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Thanks DON for all advises during this mercury racing rebuilt.
Now it's ready to go!

thanks for explanations:thumb up2:

Many thanks again for all these technical informations DON!!!:thumb up2:
Just wondering if on a 2 stokes outboard (not especially this model) with horizontal reeds block it's possible to avoid bleed...

I've a question regarding the bleed lines on the 300X engines, 0T235084 - 0T429939 (USA) & 0T429940 - 0T999587 (USA)
Why on the port side of the block there is absolutely no bleed line on the...

http://www.bbcboards.net/attachment.php?attachmentid=340209&stc=1

check here=
http://p.widencdn.net/mvvvno/MercuryInsider_SEMay2018?j=231137&sfmc_sub=219006&%20l=111_HTML&u=6921406&mid=7232290&jb=5

Interesting, you wrote ''he also advised me the optimax and pro xs line are done as of last week'', does this concern also Racing models 250XS and 300XS too??

Built this 3.4liters and make it at 475 lbs (215kg) is a real challenge, does this means theses new engines series doesn't use steel cylinder liners??

Thanks all for replies, OK for the piston weight similar in different overbore sizes (but on the XR2 racing engines the std size are not the same weight for exemple) but if the piston is at the...

Doing this you've a difference in term of piston weight, so a poor balance of mobile parts.... that's my interrogation...
Do they sale many of these type of rebuilt???
Cannot find also other...

Just curious about the reman 841017R51 (Reman)., on mercury web site https://embed.widencdn.net/pdf/plus/mercurymarine/cohe7ajy8c/Mer-QS_Reman-Prod-Guide_Web-Version.pdf?u=orhjei
the description...

The thread is 1/4 UNC, the bolt lenght under the head is 44mm so 1.75inch, you need also a 1/4UNC nut.

NGK recommandations about spark plugs antiseize applications or not when and where.

http://jenniskens.livedsl.nl/Technical/Tips/Files/Sparkplug%20NGK%20TB-0630111antisieze.pdf

Merry Christmas to all. Thanks for all the great information and advices i've found here !! http://www.informatiquechezvous.com/wp-content/uploads/2016/11/bonhomme1.jpg

Many thanks Don, for this accurate and precious information!!:thumb up2:

Hi,
250XS OT818636 year 2004 ( built sept 2003)
I've a damaged female connection on the harness plug connected to the dual driver, looks like AMP superseal type but slightly different (see...

Just curious, what's ECU amps consumption at idle (700rpm) for the 2015 225 PRO XS concerned?

So, no more informations if mercury racing is going to produce them, due to the fact the promax advertising is on the merc racing prop catalog, do they consider if you've to buy a 4 blades racing...

Thanks Don, thanks all, so improved an automotive one with npt/bsp adapter, good liquid filled gage, and finally opted for the hose style, so I'm sorted about this. Thanks:thumb up2:

Thanks Don , it was my guess too, the gage diam is a bit wide for the space, may be you've the reference for the mercury hose to adapt the 91-2928 merc tester?

I've used solid hub kit for fourteen years,without any kind of problem, the best adhesive I've found and use for the the snubber strips because they tend to fall off due to the adhesive failing, is...

Thanks Leonreno, when using compression tester with hose and big bourbon gage, you need to crank more than using the short model mercury 91-2928, that's why my original question is the compact and...

Thanks for the reply, interesting point Rip Bass, the size of the gauge the 91-29287 compression tester make me suspicious about the fact you can install it between the coil plate and the fuel rail....

Hi, just want to know if the 91-29287 compression tester is usable on OPTIMAX 250XS year 2003 starting number 0T651982.
The service manual recommand this tool, but it seems the space arround the...

Ok thanks for explanations, otherwise cannot find the meaning of the word ''leigh'' can you explain?? may be lathe??
Here is the culprit, the lower shaft of the SM back in 2004, after the third...