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

Manuals: Service Manual
Specification
Engines
Fuel System
Hydraulic System
Steering
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.