b. The material given in this section applies to the operation of the vehicle under normal conditions. If extreme conditions of temperature occur, it is assumed the operator of the vehicle has prepared his vehicle for use for the conditions encountered.
29. ENGINE.
a. Instruction. This subparagraph traces troubles to a system affecting engine performance. Step b below gives simple engine tests to determine the mechanical condition of the engine. References in step b refer to step c for engine mechanical troubles, or to pertinent paragraphs in this section for system troubles, or when a test indicates a special unit is faulty, to the pertinent paragraph in this manual.
(1) Engine Does Not Turn Over When Foot Starter Is Operated.
(a) Clutch slipping. Check adjustment (par. [48]).
(b) Sheared engine sprocket key. Replace (par. [65]).
(c) Starter clutch stuck by congealed oil. Free starter clutch. Use proper grade of oil.
(d) Starter clutch worn. Refer to maintenance personnel.
(e) Engine locked (seized). Refer to organization mechanic.