Small Engines (Lawn Mowers, etc.): Lawnmower Stalling, spark plug wires, electric clutch

Question
The Enigine starts and runs fine, it just stalls when you release the brake/clutch pedal or try to engage the blades. I have completely removed the electric clutch and it does the same thing.
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Followup To

Question -
I seen a very similiar question to Mine and wanted to know if the problem every got fixed. I have a 18hp poulan riding mower. When I release the clutch pedal or engage the clutch for the blades the engine dies. I have tore into it and found that the clucth was shorted and tore up, I unplugged the cluth out of the circuit. I am an Electrical Controls Engineer so I am pretty handy with a multi-meter. I checked the diodes and they are all right. The funny thing is on the primary of the ignition coils I have about 130 volts DC and, so i checked the regulator and it seems to be fine, about 15 volts DC. I don't know if the clutch shorting out has messed up something else, I have checked everything i can think of. Any help would be appreciated.

Answer -
Is the engine not starting or does the engine die when you engage the electric blade clutch?

Let me know.
Eric

Answer
It must be a safety switch, connector or wire causing the problem.

Follow the wire harness from the key switch down to the engine block.  You should find wires for the charging system, probably 2 wires for that, and another single wire that is usually black and connected to a screw terminal or spade terminal.  This wire goes to the coil primary.  Dis-connecting this wire should isolate the ignition coil from the rest of the circuits.  

Another way you can isolate the coil is to remove the top engine metal shroud to access the coil.  Dis-connect the small wire connected to the coil. You will not be able to shut-off the engine with this wire dis-connected.  You can either pull the spark plug wires off or choke the engine out to shut-off the engine.

Basically you are checking the ignition coil to ensure it is good and you can also determine if there is too much load on the engine causing it to stall.

Let me know what happens.
Eric