Case 150, 190, T90, 2310, 2510, 2712 Tractor Service Manual

Table of Content

1. Table of Content
2. Specification
3. Engines
4. Fuel System
5. Hydraulic System
6. Steering
7. Transmission

Manual Extract: SPARK PLUGS

The purpose of the spark plug is to fire or ignite the proper fuel mixture in the combustion chamber of the engine at a preset time. This is controlled by the breaker cam and points. A Spark plug which does not function properly will increase fuel consumption, cause crankcase oil dilution, excessive de-posit in the combustion chamber and greatly reduce the efficiency of the engine.

A close examination of the spark plug will give the service man an indication in general of the engine conditions. A fouled or burnt spark plug can be used as good visible evidence to show the customer when soliciting a valve or overhaul job.
Removal and Inspection

Remove the wire from the spark plug and use a thin wall deep socket spark plug type wrench of correct size 13/16″ to remove the spark plug. The wrong size or type socket wrench can cause distortion or insulator breakage.