MTD Flurry 1400 Manuel de service

Professional Shop ManualTroy-Bilt Snow Flurry 1400NOTE: These materials are for use by trained technicians who are experienced in the service and repa

Snow Flurry 14006Kirchhoff’s current lawKirchhoff’s current law deals with nodes. Nodes are the junction of two or more wires or the junction of a wir

Electrical7Electric circuitsAll circuits have some basic rules that must be followed:1. All circuits must have at least one voltage source. It could b

Snow Flurry 14008Parallel• Parallel circuits are wired so that current has multiple paths to follow. See Figure 2.5.Series/parallel• Series/parallel c

Electrical9Circuit failuresThere are three types of failures that can occur in an electrical circuit:1. Shorts2. Opens3. Increased resistanceShortsA s

Snow Flurry 140010Digital multimeterDigital Multi Meters or DMMs are the most useful tool to trouble shoot any electrical system. Depending on the mod

Electrical11SwitchIn order to bench test a switch, the way it operates must be known. All switches either open a circuit or close a circuit. The diffe

Snow Flurry 140012Circuit breakers Circuit breakers are safety devices that open a circuit when the current flow reaches a certain level. This hel

Electrical13MotorThe motor used on this snow thrower is an AC universal motor that is not serviceable. Before troubleshooting an electric motor, check

Snow Flurry 140014Motor Removal/replacementTo remove/replace a motor:1. Disconnect the power source.2. Remove the upper belt by following the procedur

Electrical152. Install the foam gasket.3. Apply a heavy bead of Terostat MS 939 or equivalent sealant around the top half of the motor where the gaske

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Snow Flurry 140016Switch box assemblyTo remove/replace a switch box assembly:1. Disconnect the power source.2. Slide the control bail out of the hole

Electrical176. Remove the three screws that hold the left side of the motor cover to the snow thrower using a #2 phillips screw driver. See Figure 2.2

Snow Flurry 14001810. Remove the harness clip using a #2 phillips screw driver. See Figure 2.23.11. Disconnect the harness from the motor harness.12.

Electrical19Servicing the switch box assemblyNOTE: DO NOT open the switch box during the warranty period. If there is a failure under warranty, replac

Snow Flurry 140020NOTE: With the switch box open, the internal func-tions can be explained.• Depressing the starter button lifts the torsion spring so

Electrical21Returning to serviceAfter diagnosing and repairing any fault in an electrical circuit and any other repairs needed, the following steps sh

Snow Flurry 140022For Parts Call 606-678-9623 or 606-561-4983www.mymowerparts.com

Belts and Pulleys23Belts The Snow Flurry has a very efficient snow throwing pat-tern. This is accomplished through the use a two stage, belt drive

Snow Flurry 1400243. Move the idler pulley to relieve the belt tension.NOTE: A 10mm wrench can be used for leverage when moving the idler pulley.

Belts and Pulleys255. Remove the screw from the rear of the motor cover using a #2 phillips screw driver. See Figure 3.6.6. Remove the motor cover fro

IChapter 1: Introduction Professional Service Manual Intent. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Safety . . . . . . . .

Snow Flurry 140026Auger pulleyTo remove/replace the auger pulley:1. Disconnect the power source.2. Remove the lower belt by following the procedures d

Belts and Pulleys276.Inspect the key and the auger shaft keyway for damage.NOTE: If the key is damaged, inspect the auger for signs of impact damage.7

Snow Flurry 140028For Parts Call 606-678-9623 or 606-561-4983www.mymowerparts.com

Auger Housing Components29NOTE: The snow flurry snow throwers have two components that are normal wear parts. They are the rubber auger spirals and th

Snow Flurry 140030To remove/replace the lower discharge chute:1. Disconnect the power supply of the snow thrower.2. Remove the four screws that hold t

Auger Housing Components31To remove/replace the upper discharge chute:1. Disconnect the power supply of the snow thrower.2. Remove the lock nut and ca

Snow Flurry 1400328. Gently bow out the right side of the auger housing. 9. Slide the auger far enough to the left to allow the right side of the auge

Auger Housing Components3317. Remove the screw and washer that retain the right bearing on the auger shaft. See Figure 4.12.18. Slide the right bearin

Snow Flurry 140034Left side panelTo remove/replace the left side panel:1. Disconnect the power supply of the snow thrower.2. Remove the upper and lowe

Auger Housing Components358. Remove both of the nuts and bolts that hold the lower handle to the side panel using a pair of 10mm wrenches. See Figure

IIFor Parts Call 606-678-9623 or 606-561-4983www.mymowerparts.com

Snow Flurry 140036Right side panelTo remove/replace the right side panel:1. Disconnect the power supply of the snow thrower.2. Remove the belt cover.3

Auger Housing Components376. Remove both of the nuts and bolts that hold the lower handle to the side panel using a pair of 10mm wrenches. See Figure

Snow Flurry 140038Auger housingTo remove/replace the auger housing:1. Disconnect the power supply of the snow thrower.2. Remove the auger by following

Auger Housing Components39HandlesNOTE: The handle is composed of three sections. They are serviceable separately.Top section1. Disconnect the power su

Snow Flurry 140040Lower handle1. Disconnect the power supply of the snow thrower.2. Remove the two wing nuts and carriage bolts that hold the middle h

For Parts Call 606-678-9623 or 606-561-4983www.mymowerparts.com

MTD Products Inc - Product Training and Education DepartmentFORM NUMBER - 769-0634509/2010For Parts Call 606-678-9623 or 606-561-4983www.mymowerparts.

Introduction1Professional Service Manual Intent This Manual is intended to provide service dealers with an introduction to the mechanical aspects of t

Snow Flurry 14002• Be prepared in case of emergency: Keep a fire extinguisher nearby Keep a first aid kit nearby

Introduction3Fasteners• Most of the fasteners used on these snow throwers have metric thread sizes. For this reason, wrench sizes are frequently ident

Snow Flurry 14004Understanding model and serial numbersThe model number of a the snow thrower described in this manual is 31A-050-711. This manual is

Electrical5Basics of electricityIn order to diagnosis any electrical system there are few things the technician must understand:• Basic electrical val