[Colin T]

I have a Mariah 21 SC 1998
with a 5 ltr Mercury Marine engine
I think the serial no. is OLO45852
What would be the best manual to purchase
which would give me details and views of this engine along with service details

[bpfirrman]

Did you check in the manuals section of the forum? We should have what you need in there.

[ShabahZ280]

Colin, we have the manuals online. Since you are a contributor, you have access to them. We have the service and the engine manuals that you need. In the "Engine Maintenance & Repairs" section, click the blue section called "Service Repair & Operating Manuals", then click "Mercury Mercruiser".

[Colin T]

Hi and thanks for your reply
The reason for needing exploded detail of engine is
Whilst at sea travelling at a fair rate of knots smoke started coming from all over
In my panic I cut the engine whilst still in gear
I was rescued and am now back on my mooring
I am unable to get engine out of gear. My initial investigation I could not smell any motors that could have burnt out and there is no sign of burnt out wiring up to now
The engine manuals I am looking for are in relation to
my Mariah 21SC with the following engine


5.0
LITRE
THUNDERBOLT 5 IGNITION
MerCruiser
SPECIFICATIONS
MODEL………………….MCM 5 0 LITRE SPARK PLUG…………..ACMR43LTS
DISPLACEMENT………………..305 CID PLUG GAP……………………….0.045
CYL FIRING ORDER…….1-8-4-3-6-5-7-2 MAX W O T RPM………...44004800
IGNITION TIMING……...……..10º BTDC IDLE RPM IN NEUTRAL……..…..650
SPECIAL IGNITION TIMING REQUIRED ENGINE ROTATION…. (LH) left hand
For fuel and oil requirements refer to Operation & Maintaince Manual
MERCRUISER DIVISION OF MERCURY MARINE, STILLWATER , OK , U.S.A.
SERIAL NUMBERS
0L045852 OL243071 0L119376
ENGINE SERIAL NUMBER TRANSOM SERIAL NUMBER DRIVE SERIAL NUMBER