1963-1973 Mercruiser all Engines and Drives Service Manual Books 1 and 2, Page 327Get this manual

1963-1973 Mercruiser all Engines and Drives Service Manual Books 1 and 2, Page 327

CARBURETORS TROUBLE SHOOTING CHART Nu mbers under ach complaint hea ing nd icate ord of probabi ity of causes isted In icate
free to move with thrott le valves closed Proper clear nce so throttle valves are tree to move with choke open POWER PISTON
POWER VALVE METERING JETS 2 Dirty, distorted, sti cking, incorrect part Dirty, stickin g, incorrect port Loose, plugged,
incorrect or t Worn, cncgedirty incorrect part Dirty, loose screws, incorrect pa rt NEEDLESEAT VENTURI CLUSTER FLOAT IDLE
NEEDLES THROTTLE VALVES GASKETS IDLE PASSAGES POWER PISTON VACUUM PAS CHOK VACUUM ASSAG THROTTLE BODY HEAT PASPUMP BODY Bent,
lea ky Warn, damaged I Sticking,open or closed, damaged loose crews Impro per sealhard or brittle material, P ug ged or vacuum
leaks Plug ge or va uu leaks Plu gg ed with carbon Crack loose fit an plunge shalt ! PUMP PLUNGERI Hard or worn leather,