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Service Manual
31AS250-700 Snow Thrower
NOTE: These materials are for use by trained technicians who are experienced in the service and repair of outdoor power
equipment of the kind described in this publication, and are not intended for use by untrained or inexperienced individuals.
These materials are intended to provide supplemental information to assist the trained technician. Untrained or inexperienced
individuals should seek the assistance of an experienced and trained professional. Read, understand, and follow all
instructions and common sense when working on power equipment. This includes the contents of the product's Operators
Manual, supplied with the equipment. No liability can be accepted for any inaccuracies or omission in this publication, although
care has been taken to make it as complete and accurate as possible at the time of publication. However, due to the variety of
outdoor power equipment and continuing product changes that occur over time, updates will be made to these instructions
from time to time. Therefore, it may be necessary to obtain the latest materials before servicing or repairing a product. The
company reserves the right to make changes at any time to this publication without prior notice and without incurring an
obligation to make such changes to previously published versions. Instructions, photographs and illustrations used in this
publication are for reference use only and may not depict actual model and component parts. © Copyright 2005 MTD Products
Inc. All Rights Reserved
MTD Products LLC - Product Training and Education Department
FORM NUMBER 769-01417
9/2004

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Summary of Contents for MTD 31AS250-700

  • Page 1 Instructions, photographs and illustrations used in this publication are for reference use only and may not depict actual model and component parts. © Copyright 2005 MTD Products Inc. All Rights Reserved...
  • Page 3: Table Of Contents

    TABLE OF CONTENTS General Information ....................1 Drive Belt Removal .....................1 Chute Removal ......................2 Flail Replacement .......................3 Shave Plate Servicing ....................3 Auger Removal ......................3 Shroud Cover Removal ....................4 Engine Removal ......................5 Fuel Tank Removal ....................5...
  • Page 5: General Information

    Remove the (5) screws using a 3/8 socket and ratchet wrench from the perimeter of the belt cover and remove the cover for access to the belt drive assembly. SNOW-THROWER MODEL 31AS250-700 SERIAL # 1E074B20022 Perimeter Screws GENERAL INFORMATION •...
  • Page 6: Chute Removal

    inside the belt cover. Inspect the bearing for ment cable can be checked for damage and wear or damage. operation. Return Spring Auger Pulley Idler Arm Idler Pulley Idler Arm Auger Engagement Cable and Spring Auger Belt Engine Drive Pulley 1.3.
  • Page 7: Flail Replacement

    2.3. Using a long blade screwdriver release the and turned around. upper and lower latch. VIEW FROM BEHIND UNIT UNDER COWLING Latches Shave Plate AUGER REMOVAL FLAIL REPLACEMENT 5.1. Using a 1” socket, remove the auger pulley. This is a left hand threaded nut. Remove clockwise. 3.1.
  • Page 8: Shroud Cover Removal

    5.2. Remove the bearing housing screws using a ing and thereby pushing out the bearing and 3/8” socket. bearing backup washer out the left side. LEFT SIDE Bearing Housing Cover Slider the auger to left pushes out bearing 5.3. Remove the auger bolt on the right side of the The auger can now be inspected for wear and or housing using a 7/16”...
  • Page 9: Engine Removal

    6.2. Using a 3/8” socket remove the three screws securing the front of the housing to the auger housing. Shroud Screws 6.3. Remove the four bolts (two on each side) secur- ing the sides of the shroud cover housing to the sides of the auger housing.

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