Good evening, I bought a used (defective) lawn tractor today. Ulky part, I don’t even have an idea of which brand the device is, at the front of the “engine hood” stands only in green writing Spider. The engine (a Tecumseh with 7hp, I suspect TVXL 170) does not start, the reason is probably that the outlet valve does not open. The shock (or whatever the exact name is) behind the valve lid does not move. fnet and closes wonderfully. I am honestly not the over-screw, but I would like to try the repair. How do I proceed now best? Has someone possibly had a similar problem or an idea where the defect might lie? With a few pictures of the engine, the tractor in whole I unfortunately did not photograph, but I can gladly submit if necessary. Greetings Woerschtel