Thanks for providing those details, charmaine. We still need some more, though. I now understand that you have a modern Rover, with Rover's Chinese engine, not one of the older ones with a Briggs engine. However because this is a largely undocumented engine, we will have to get the necessary information from you.

First, there is the point Bruce made. You said you have been turning the mower over so you can clean it underneath. Depending on how you are doing this, it is likely to result in a lot of oil leaking out. Generally there is only one way you can tilt a 4 stroke engine legitimately, and even then the machine will not enjoy the experience. Here is the way Rover's owner manual instructs you to clean underneath the mower:
[Linked Image]

The next step I recommend for your investigation of the oil leaking problem, is to follow Rover's instructions. Keep that mower the right way up at all times except when deliberately draining the oil as part of the required annual oil change service. Most likely the problem will then disappear, and the mower will run better as well. If this does not cure the problem, we will need pictures of where the oil is coming out, and your description of what you were doing to it at the time the oil came out.

Please note that the mower's engine oil must be maintained at the full mark on the engine's dipstick, just like the oil in a car engine. Since oil has been spilling out, the level will now be low and needs to be replenished immediately. To check the oil level, park the mower on level ground. Unscrew the dipstick from its housing, wipe it clean of oil, then rest it lightly in its housing without screwing it in. Then draw it out again and look at how high the wet oil mark reaches up on the bottom of the stick. Add a small amount of oil through the dipstick housing if necessary, and recheck the level until it is accurately on the full mark.