This is the Service Manual for the John Deere 440 Series Spark Ignition Tractors. This 300-page manual has been broken down into sections and groups separating the servicing of various components of the tractor. By using the section index on the preceding page, reference can be made to the table of contents appearing on the first page of each section. This manual contains a brief description of the more complicated systems of the tractor and tells how they operate. Dimensions of many new parts are given as an aid in determining when parts replacement is necessary. Tests and adjustments required to help keep the tractor operating at full efficiency are explained in detail.