mercury 1150 6cyl

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JayShae

Recruit
Joined
Dec 26, 2012
Messages
2
Hello out there looking for help!!!what year is my motor its a mercury 1150, thunderbolt ignition ser#7097453 with power trim.blue and red stripe.Also what trim oil do I use says to use sae 20 w oil non detergent cant find this oil anywhere.How do I substitute this oil the right way.And last but not least any history behind this motor,I no the water pumps are an issue,and distibutors thanks alot.
 
C

carholme

Rear Admiral
Joined
Sep 4, 2010
Messages
4,845
Re: mercury 1150 6cyl

Beginning with 7, that s/n is a Canadian built engine:

115 1977 EL 4567952 - 4855152 7087423

7087423 being the beginning s/n for 1977. As 1978 begins with 7112248, yours is a 1977.

Parts List:

Mercury Parts, MERC 1150

Service Manual P/N: 90-86134--4

90-86134--4 | eBay

In the interim, here is a link to the condensed version of the Clymer manual. Download it soonest to your computer as the link is short lived.

Small Engine Repair Reference Center Home


Gerry
 
daveswaves

daveswaves

Ensign
Joined
Mar 22, 2002
Messages
901
Re: mercury 1150 6cyl

You can replace the number 20 oil with transmission fluid. You should disconnect the lines at the trim cyl and flush the pump with tranny fluid. Push the fluid out of the trim cyl by moving the piston up and down. Wrap a rag around the cyl when you move the piston, it can squirt a fair distance:facepalm:.
 
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Chris1956

Supreme Mariner
Joined
Mar 25, 2004
Messages
29,072
Re: mercury 1150 6cyl

I had a '77 Merc IL6. I used 5W-30 motor oil in the PTT unit. Never had an issue.
 
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Chris1956

Supreme Mariner
Joined
Mar 25, 2004
Messages
29,072
Re: mercury 1150 6cyl

BTW- if you remove all the oil as Dave recommends, you will need to bleed the PTT cylinders. Just add the 5W-30 and forget it.
 
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