Merc 60hp 2 stroke won't start.

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Pekka

Cadet
Joined
Aug 11, 2010
Messages
8
My Merc is an some what old 60hp 3 cyl 2 stroke.

When I try to start it, it seems to fire once, do a twist, and halts -as if it is fireing backwards.
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I now suspect the exhaust canal/outlet to be clogged. Is this a plausible cause?
If a 2-stroke engine can't get rid of the exhaust, it can't get any new fuel in -right?

How do I check if the exhaust canal/outlet is open and free?
Apply compressed air in the cylinder chamber, with the piston half way down, and blow through the exhaust system?

Is it possible to split the propeller house from the drive shaft, and inspect the exhaust canal?
 
L

latin monkey

Petty Officer 1st Class
Joined
Jun 5, 2010
Messages
272
Re: Merc 60hp 2 stroke won't start.

you can pull the lower unit and check the exhaust tube
 
mercfixer

mercfixer

Cadet
Joined
Jul 30, 2009
Messages
19
Re: Merc 60hp 2 stroke won't start.

Exaust restriction doesnt sound very likeley.....check basics, spark, compression, then i believe i would look for a sheared flywheel key. The magnets on that flywheel are a possible cause on the newer models because they are glued onto the flywheel, if the motor has a one piece hood this may be the case and you can usually peek up under the flywheel to check the magnets. Usually there is some sign of debris from the damaged magnet on top of the engine block.
Hope this helps
 
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