help identifying 4cyl inline mercruiser

[MerkyWater]

Can someone help me identify this engine? Ultimately I am trying to find a service manual for this engine.

I found these numbers on the serial number tag L031748

These are the numbers I found on the block just above the starter.
4097080 187 98

Thanks in advance

 

[Bt Doctur]

1998 IL4 181 cu in 3.0

 

[Scott Danforth]

look here for manual Boatinfo - boat brochures and manuals for boats and marine engines!

 

[MerkyWater]

Thanks guys, i appreciate the information. Was a big help. So i got the manual downloaded and have the engine running now. i just started a new topic on the new issue i am having.