Troy-Bilt E666M, 664D Sparkplugservice, Enginecleaning, Engineoil Service, AIR Cleanerservice

Sefore inspecting, cleaning or servicing the machine, shut off engine, wait for all moving parts to come to a complete stop, disconnect spark plug wire and move wire away from spark plug.

Remove the key from the keyswitch on units so equipped.

Failure to follow these instructions can result in serious personal injury or property damage.

5.On engineswith a dipstick, remove it, wipe it clean,and reinstall it finger-tight. Removethe dipstick andcheck the reading. Add oil (if required) to bring the level to the FULLmark. Do not overfill.

B. To Changethe Engine Oil:

Changethe engine oil as instructed in the separateEngineOwner'sManual.

ENGINECLEANING

The engine must be kept clean to assure smooth operation and to preventdamage from overheating. Referto the separate EngineOwner'sManual for specific repair and cleaning instructions. All inspections and services must be done with the engine shut off and cool to the touch.

Figure 5-3: Remove drain plug to drain transmissiongear oil (also remove oil fill plug and oil level checkplug).

ENGINEOIL SERVICE

Checkthe engine oil level before starting the engineeach day and check it after each 5 hours of continuous operation. Running the enginewhen it is low on oil will quickly ruin the engine.

It is recommended that you change the motor oil after every 10 hours of opera- tion and even sooner when operating in extremely dirty or dusty conditions. Refer

to the separateEngineOwner'sManual for detailed service instructions.

A. To Checkthe Engine Oil Level:

1.Move the tiller to a level areaand shut off the engine.

2.Level the engine by moving the Depth RegulatorLever up or down as needed.

3.Cleanthe areaaround the oil dipstick

or oil fill tube to prevent dirt from falling into the crankcase.

4.On engineswith an oil fill tube, remove the filler cap, add oil (if required) until it reachesthe top of the tube and reinstall the filler cap.

AIR CLEANERSERVICE

The engineair cleaner filters dirt and dust out of the air before it enters the carbure-

tor. Operatingthe engine with a dirty, clogged air filter can causepoor perfor- mance and damageto the engine. Never operate the enginewithout the air cleaner installed. Inspect and service the air cleaner more often if operating in very dusty or dirty conditions.

Servicethe air cleaneras instructed in the separateEngineOwner'sManual.

SPARKPLUGSERVICE

Inspectand clean or replacethe spark plug after every 100 operating hours or annually. Cleanthe plug and set the gap

as described in the separateEngine Owner'sManual.

In someareas, locallaw requires using resistor spark plugs to suppress ignition signals. If the enginewas originally equipped with a resistor spark plug, use the sametype for replacement.

SPARK ARRESTER SCREEN

SERVICE

If the engine muffler is equippedwith a spark arrester screen, removeand clean it according to the time intervals and instructions in the separateEngine Owner'sManual.

CARBURETOR/GOVERNOR CONTROLADJUSTMENTS

Operators shall not tamper with the engine governor settings on the machine; the governor controls the maximum safe operating speed to protectthe engine and all moving parts from damage caused by overspeed.

Authorized service shall be sought if a problemexists.

The carburetor was adjusted at the factory for best operating speed. Refer to the separateEngineOwner'sManualfor any adjustment information or seeyour authorizedengine service dealer.

The governor controls the maximum safe operating speedand protects the engine and all moving parts from damage caused by overspeeding. Do not tamper with the engine governor settings. Seek autho- rized service if a problem exists.

THROTTLE CONTROL ADJUSTMENT

If the enginedoes not respond to various throttle lever settings, refer to the sepa- rate EngineOwner'sManualfor service information or contact your local autho- rized engineservice dealer.