Craftsman 987.889 owner manual Service and Adjustments, Sparkplug, Carburetor, Beltcoverremoval

Page 26

SERVICE AND ADJUSTMENTS

SPARKPLUG

Inspect the spark plug (Figure 5-4) after every 100 hours of operation. Be sure the gap is set at .030". Do not reuse plug if it is severely worn or damaged.

Best results are obtained with a new plug. See engine owner's manual to determine proper re- placement plug. Use of incorrect plug can cause engine damage.

NOTE: Do not clean spark plug in machines which use abrasive grit. Clean spark plug by scraping or

wire brushing, or washing with a commercial solvent.

.030"FeelerGauge

Figure 5.4: Spark plug.

CARBURETOR

The carburetor is adjusted at the factory. It should not need to be reset. If black exhaust is noted, check the air cleaner first. An over-rich mixture is usually caused by a poorly serviced or clogged air cleaner element, not an improperly adjusted carburetor. If readjust- ment is necessary, contact your

Sears Service Center.

BELTCOVERREMOVAL

The belt cover must be removed to perform several maintenance procedures.

To Remove Belt Cover

1.Stop engine, wait for all parts to stop moving, and disconnect spark plug wire.

2.Remove four screws (R, Figure 5-5) and remove cover.

To Reinstall Belt Cover

1. Position belt cover in place.

2.Secure with four screws re- moved earlier.

Oo not operate unit without belt cover installed. Failure

to follow this instruction

iWARNINGcould result in personalinjury or propertydamage.

Figure 5-5: Belt cover removal

BLADESPINDLEBELT REPLACEMENT

Follow this procedure to remove and replace the blade spindle

drive belt (remove blade drive belt first; see "Blade Drive Belt

Replacement").

1.Stop engine, wait for all parts to stop moving and disconnect spark plug wire.

2.Remove belt cover (see "Belt Cover Removar_.

3.Align sight holes (O, Figure

5-6) in pulley with spindle housing- to-mower deck mounting bolts (L).

4.Loosen screw (J) and rotate arm (K) to the rear.

5.Loosen four mounting bolts (L) securing spindle housing (beneath mower deck) to mower deck.

6.Slide spindle housing (with pul- ley attached) toward center.

7.Replace belt (N) with new belt.

.IMPORTANT: Set blades perpen-

dicular (90°) to each other.

8.Rotate arm (K) to move spindle housing and apply tension to belt. Belt cogs and pulley groovesmust mesh together. When applying moderate finger tension (8-12 Ibs.), belt should deflect approxi- mately 1/2" (12.7 mm) at (P), mid- point of deck.

9.Tighten bolts (L) to 15 ft.-Ibs.

(20.3 Nm). Tighten screw (J).

10.Blades must not contact deck. Check and readjust as needed.

11.Reinstall blade drive belt and

belt cover, removed earlier).

t

•p_0k. T

"

_":::-"::!'

L ./

.Figure 5-6:Blade Spindle Bell

26

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Contents Craftsman Safety Rules GeneraloperationNever refuel the machine indoors Safety RulesDo not Safety Rules NET Engine Weight Maintenance AgreementHorsepower Displacement This Warrantydoesnot CoverTable of Contents IndexMower Accessories and AI IachmentsGasCan GrassCatcherContents of Hardware Pack Tools NeededForAssembly AssemblyAssemblysteps Unpacking InstructionsAttachWheel DriveControl Rod Attachand AdjustGear Select LeverAttach ControlRods AttachOperatorPresence ControlRodAssembly Rear view of control rodsTestWheel Brake After Assemblingand BeforeUsingUnitCheckTire Pressure Knowyourequipment Safety StandardOperation OperatorPresenceControlGearSelect Lever OperationBladeDriveControl Blade DrivecontrolMulcher Cover Wheel Drive ControlCuttingHeight ControlLever Wheel DrivecontrolEngineRecoil Starter BeforeoperatingEngineThrottle Control THRoJiLECONTROLFill Fuel Tank BeforestartingengineAddMotor Oil Change oil after the first 2 operatTest Blade-Brake-Clutch ControlSystem AdjustMower CuttingHeightDisconnect spark plug Wire Select Mulchingor Side-DischargeMowingStartingandstoppingtheengine EngagingthebladesTo Stop the Wheels ToengagethewheelsMakingturns Tor Presence Control A, FigureMowingtipsandhints Bladebrakecontrol Test Engage the wheels with the Wheel Drive Control and driveLubrication Interval ServiceCustomer Responsibilities IntervalMotoroil EnginecleaningCustomer Responsibilities To Service FoamAir Filter A, -3 AIR CleanerserviceTippingmowerforservice ToRemove and Install FiltersSparkplug Service and AdjustmentsBladespindlebelt Replacement CarburetorToInstall Belt Bladedrivebelt ReplacementBladebrakereplacement To Remove BeltIt forward to take up slack in the belt Bladedrivebelt AdjustmentAdjustidlerin direction Ofarrowtotighten belt Bladedrivecontrollever Wheeldrivebeltreplacement Adjustment Install new belt shownToTestWheel Traction Wheeldrivebelt AdjustmentToAdjustWheel Drive Belt Remove cotter pin A, Figure 12A from upper end of WheelWheelbrakeadjustment Transmissionneutral AdjustmentBladeSharpening MowerbladesTo InspectBlades SharpenedBladeBlade Installation ServiceAdjustments Torqueto Mower Blade Washer BoltHTorqueto 35 Ft. LbsEngine StorageOFF-SEASONSTORAGE Engine OILPossiblecause TroubleshootingThrottle controlout of adjustment Broken,loose orworn beltsOperating and Safety Decals SafetydecalsCraftsman 8HP Model 987.889000 Repair Parts Handlebarand ConsoleassemblyDriveassembly 1100243 Part Description Qty1769904 1915933Craftsman 8HP Model 987.889000 Repair Parts FrontframeassemblyRef. Part Part Description Qty 11863931769895 149BLACKSPRAYPAINTCAN,13 OZ Torqueto Mowerdeckassembly158 320 LOCTITE242,0.02 OZ.TUBE 3181773523 19109171100244 1764140RJS Transaxleassembly Craftsman4-Cycle,8HP EngineModel 0100S 171 28424 BreatherElement 35262A1,364481 40009 305 35574 OilFinTube 35319 0ilSeal 126 3403640011 172 28425 ValveCover 173 35350 BrealherTube 416 34479ACraftsman 81-1PMODEL 987.889000 Repair Parts Craftsman4-Cycle,8HP EngineModel143.988000590701 Starter Handle Craftsiian 8HP Model 987.889000 Repair Parts¢p-.4 Page Page Crrftsmrn Form 1905122 3/98

987.889 specifications

The Craftsman 987.889 is a versatile and powerful tool that embodies the hallmark of durability and performance. Known for its exceptional build quality, this tool is designed to meet the needs of both amateur and professional users alike.

One of the main features of the Craftsman 987.889 is its robust motor. With a high-performance engine, it delivers consistent power and efficiency, making it capable of handling a wide range of tasks. Whether you are tackling heavy-duty applications or precision jobs, the motor ensures optimal performance.

The Craftsman 987.889 incorporates advanced technology that sets it apart in the market. Its innovative design includes ergonomic handles that provide a comfortable grip, reducing user fatigue during extended use. The tool also features an adjustable speed setting, allowing users to customize their experience based on the specific project at hand. This flexibility is invaluable for tasks that require precision or for those that demand high power.

Durability is another key characteristic of the Craftsman 987.889. Constructed from high-quality materials, this tool is built to withstand the rigors of tough job sites. The weather-resistant casing ensures that it can be used in various conditions, making it an ideal choice for outdoor projects or in diverse environments.

Safety is paramount with the Craftsman 987.889, which includes built-in safety features. The tool is equipped with an automatic shut-off function that activates if it overheats or experiences excessive strain. This not only protects the user but also extends the life of the tool.

In addition to its standout features, the Craftsman 987.889 also offers compatibility with a wide range of accessories and attachments, enhancing its versatility. Users can easily switch out components, making it suitable for different applications such as woodworking, metalworking, or DIY projects.

Overall, the Craftsman 987.889 is a powerful, reliable, and user-friendly tool that meets the demands of modern craftsmanship. Its combination of advanced technology, ergonomic design, and safety features make it an excellent addition to any toolbox, ensuring that users can tackle projects with confidence and efficiency. Whether for professional use or personal projects, the Craftsman 987.889 is a tool that delivers performance and reliability with every use.
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