Mercury 9.9 outboard 2 stroke Serial number OD127396

SOURCE: how to remove shift rod linkage to pull lower unit

goto local library get book on unit!!! :)

SOURCE: outboard motor overheating

Mate.The powerhead(engine block) is clogged.Don,t run it anymore untill its cleaned out or the motor will cook.Take the heads off 1st and see whats in the water jackets.It will probably be blocked.A build up of white 'gunk' is the main indicator.If thats the case,a complete cleanout is needed.Hope this helps

SOURCE: I want to disassemble the lower unit on the 115hp

you actually want gear housing exploded view and/or lower unit mid section exploded veiw-i have the mercury service manual for the inline series 75 thru to 150 2 strokes-but my printer/scanner down at moment -hopefully fixed this week so will be able to scan and send to you

SOURCE: replace water pump impellor 15hp yamaha outboard

Put the motor in neutral.On the leg of the motor there is a little side cover plate.Remove.Undo the bolts.This is the gear change linkage.At the cavitation plate,there is 4 bolts.Remove.If the lower housing does not drop,give it a soft whack with a soft hammer.When dropped,you will see the prop shaft and the gear linkage.Lower it all the way out.Its easy to work on if you put the lower skeg in a vice.Take the water pump apart BUT!!! have a look at which way the impellar blades are pointed.Grease the new impellar as you put it back in and turn it at the same time to get the nodes in properly.Heaps of grease to protect all the bolts.Makes it easier next time.Hope this helps

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SOURCE: how tough is it to change water pump impeller on 15hp johnson

There is no special tricks.Unbolt the gearshift linkage that has access through the side of the leg.Usually a small plate.Unbolt the lower g/box.4 bolts I think.The box should then drop.If not,use a rubber hammer and be patient.Put the lower skeg of the g/box in a vice to make things easier.NOW.When you lift the housing of the w/pump take a note of which way the impellar pump lobes are curled.DON'T put the new impellar in the wrong way.It's probably worth putting in a new seal whilst it's apart.You spin the housing or imp. as you put it together.Use a small bit of grease for the initiall dry start-up.Put some very good grease on the top splines on the driveshaft.It goes straight into the crankshaft.If it corrodes,nothing comes apart.As you put the g/box back on,spin the prop so the splines go back in.There is no special alignment.Gearchange linkage and you go fishing.(take the prop off and regrease the splines on the shaft of it)Hope this helps