1997+ Mercury 35/40HP 2 Cylinder Outboards Service Manual PN 90-826148R2, Page 100Get this manual
7With throttle at idle position, turn idle spe ed screw clockwise "Inuntil gap of 0.005 in- 0.040 in(0.13 mm1.02 mm) is achieved betwe en throttle cam and cam follower0.005 in- 0.040 in(0.13 mm1.02 mm)
WARNING
Keep clear of propeller while cranking and running the outboard motor9C onnect the electrical harness and fuel line to engine10With the outboard in the water, start engine and allow to warm up11Adjust idle spe ed screw in "F RWAge ar to specification
NOTE: When setting idle mixture, adjust le aner than necessary to attain re asonably smooth idlingWhen in doubt, stay to the slightly rich side of the adjustment12With engine running at idle spe ed in "F RWAge ar, turn mixture screw "In "(clockwise) until engine starts to "bogdown and misfireB ack out 14 turn or more52300am ollower RollerThrottle amam ollower ScrewIdle Spe ed Screw