Ok. I haven't got a solenoid at the moment. Still trying to work out extra bits that I need. The only thing I did at the moment was connect the wires to the ignition switch and straight to the starter motor. With the starter motor on its own it seems to work fine. It only seems to be when it goes to engage with the motor. Yes the engine is very easy to turn by hand. I thought theee might be too much compression so took the spark plug out as well but still did the same thing.
Also is there supposed to be an alternator and a solenoid connected? If so is this easy enough to get for this model from a local mower shop?