Water impellor direction?

[KIRCHNER]

IF i installed new impellor vanes in wrong direction, will it correct itself? ........im at a standstill. cant think...

[Merc 2.5]

Prob so but could damage it

[Chaz]

No sir, take the time to clock it in the correct rotation ...

[KIRCHNER]

​im on it, better safe than sorry, ill pull the cover. thanks.

[Merc 2.5]

Bet u wont do that again haha

[Chaz]

Bet u wont do that again haha

Everybody has to do it once ... :thumbsup:

[Merc 2.5]

I was always to paranoid I rekon , double checked rotation, ( I turn drive shaft) but never was in a big rush doin one. Anything can happen if u rush tho. dont matter what u doin

[TEXAS20225]

X2 for Charlie it so simple if you let it be if you will always replace all gaskets in at least top half of pump make sure your metal parts are good and not over scored( center plate and cap) then slide new impeller on shaft with key way installed take some dawn dish soap wipe it around inside of pump cap then slide it down to impellor i have a spline tool that has a socket and t handle on it i push down on the cap with one hand and rotate the drive shaft clockwise while pushing down on cap a wa-la cap slides down instantly and your vains are correct . just my .02 but then i did a couple in my time

[KIRCHNER]

I HAD it correct. dont know how to get my pic up,like u have? i have an album listed but want a pic, when i post. limited computer skills, thats me....the ole lady gave up tryin!

[KIRCHNER]

X2 for Charlie it so simple if you let it be if you will always replace all gaskets in at least top half of pump make sure your metal parts are good and not over scored( center plate and cap) then slide new impeller on shaft with key way installed take some dawn dish soap wipe it around inside of pump cap then slide it down to impellor i have a spline tool that has a socket and t handle on it i push down on the cap with one hand and rotate the drive shaft clockwise while pushing down on cap a wa-la cap slides down instantly and your vains are correct . just my .02 but then i did a couple in my time
thats how i do it also, just 2nd guesssd myself...some say a new 1 will flip over. soon as it starts????

[KIRCHNER]

I was always to paranoid I rekon , double checked rotation, ( I turn drive shaft) but never was in a big rush doin one. Anything can happen if u rush tho. dont matter what u doin HASTE MAKES WASTE, absolutely.

[TEXAS20225]

i have never had one flip i used to rock drive shaft back and forth while pushing down on cap and had one i sent out with customer called me back with a low water pressure issue it was one of the vains was flipped other way i never did that again. i have had all kinds "great ideas" from customers like well if you flip the impellor it will have great pressure lol most of these guys were the economy boaters lol:rolleyes:

[KIRCHNER]

We used to flip the omc cluch dogs and haveanother season, who cares if reverse was floppy??LOL... I WAS a teenager those days. tomorow the big day, gota big,big tote to lower it in, those lwp flushers stink, the rigid ones anyway, santa got me a new timing lite,spark tester, thermo-gun. want to run it for 20 min or more. then delete the oil pump u think tony b. can remap my digital 225 ecu to 2,4 curve? now is analog original, couldnt hold w.o.t. long. found a kink in factory hp fuel line top of vst n aq bad primer bulb. ill give the analog ecu another try. fngine has no limiter. lets hope it pumps water huh?

[TEXAS20225]

GO SANTA LOL , i been doing that for years i just had to keep it quite:rolleyes: amazing what is not common knowledge is not harmful with the woman:cheers: analog ecus are the first go round and came on 2.4 i have a merc manual that gives the history of each and every ecu Mother merc made the year ,size mota it was on originally, interestingly enough the manual says analog ecus cannot be repaired im not sure if that includes reflash how ever i dont know anyone who can re-flash the potted digital ecus they can be reflashed as they were originally but ive never heard of some body reflashing a 200 a30 to a 225 pmax a32

[TEXAS20225]

on further viewing of my past history with ecus i have mercurys DDT which is a digital diagnostic tester and with the right harness's you can adjust the digital hi-performance ecus like the 11350 style boxs but not the consumer box's like a8, a26, a30 which are all 200 efi boxs i have to wonder though fuel pump drivers map sensors injector drivers are all inside the potting wonder how it gets repaired without R and R

[TEXAS20225]

You know when you build motors everyday necessity becomes the mother of invention i guess i tried almost every conceivable way to run motors on water when tuning them after rebuild and believe me these 200 EFI's are like kids all individuals SO THEY ARE ALIKE BUT DIFFERENT IN SOME WAY or a least i think so from idle so different with exact same style components or one runs hot the other is so cold its scary i had muffs , big troughs, even a mid section that had water hose plumbed in the bottom with a valve to regulate the pressure but finally nixed that because of gasket cost and the differences between one exhaust divider and another so it turned out best to do it case by case and i live a 1/2 mile from lake so guess what go to the lake because no motor runs on the hose like it runs in the water the adventure in outboards was fun for lots of years now at 3/4 of a century in age not so much:cool:

[Merc 2.5]

Glad ur willing to share what you have learned over the yrs. Very much appreciated, you and quite a few others have save me lots of times by reading old stuff or asking ( lots money to) :thumbsup:

[ChrisCarsonMarine]

Before most of you guys time,but the first 6 cylinders merc made,late 50's,were direct reversing.This means one pinion gear,one driven gear,no clutch dog...always in gear.Reverse was accomplished by shutting the motor off,pulling the "shifter"into reverse position changing the timing ,and pushing the reverse start button.This cranked the motor backwards,and if all is in tune,the motor started and you were in reverse.The starter has two drives,up for forward,down for reverse.Worked well when adjusted and tuned well,soon got nicnamed "Dockbuster".Still have a couple.
Anyway,they used the exact same impeller as our modern v6's,2.0-2.5's,and most of the older inlines.The impellers worked for years,and didn't mind flipping over one bit...just sayin.Chris

[Whaaaaat]

I've seen plenty go in the proper rotation, then come out a year later for service with some blades reversed. Was taught it was from sneezing on shutdown, where the motor might turn backwards half a turn or so.

[TEXAS20225]

i guess i was lucky ive never seen one with vains flipped in a running lower unit and i rebuilt lowers only for nearly 12 years for the united states and shipped um all over it, i coned them ,altered skegs ,and im not sure how many i rebuilt 100s and 100s

[FUJIMO]

...minor amount of grease smeared on inside top cover stainless cup, grab driveshaft with hand & rotate clockwise half turn while pushing down on top cover, over impeller. done. never, ever, had any kind of issue, hundreds later.

[TEXAS20225]

lol see post #8

[powerabout]

if you put it in backwards as soon as it has some revs they will swap back.