Figure 2-2.—Typical manual shift transmission.the clutch drivingClutches transmit power frommember to the driven member by friction. In the DISCCLUTCH (fig. 2-3), the driving plate secured to theengine flywheel gradually contacts the driven member(disc) attached to the transmission input shaft. Thecontact is made and held by strong spring pressurecontrolled by the operator with the clutch pedal(fig. 2-4). With only light spring pressure, there is littlefriction between the two members, and the clutch canslip; therefore, do not use the clutch pedal as a footrest.As the spring pressure increases, friction also increases,and less slippage occurs. When the operator’s foot isremoved from the clutch pedal and the full springpressure is applied the speed of the driving plate anddriven disc is the same and all slipping stops. The2-2flywheel and the transmission input shaft are thenconnected.Improper adjustment can damage or ruin a clutch.Figure 2-5 shows the proper free travel and linkage.Several clutch troubles may occur during vehicleoperation that should be documented and turned inbefore too much damage occurs. These troubles includeincorrect free travel, slipping, chattering, or grabbingwhen engaging; spinning or dragging when engaged;and clutch noises.MANUAL TRANSMISSIONThe transmission is located at the rear of the enginebetween the clutch housing and the propeller shaft. The
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