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MTD 380 Service Manual

Two-stage snow thrower
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See also: Operator's Manual
Service Manual
Model 380 Two-Stage 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 769-01419
9/2004

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Summary of Contents for MTD 380

  • Page 1 © Copyright 2005 MTD Products Inc. All Rights Reserved MTD Products LLC - Product Training and Education Department FORM NUMBER 769-01419...

  • Page 3: Table Of Contents

    Table of Contents TOPIC PAGE Skid Shoe Adjustment ..........1 Skid Shoe Removal and Replacement .

  • Page 5: Skid Shoe Adjustment

    Model 380 Two Stage Snow Thrower Service Manual Model 380 Two Stage Snow Thrower MODEL 380 TWO STAGE SNOW THROWER NOTE: Some procedures require you to tip the snow thrower up on the front of the auger hous- ing. If there is fuel in the gas tank, place a piece of plastic wrap over the gas tank opening and screw the cap back on the tank tightly.

  • Page 6: Skid Shoe Removal And Replacement

    Model 380 Two Stage Snow Thrower 1.1. Place a piece of carton cardboard under the AUGER BELT shave plate. See Figure 1.1. 4.1. Using a 5/16” socket, remove the screw securing the right side of the belt cover to the drive hous- ing.

  • Page 7: Auger Shear Bolts

    Model 380 Two Stage Snow Thrower 4.4. Squeeze the auger control bail to release the 4.8. Pivot the transmission forward to release pres- tension on the auger belt brake; remove the belt. sure on the drive belt and remove the belt from See Figure 4.4.

  • Page 8: Wheel Removal

    Model 380 Two Stage Snow Thrower spring to increase the tension on the auger belt 8.1. Remove the wheels as described in section 7. when it is engaged. See Figure 6.3. 8.2. Remove the cotter pin and clevis pin securing the 70T gear to the axle shaft.

  • Page 9: Auger Pulley Removal

    Model 380 Two Stage Snow Thrower 9.3. Remove the tension spring attached to the frame 9.7. Remove the cotter pins and flat washers secur- and transmission. See Figure 9.3. ing the transmission mounting axle to the drive housing. See Figure 9.7.

  • Page 10: Auger And Impeller Removal

    Model 380 Two Stage Snow Thrower 10.1. Using a ½” socket and ratchet, remove the lock 11.3. Remove the Auger Pulley. Refer to Section 10. bolt securing the auger pulley to the auger gear- 11.4. Using a 1/2” socket, remove the three hex nuts box drive shaft.

  • Page 11: Spiral Assembly Removal

    Model 380 Two Stage Snow Thrower 11.7. Remove the complete auger assembly from the SPIRAL ASSEMBLY REMOVAL auger housing. See Figure 11.7. 12.1. Remove the auger and impeller assembly from the housing. Refer to Section 11. 12.2. Using a 1/2” socket and a box end wrench,...

  • Page 12: Impeller Removal

    Model 380 Two Stage Snow Thrower IMPELLER REMOVAL REDUCER TRANSMISSION 13.1. Remove the auger and impeller as described in 14.1. The reducer can be serviced. It can also be pur- Section 11. chased as an assembly. See Figure 14.1. 13.2. Using a 3/16 punch and hammer, remove the...

  • Page 13: Auger Cable Replacement

    Model 380 Two Stage Snow Thrower 15.2. Separate the housing halves using a putty knife. 16.2. Spin the inner nut off the end of the control cable See Figure 15.3. and slide the cable out of the bracket. 15.3. Inspect all internal parts for wear or damage.

  • Page 14: Directional Discharge Chute Assembly Removal

    Model 380 Two Stage Snow Thrower DIRECTIONAL DISCHARGE CHUTE ASSEM- 17.3. Pry the lower inner clasp to release the collar. BLY REMOVAL. See Figure 17.3. 17.1. Turn the discharge chute until it faces to the right. See Figure 17.1. Lower Clasp Figure 17.3...

  • Page 15: Engine Pulleys

    Model 380 Two Stage Snow Thrower 18.4. Remove the auger pulley as described in Sec- ENGINE PULLEYS tion 10. NOTE: If there is reason to disassemble the 18.5. Remove the auger and impeller as described in engine pulleys, pay attention to the shape and Section 11.

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