MTD 250 2005, 250 Service Manual

Service Manual

2005 - 250 Series - World Tiller

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 use 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 Inc - Product Training and Education Department

FORM NUMBER - 769-02094

10/2005

TABLE OF CONTENTS

Introduction ............................................................................................................................1

Tines ......................................................................................................................................3

Clutching Mechanism ............................................................................................................4

Gearbox Removal and Replacement. ...................................................................................7

Gearbox Maintenance and Repair. .......................................................................................9

Seal Replacement ...............................................................................................................15

Vertical Crankshaft Front Tine Tiller

Vertical Crankshaft Front Tine Tiller

1. INTRODUCTION

1.1. Disclaimer: This service manual was intended
for use by trained technicians. The information
contained in this manual is current and accurate
at the time of writing, but is subject to change
without notice.

1.2. Purpose: The vertical crankshaft front tine tiller
was designed to provide a high value tool for
homeowners and gardeners who do not need a
large rear-tine tiller but require something larger
than a cultivator. This product is small enough to
be handy yet large enough to get the job done.
Standard rotating tine tillers excel at turning soil
that has previously been broken. This means
turning-over and introducing compost into exist­ing flower beds and gardens. While it is capable
of breaking untilled soil, a counter-rotating tine
tiller is better suited to that task. The vertical
crankshaft design yields savings in engine cost.
See Figure 1.2.

1.4. Other Versions: The tiller depicted here is just
one of a variety of vertical crankshaft front-tine
tillers currently in production. See Figure 1.4.

Figure 1.4

1.5. Versions of this tiller are distributed in Europe.
Features on export tillers vary slightly from
domestic tillers. See Figure 1.5.

Figure 1.2

1.3. Description: The standard (forward) rotating
tines are driven by a set of worm gears within
the transmission. The tines can be adjusted to till
a swath that varies from 13” (33cm) to 24”
(61cm). The clutching media is a belt that is ten­sioned between two halves of a split sheave.
One half is attached to the engine, and the other
half is attached to the worm shaft. The friction of
the belt between the two sheave halves trans­fers power from the engine to the worm shaft at
a 1:1 ratio.

Figure 1.5

1

Vertical Crankshaft Front Tine Tiller

1.6. Different widths and tine configurations are in
production. The T-250 44cm/61cm version has a
disc on the end of the tine shaft to confine trail­ings. See Figure 1.6.

Figure 1.6

1.7. The disc can be removed. See Figure 1.7.

1.8. The tines can be reconfigured. See Figure 1.8.

Figure 1.8

1.9. There is also a T-210 35cm/40cm version,
roughly 50% larger than a mini cultivator.
See Figure 1.9.

Figure 1.7

Figure 1.9

2