Husqvarna ST 121E/96183000100 owner manual Inch 76 mm

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MAINTENANCE

15. Disconnect the spark plug wire from the spark plug (Figure 30).

16. Clean around the spark plug.

17. Remove the spark plug from the cylinder head.

1

Figure 30

1. Spark plug wire

IMPORTANT: Replace a cracked, fouled, or dirty spark plug. Do not clean the electrodes because grit entering the cylinder can damage the engine.

18.Set the gap on the plug to 0.030 inch (0.76 mm) (Figure 31).

0.030 inch

(0.76 mm)

Figure 31

19.Install the spark plug and torque it to 20–22 ft-lb (27–30 N-m).

20.Connect the spark plug wire to the spark plug (Figure 30).

21.Reattach primer bulb tube to primer bulb and electri- cal wires on back ignition switch of rear upper cover (Figure 29).

22.Set rear upper cover in place so the two screw holes line up with the rear lower cover and side covers (Figure 32).

23.Reattach two screws through the rear covers and into the clip on the side cover (Figure 27).

Figure 32

24.Remove top oil fill cap.

25.Set top cover in place and snap three top cover clips into the rear upper cover (Figure 28).

26.Reinstall top oil fill cap.

27.Reinstall two screws in the side covers that attach to the clips on the top cover.

28.Reinstall two screws in the plenum that attach to the top cover (Figure 27).

29.Reinstall discharge chute with the hardware removed in step 5.

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Contents 532 44 Safe Operation Practices for Walk-Behind Snow Throwers F6RTC Shut the Engine OFFKnow Your Snow Thrower Table of ContentsAssembly SetupInstalling the Handle Filling the Engine with Oil Installing the Discharge ChuteProduct Overview Product OverviewChecking the Engine Oil Level OperationOperation Filling the Fuel TankStarting the Engine Electrical cord can become damaged, causing a shock or fireStopping the Engine Adjusting the Discharge Chute and Chute DeflectorEngaging the Auger Blades Disengaging the Auger BladesClearing a Clogged Discharge Chute Preventing Freeze-up After UseOperating Tips Maintenance MaintenanceAdjusting the Control Cable Changing the Engine Oil Inspecting the Auger Blades/ Scraper BarServicing the Spark Plug Inch 76 mm Replacing the Auger V-Belt Storage StorageTroubleshooting TroubleshootingService Notes 1817 BRACKET.SUPPORT DCC Stamp BLK SUBASM.QUICK.ADJUST.COLDSUBASM.CONTROL.SHROUD COVER.HANDLE.LG.SHROUDPage CARRIAGE.BOLT PLENUM.MS498Washer BoltPage CHUTE.BASE.DCC CABLE.DCCCABLE.BRACKETDCC PLATE.CHUTE.BASE.PNT.MS431Page TOP.COVER KEY HousingCOVER.NON-DRIVE.SIDE.MS428 COVER.DRIVE.SIDE.MS428Page BELT-V.TRACTION SPACER.ENGINE.CRANKKEEPER.ENGINE.BELT PULLEY.ENG.TRACTION.3/4Page NUT.HEX.FLANGE.1/4-20.CTR.LOCK ENGINE.208.LCT.ESTRT.W/ALTFRAME.WELDMENT.SSST WHEEL.HUSQVARNASSST-Auger asm1 BLADE.AUGER BOLT.CARRIAGEPLATE.CENTER.BLADE HEX.NUT.1/4-20 Nylon LockingENGINE, LCT ASSEMBLY-SNOW Muffler ASSEMBLY-SNOWSpark Plug Boot KEY Switch AssyLimitations and Exclusions HOW to Obtain Service Consumer Wheeled Warranty Chart Qjlqh 7UDQVPLVVLRQ 06/14/2011 TH