In the bottom left side of the white region where your text is there are three words in green type
Report , Edit , Delete
Hit the delete then when the pop up window shows write double post in the reason and click the Delete / OK button ( shows differently on different systems )
And it will be gone .
As for your mower
Where did you buy it from
how many hours on the mower
If from a private address what did he ground look like hills , scrub did they have a wood heater
Most commercial mowers have a 10 year design life minimum at 25 hours a week .
That is dependent upon them being maintained properly .
Comercial usres do proper maintenance because a break down cost big bucks particularly if you have a 3 or 4 man team associated with that mower.
Residential users rarely ever do their maintenance in the misguided belief because they are only using it for 3 hours a week it will run forever .