Troy-Bilt TB2000 manual Replacing the Spark Plug

Page 17

Maintenance (continued)

If after checking the fuel mixture and cleaning the air filter the engine still will not idle, adjust the idle speed screw as follows.

1.Start the engine and let it run at a high idle for a minute to warm up.

2.Release the throttle trigger and let the engine idle. If the engine stops, insert a small phillips or flat blade screwdriver into the screw next to the air filter cover (Fig. 6-12). Turn the idle speed screw in, clockwise, 1/8 of a turn at a time (as needed) until the engine idles smoothly.

NOTE: The cutting attachment should not rotate when the engine idles.

3.If the cutting attachment rotates when the engine idles, turn the idle speed screw counterclockwise 1/8 of a turn at a time (as needed), to reduce idle speed.

Checking the fuel mixture, cleaning the air filter, and adjusting the idle speed screw should solve most engine problems.

If not and:

The engine will not idle,

The engine hesitates or stalls on acceleration,

There is a loss of engine power,

have the carburetor adjusted by an authorized service dealer.

REPLACING THE SPARK PLUG

Use a Champion RCJ6Y spark plug (or equivalent). The correct air gap is 0.025 inch (0.655 mm). Remove the plug after every 50 hours of operation and check its condition.

1.Stop the engine and allow it to cool. Grasp the plug wire firmly and pull the cap from the spark plug.

2.Clean dirt from around the spark plug. Remove the spark plug from the cylinder head by turning a 5/8 inch socket counterclockwise.

3.Replace cracked, fouled or dirty spark plug. Set the air gap at 0.025 inch (0.655 mm) using a feeler gauge (Fig. 6-13).

Do not sand blast, scrape, or clean electrodes. Grit in the engine could damage the cylinder.

4.Install a correctly gaped spark plug in the cylinder head. Tighten by turning the 5/8 inch socket clock- wise until snug.

If using a torque wrench torque to; 110-120 in.•lb. (12.3-13.5 N•m). Do not over tighten.

0.025 inch

(0.655 mm)

Fig. 6-13

17

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Contents Owner/Operator Manual Cycle Trimmer Introduction Table of ContentsAccessory 181696 Spark Arrestor Kit Service InformationSymbol Meaning SafetySafety Warnings for GAS Trimmers Before OperatingOperation Other Safety WarningsWhile Operating Symbol Meaning Safety Alert Symbol Safety and International SymbolsFor Service INFORMATION, Call Unleaded FuelHOT Surface Warning Symbol Meaning ON/OFF Stop ControlSharp Blade Choke Control Do not USE BladesApplications Know Your UnitInstalling the Cutting Attachment Shield AssemblyInstalling and Adjusting the D-HANDLE Using Fuel Additives Using Blended FuelsOil and Fuel Definition of Blended FuelsStopping Instructions OperationStarting Instructions Tips for Best Trimming Results Adjusting Trimming Line LengthHolding the Trimmer Decorative Trimming Maintenance ScheduleWhen Maintenance Needed GO to Winding the Existing Inner Reel Line InstallationGo To for Membrane Line Installation Replacement Parts See Accessories / Replacement Parts on Installing a Prewound ReelPawl Replacement Carburetor Adjustment AIR Filter MaintenanceCleaning the Air Filter Clean Air FilterReplacing the Spark Plug Cleaning ACCESSORIES/REPLACEMENT PartsStorage Long Term StorageT I O N U S EU S EA C T I O N U S E T I O NEngine SpecificationsPage MTD Southwest Inc