2000 mercury 8hp 4 stroke no oil plugs.

[CHRISBRITTAIN1]

Guy I hate to say this but I'm a Nascar Mechanic and my little mercury 8hp 4 stroke has no dips stick or oil filler plug or drain plug, I have removed the starter, the carb, all electrical and I can't find anything...
Serial number OT080686 2000 model 8M brunswick Corp

 

[CHRISBRITTAIN1]

Do we not have any mercury guys here that might know this quickly. My son's gonna wanna fish after Christmas Santa gifts..today the motor started running hot one thing was a lean mixture screw...second thing I believe is 2 yr old oil...I just bought the motor

 

[racerone]

Is it a 4 stroke ?-------Do you see a timing belt / camshaft ?

 

[achris]

Serial number lookup says that's a 2 stroke.... That's why you can't find a dipstick.... or anything else related to crankcase oil.... It don't got none...

Chris......

 

[racerone]

Post pictures of this motor / powerhead.----And if it is a 2 stroke and you ran on straight gas you may not be going fishing.

 

[achris]

Post pictures of this motor / powerhead.----And if it is a 2 stroke and you ran on straight gas you may not be going fishing.

Was going to mention that, but seeing as he's a 'Nascar mechanic' figured he should already have figured that out..... :facepalm:

 

[CHRISBRITTAIN1]

Yes it is a four stroke and here are some pics... I just bought this boat and motor of the guy and was told it a four-stroke.

 

[CHRISBRITTAIN1]

I'm gonna have to reduce pic.

 

[CHRISBRITTAIN1]

The guy I bought it from said he only ran straight gas for 2 years...I believe you are right though...it make sense now...holly crap, how is this motor togetber...

 

[CHRISBRITTAIN1]

I'm gonna try 50 to one...

 

[CHRISBRITTAIN1]

I can't use jpegs. Trying to get pics over

 

[achris]

Upload your pictures to a sharing site, like photobucket, then post the links. They then show as the picture here.

 

[CHRISBRITTAIN1]

Hey guys it 2 stroke and just put 50.1 in it and I guess the guy had to adjust the crap out of it to get to run. Does Andy know know all the factory settings? I know airfield is 1.5, but what about the low needle and the 2 Philip's heads on linkage side? Sorry to be such a pain...

 

[CHRISBRITTAIN1]

No Title

The screws are circled in Red Merry Christmas to all

 

[ondarvr]

If he or you ran straight gas the motor it's toast, and you don't need to change anything to make it run on straight gas or pre-mix, it will run about the same on either one.

Check the compression before doing anything else, if it's low or uneven no amount of adjusting will make it run well.

 

[CHRISBRITTAIN1]

Compression is fine, runs food just a little rough running, due to the previous guy not know what he was doing, according to specs I'm 4 psi under factory

 

[ondarvr]

What were the compression numbers?