseCorrection Schematic Ignition SwitchWiring Insulated Clips NON-REMOVABLE ConnectionsRepair Parts ElectricalBulb, Light Electrical KEY Part DescriptionKey, Ignition Chassis and Enclosures 128Chassis Andenclosures KEY Part NO, NON DescriptionDrive Drive KEY Part NO. no KEY Part DescriptionSteering Assembly Steering Assembly KEY Part NO. no Spacer, Split 28 x Seat Assembly140552 Wheels & Tires DecalsFront Tire Engine 2122 29\ 2OKEY Part NO. NO. Description Line, FuelMower Lift 15 HP 42 Tractor - Model Number161718 15 HP 42 TRACTOR-- Model Number Mower Deck 103138440 KEY Part NO. noWith Nibs Dana Transaxle Model Number 2732 521920 x 105941X868A Briggs & Stratton Engine Model Number 28N707, Type NumberRequires Specialtools To INSTALL, see Repair 127 138 106 987 95 117 6346B 104 1022 105 147Valve Overhaul KIT Carburetor523 467 872445 224 668 304801 Eo2 Eo3265 209 601Briggs & Stratton Engine Model Number 28N707, Type Number NOo399265 127394358 727Page Suggested Guide for SiGHTiNG Slopes for Safe Operation If YOU Need Repair Service Or Parts Owners ManualInformation Part Description

917.257643 specifications

The Sears 917.257643 is a notable riding lawn mower model that represents a blend of performance, reliability, and user-friendly features. This machine is designed to cater to homeowners seeking a robust solution for lawn care. Among its main features, the 917.257643 boasts a powerful engine that provides sufficient horsepower to handle even tougher mowing conditions. This ensures that it can tackle both small and expansive yards with ease.

One of the essential characteristics of the Sears 917.257643 is its cutting system. It typically comes equipped with a wide cutting deck, which allows for a broader swath of grass to be cut in a single pass. This feature not only enhances efficiency but also reduces the overall mowing time. The adjustable cutting height is another significant advantage, allowing users to select the desired grass length based on seasonal requirements or personal preference.

In terms of technology, the Sears 917.257643 incorporates ease of operation into its design. The intuitive control panel is easy to understand, featuring straightforward levers and buttons that allow for smooth operation. Additionally, the mower is equipped with a reliable hydrostatic transmission, providing seamless speed adjustments without the need for manual gear changes. This feature allows users to focus more on mowing rather than managing speed.

The construction of the Sears 917.257643 is robust, designed to withstand the rigors of regular use. Its durable housing and high-quality materials contribute to the longevity of the mower. Furthermore, it often includes ergonomic seating, which adds to the comfort of the operator during longer mowing sessions.

Another characteristic that stands out is its maintenance features. The mower is designed for easy access to key components, allowing for straightforward maintenance routines. Regular upkeep ensures that the lawn mower remains in excellent working order, which is crucial for long-term performance.

In summary, the Sears 917.257643 is more than just a lawn mower; it is a reliable partner in lawn maintenance. Its combination of powerful performance, advanced technologies, and user-centric features makes it a favored choice among homeowners looking to keep their lawns in pristine condition. Its durable build and ease of maintenance further enhance its appeal, ensuring that users can enjoy a well-groomed lawn for years to come.