May 1, 2013

How to replace a tiller drive belt

By Lyle Weischwill
How to replace a tiller drive belt

This DIY repair guide shows how to replace the drive belt in a tiller. The drive belt connects the engine pulley to the transmission pulley to turn the wheels and tines. If the belt is broken or worn, the wheels and tines won't turn. Replace a worn or broken tiller drive belt using the manufacturer-approved replacement part.

Follow the steps in this repair guide to replace the drive belt on common Craftsman, MTD, Husqvarna, Poulan, Troybilt and Snapper rear-tine tillers.

Quick links
Tools required
Wrench set
Work gloves
Repair difficulty
Time required
30 minutes or less
Repair difficulty
Time required
30 minutes or less

Instructions

  1. 01.

    Disconnect the spark plug wire

    Pull the spark plug wire straight up and off the plug.

  2. 02.

    Remove the drive belt cover

    Remove the mounting screws that secure the drive belt cover to the tiller and pull the drive belt cover off.

    Remove the drive belt cover mounting screws.

    Remove the drive belt cover mounting screws.

    Remove the drive belt cover nut.

    Remove the drive belt cover nut.

    Pull the drive belt cover off and set it aside.

    Pull the drive belt cover off and set it aside.

  3. 03.

    Remove the drive belt

    Remove the bolts from the belt keeper behind the engine pulley and pull the belt keeper off.

    Remove the bolt from the idler pulley and pull the idler pulley off.

    Pull the drive belt off of the engine and transmission pulleys.

    Remove the bolts from the belt keeper.

    Remove the bolts from the belt keeper.

    Remove the belt keeper.

    Remove the belt keeper.

    Remove the idler pulley bolt.

    Remove the idler pulley bolt.

    Remove the belt idler pulley.

    Remove the belt idler pulley.

    Remove the drive belt from the tiller.

    Remove the drive belt from the tiller.

  4. 04.

    Install the new drive belt

    Position the new drive belt on the engine pulley and transmission pulley.

    Reinstall the idler pulley with the belt routed over the idler pulley and through the belt guide.

    Reinstall the belt keeper behind the engine pulley. Make sure that the belt is properly routed through the belt keeper.

  5. 05.

    Reinstall the drive belt cover

    Position the drive belt cover on the side of the tiller and secure with the mounting screws.

  6. 06.

    Reconnect the spark plug wire

    Reconnect the spark plug wire to the engine and check for proper tiller operation.

Warning: Undertaking repairs to appliances can be hazardous. Use the proper tools and safety equipment noted in the guide and follow all instructions. Do not proceed until you are confident that you understand all of the steps and are capable of completing the repair. Some repairs should only be performed by a qualified technician.

Symptoms common to all tillers

Choose a symptom to see related tiller repairs.

Main causes: leaky engine head gasket, damaged sump gasket, damaged oil drain plug seal, loose or cracked fuel line, leaky carburetor seal
Main causes: dirty carburetor, engine needs tune up, stale gas
Main causes: broken shaft clevis pins, transmission failure
Main causes: worn or broken drive belts, bad transmission, clutch cable problems
Main causes: clutch cable problems, faulty transmission
Main causes: carburetor failure, bad gasoline, dirty spark plug, broken recoil starter
Main causes: damaged tines, broken clevis pins, worn drive belt, faulty transmission, clutch cable problems, improper depth-stake setting

Repair guides common to all tillers

These step-by-step repair guides will help you safely fix what’s broken on your tiller.

May 1, 2013
By Lyle Weischwill
How to replace a tiller recoil starter

The recoil starter spins the engine when you pull the starter rope, and the rope retracts when released. If the recoil starter assembly is broken, follow the steps in this repair guide to replace it.

Repair difficulty
Time required
 15 minutes or less

Articles and videos common to all tillers

Use the advice and tips in these articles and videos to get the most out of your tiller.

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By Sears PartsDirect staff

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Tiller common questions

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These frequently asked questions might help you figure out what's wrong with your garden tiller.