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MTD Yard-Man 993 Series Operator's Manual

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OPERATOR'S
MANUAL
Model Series
993
Snow Thrower
IMPORTANT:
READ SAFETY
RULES AND INSTRUCTIONS
CAREFULLY
Warning:
This unit is equipped with an internal combustion engine and should not be used on or near any unimproved
forest-
covered, brush-covered or grass-covered
land unless the engine's exhaust system is equipped with a spark arrester meeting
applicable local or state laws (if any). If a spark arrester is used, it should be maintained in effective working order by the operator.
In the State of California the above is required by law (Section 4442 of the California Public Resources Code), Other states may have
similar laws, Federal laws apply on federal lands, A spark arrester for the muffler is available through your nearest engine authorized
service dealer or contact the service department,
P,O, Box 368022 Cleveland, Ohio 44136-9722,
MTD PRODUCTS
INC P.O. BOX 368022 CLEVELAND,
OHIO 44136-9722
FORM NO. 770-10278
PRINTED IN U.S.A.
(06/99)

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Summary of Contents for MTD Yard-Man 993 Series

  • Page 1 OPERATOR'S MANUAL Model Series Snow Thrower IMPORTANT: READ SAFETY RULES AND INSTRUCTIONS CAREFULLY Warning: This unit is equipped with an internal combustion engine and should not be used on or near any unimproved forest- covered, brush-covered or grass-covered land unless the engine's exhaust system is equipped with a spark arrester meeting applicable local or state laws (if any).

  • Page 2: Section 1: Finding Your Model Number

    SECTION 1: FINDING YOUR MODEL NUMBER This Operator's Manual is an important part of your new snow thrower. It will help you assemble, prepare and maintain your snow thrower. Please read and understand what it says. Before you start to prepare your snow thrower for its first use, please locate the model plate and copy the information from it in this Operator's Manual.

  • Page 3: Section 3: Important

    SECTION 3: IMPORTANT SAFE OPERATION PRACTICES WARNING: THIS SYMBOL POINTS OUT IMPORTANT SAFETY INSTRUCTIONS WHICH, IF NOT FOLLOWED, COULD ENDANGER THE PERSONAL SAFETY AND/OR PROPERTY YOURSELF AND OTHERS. READ AND FOLLOW INSTRUCTIONS IN THIS MANUAL BEFORE ATTEMPTING TO OPERATE YOUR SNOW THROWER. FAILURE TO COMPLY WITH THESE INSTRUCTIONS MAY RESULT IN PERSONAL INJURY.

  • Page 4: Maintenance And Storage

    • If the snowthrowershouldstart to vibrate Never operate machine high transport abnorma]ly, stop theengine a nd check i mmediately speeds on slippery surfaces. Look behind and use forthecause. V ibration i s generally a warning o f care when backing. trouble.

  • Page 5: Section 4: Set-Up Instructions

    SECTION 4: SET-UP INSTRUCTIONS AUGER SHEAR BOLTS -'1- 1A x 1 1"2" L n The augers are secured to the auger shaft with two shear bolts _;1;-0;90A'_ and hex lock nuts. If you hita foreign object or ice jam, the snow "...

  • Page 6: Final Adjustments

    FINAL ADJUSTMENTS Cable Guide Auger and Traction Control Clutch Adjustment To check the adjustment of either drive clutch, push forward on the clutch grip (depress rubber bumper). There should be slack in the cable. Release clutch grip. cable should straight, but not tight. Make certain you can depress the clutch grip against the handle completely.

  • Page 7: Section 5: Controls

    SECTION 5: CONTROLS TRIGGER LEVERS (See Figure 10) Traction Control/ Auger Chute The trigger levers are located on the underside Drive_ Tilt Clutch Control the handles and are used to help you steer your snow thrower. To turn right, squeeze the right trigger lever and guide the snow thrower to the right.

  • Page 8: Section 6: Operation

    SECTION 6: OPERATION NOTE: This unit has been shipped with oil in the Metal engine. Check oil before starting engine. GAS AND OIL FILL-UP Plug Wire Check oil level and add oil if necessary. Service the Rubber Boot engine with gasoline as instructed in the separate engine manual packed...

  • Page 9: Section 7: Adjustments

    TO STOP ENGINE TIRE CHAINS Tire chains should be used whenever extra traction Run engine for a few minutes before stopping to is needed. help dry off any moisture on the engine. To help prevent possible freeze-up of starter, OPERATING TIPS proceed as follows: NOTE:...

  • Page 10: Section 8: Lubrication

    SHIFT ROD ADJUSTMENT CARBURETOR ADJUSTMENT To adjust the shift rod, remove the cotter pin which WARNING: adjustments secures the shift rod to the shift lever. For proper made to the engine while the engine is adjustment, refer to FINAL ADJUSTMENTS on page running (e.g.

  • Page 11: Section 9: Maintenance

    SECTION 9: MAINTENANCE BELT REMOVAL AND REPLACEMENT wire and ground against engine WARNING: Disconnect the spark plug WARNING: Remove spark plug before performing repairs wire from the spark plug and ground. maintenance. Drain gasoline from the fuel tank, place a piece of plastic film underneath AUGERS the gas cap to prevent gasoline...
  • Page 12 " Brake Pulley Bracket _ uger Control uelt Bolt Pull, Spring Figure 18 Auger Idler Figure 21 Proper Adjustment With the auger clutch lever in the disengaged position the top surface of the new BrakeJ belt should be even with the outside diameter of the Bracket pulley.
  • Page 13 Changing Friction Wheel Shift Rod The rubber on the friction wheel is subject to wear Sprocket Assembly and should be checked after 25 hours of operation, periodically thereafter. Replace friction Friction Wheel wheel rubber if signs of excessive wear or cracking are found.

  • Page 14: Shooting Guide

    SECTION 11: TROUBLE SHOOTING GUIDE Corrective Action Trouble Possible Cause(s) Engine fails to start Fuel tank empty, or stale fuel. Fill tank with clean, fresh gasoline. Fuel will not last over thirty days unless a fuel stabilizer is used. Blocked fuel line. Clean fuel line.
  • Page 15 SECTION 12: Illustrated Parts Model 993 Ref. Part No. Description Qty. 731-1364 Halogen Lamp Housing 710-1240 Phillips Pan Head Screw M 4 x 16 712-0271 Hex Sems Nut 1/4-20 725-1669 Lamp/Lens Housing Ass'y 629-0059 Halogen Light Wire Harness 725-1658 #890 Halogen Bulb 710-0451 Cardage Bolt 5/16-18 x .75 710-1003...
  • Page 16 Model 993 "66 "37...
  • Page 17 Please add th_ applicable color code, wherever needed, 1o the part number to order a replacement part For instance, if a part, numbered 700-xxxx, is painted yard-man green, the part numbel to order would be 700-xxxx-0665. Yard-Man Green: 0665 Yard-Man Yellow: 0674...
  • Page 18 Model 993 \\11...
  • Page 19 Please add th_ applicable color code, wherever needed, 1o the part number to order a replacement part For instance, if a part, numbered 700-xxxx, is painted yard-man green, the part numbel to order would be 700-xxxx-0665. Yard-Man Green: 0665 Yard-Man Yellow: 0674...
  • Page 20 Model 993...
  • Page 21 Model 993 Qty. Ref. Part No. Ref. Pad No. Description Qty. Description 629-0071 Extension Cord 10 Ft. 714-0118 Square Key 1/4 X 1.5 710-0502A Hex L-wash Tt Scr 3/8-16 X 1.25 732-0303 Extension Spring .38 OD X 3.18 L 710-0607 Hwhd 5/16-18 X 1/2 Thd Roll Zn 736-0169 L-wash 3/8...
  • Page 22 Model 993 <:...
  • Page 23 Please add th_ applicable color code, wherever needed, 1o the part number to order a replacement part For instance, if a part, numbered 700-xxxx, is painted yard-man green, the part numbel to order would be 700-xxxx-0665. Yard-Man Green: 0665 Yard-Man Yellow: 0674...
  • Page 24 MANUFACTURER'S LIMITED WARRANTY FOR: YaRD-MaNY,f/ b. Routine maintenance items such as lubricants, filters, The limited warranty set forth below is given by MTD blade sharpening and tune-ups, or adjustments such PRODUCTS INC ("MTD") with respect to new merchandise as brake adjustments, clutch adjustments or deck purchased and used in the United States, its possessions...

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