Mercury Mariner Models 135 150 175 200 Service Manual, Page 137Get this manual

Mercury Mariner Models 135 150 175 200 Service Manual, Page 137

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TIMING, SYNCHRONIZINGADJUSTING
aSynchronizationIdle Stop Screw ScrewsMarkThrottle CamRoller 3 Verify throttle shutter plates open and close simultaneously during throttle lever operationReadjust