1963-1973 Mercruiser all Engines and Drives Service Manual Books 1 and 2, Page 34Get this manual

1963-1973 Mercruiser all Engines and Drives Service Manual Books 1 and 2, Page 34

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TUNE UP DESCRIPTION This ction outl ine procedu re to fo llow wh perform ing
Figure 1 Checking Compression

2R move flam arre tor anc! bl ck throttle and chok in wide op position 3 I