Honda lawn mower

[jjb1333]

Hi
I have a Honda petrol mower self propelled
I am getting a terrible clattering noise when the machine ticks over
When i engage the blade ,The noise goes away
Its only present as i say when it is ticking over
Any ideas please ?

 

[Burnerman]

There's a wee tip from me to this post in the gardening section, jjb
John