Hello all together<br><br>Our engine has 1300 run hours without any problems. But nevertheless I have a few questions: <br>1) Is that what must be done: let the engine run every 15-20 hours for 10 to 20 minutes with full power?<br>2) We have problems to switch off the engine with the key. This problem apears only if the engine runs bevore switching off a longer time in the idle mode. Then we must switch off the engine over the "red lever" at the engine. If the engine runs under normal load and after we can switch off the engine, with the key, without any problems.<br>3) we need around 1/2 Lt. Oil per 10 hour run time. Is this the normal consumption?<br><br>Thanks for all responses and I hope, my English can be understood...<br><br>Hanspeter