merc outboard help

[geore]

please help me i have a mercury outboard. dont know the year. all i know is on the front cover of the ob, it says 1500 Thunderbolt ignition.<br />i need to know the year and anything else i can learn. i have to replace my impeller . i ran it this afternoon adn when i was trying to drop my l\u to service my impeller i noticed that there is oil coming out of my prop. i have ran the ob in the yard with the muffs but i never have seed the oil come out of the prop till now please help with any ifo

 

[Trent]

Re: merc outboard help

Look on the transom bracket for the serial number. Need to know that for year. The oil you see is normal. Unburned oil. <br /><br />

 

[Spidybot]

Re: merc outboard help

Hi Geore<br /><br />You need your motor serial # to identify the year and model. These facts are important for ordering spare parts and for members of this board to give you help.<br /><br />As you are going to do maintenance work yourself a manual is a must - the $$ spend will come back again and again.<br /><br />It sounds as if your lower unit has a bad seal but getting closer to this involves some basic investigation on your part (another task that is easily done by the manual's description).<br /><br />From your description it sounds as if you have a 6-cyl inline 150hp. If the serial is not readable some of the experinced folks here may be able to define the year if you describe the decals/colors on the cowling.

 

[NathanY]

Re: merc outboard help

I did a little research for you and found this out: All merc 1500's (150hp) all use the same impellor. Part# is 47-89984T4 and it costs about $20. Hope this helps.

 

[geore]

Re: merc outboard help

the serial no is 4750544 i cant find a model number anywhere. is it really hard to change the seals by myself or do i need to get mech. to do it when he changes my impeller thanks alot for your help

 

[NathanY]

Re: merc outboard help

Your motor is a 1977, back then they didnt go by the model number on those motors, they just used the serial number.

 

[geore]

Re: merc outboard help

thnaks alot for all the help but i still need to know if i can replace my seals in the l\u or do i need to get a pro i still have to replace my impeller. i thinks. i bought this boat with oboard on it. i know it has set up for around 5-6 yrs. i cleaned er out and crancked her up and she started. i replaced my plugs and fuel line assembly adn so on. besides my impeller or water pump what else should i do

 

[Tradition]

Re: merc outboard help

The thing to do is to check the oil in the lower unit before you ask a tech to take it appart. just remove the fill plug,(above the cavitation plate.) and remove the filler plug just at the skeg, use a good gearcase oil and fill from the bottom. This allows the air to escape from the top hole. Close the top screw first without removing the gearcase container then quickly install the plug in the bottom. (NOTE) If the oil is clean,and not milky looking then you have no problem with a leak at the lower unit, but rather oil from running the OB at idle.

 

[geore]

Re: merc outboard help

thanks alot but how do iget my prop off my lu. iremoved the nutand pulled and jerked onit but it wnont come off. i need to get some work done on my prop

 

[Bear]

Re: merc outboard help

try a search for "frozen prop" in this section<br /><br />Good luck!