SECTION 6: OPERATION

NOTE: This unit has been shipped with oil in the engine. Check oil before starting engine.

GAS AND OIL FILL-UP

Check oil level and add oil if necessary. Service the engine with gasoline as instructed in the separate engine manual packed with your snow thrower. Read instructions carefully.

WARNING: Never fill fuel tank indoors, with the engine running or while engine is hot. Do not smoke when filling fuel tank.

TO START ENGINE

IMPORTANT: If unit shows any sign of motion (drive or augers) with the clutch grips disengaged, shut off engine immediately. Readjust as instructed in the FINAL ADJUSTMENTS on page 6.

Electric Starter

WARNING: The electric starter is equipped with a three-wire power cord and plug, and is designed to operate on 120 volt AC household current. It must be

properly grounded at all times to avoid the possibility of electric shock which may be injurious to the operator. Follow all instructions carefully. Determine that your house wiring is a three wire grounded system. Ask a licensed electrician if you are not certain. If your house wiring system is not a three- wire grounded system, do not use this electric starter under any conditions. If your system is grounded and a three hole receptacle is not available at the point your starter will normally be used, one should be installed by a licensed electrician.

When connecting the power cord, always connect cord to starter on engine first, then plug the other end into a three-hole grounded receptacle.

When disconnecting the power cord, always unplug the end from the three-hole grounded receptacle first.

1.Attach spark plug wire to spark plug. Make certain the metal loop on the end of the spark plug wire (inside the boot) is fastened securely over the metal tip on the spark plug. See Figure 13.

2.Make certain the auger and traction control clutch levers are in the disengaged (released) position.

3.Move throttle control up to FAST position. Insert ignition key into slot. Refer to Figure 12. Be certain it snaps into place. Do not turn key.

4.Rotate choke knob to OFF position.

Metal Loop

on Spark

Plug Wire

Rubber Boot

Figure 13

ENGINE WILL NOT START

UNLESS IGNITION KEY IS

INSERTED INTO IGNITION

SLOT IN CARBURETOR

COVER. DO NOT TURN

IGNITION KEY.

Figure 14

5.Connect power cord to switch box on engine. Plug the other end of power cord into a three- hole, grounded 120 volt AC receptacle.

6.Push starter button to crank engine. Refer to Figure 12. As you crank the engine, move choke knob to FULL choke position.

7.When engine starts, release starter button, and move choke gradually to OFF. If engine falters, move choke immediately to FULL and then gradually to OFF.

Recoil Starter

1.From the starting instructions for an Electric starter, follow step 1 through step 3.

2.Rotate choke knob to FULL choke position (cold engine start).

If engine is warm, place choke in OFF position instead of FULL.

3.Push primer button two or three times. Refer to Figure 12.

If engine is warm, push primer button once only.

NOTE: Always cover vent hole in primer button when pushing. Additional priming may be necessary for first start if temperature is below 15°F.

4.Grasp starter handle (refer to Figure 12) and pull rope out slowly, until it pulls slightly harder. Let rope rewind slowly.

5.Pull starter handle rapidly. Do not allow handle to snap back. Allow it to rewind slowly while keeping a firm hold on the starter handle.

6.Repeat step 4 and step 5 until engine starts.

7.As engine warms up and begins to operate evenly, rotate choke knob slowly to OFF position. If engine falters, return to FULL choke, then slowly move to OFF position.

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MTD 993 manual Operation, GAS and OIL FILL-UP, To Start Engine