Scarifier?

Yes I know:
It's more a mini electric rotavator Wolf label from Omega Wolf online tools ad seen in national newspaper. Bought one and was supprised the user book said it had to be sent back for service after 40hrs not much time use. So queries it and the noisy geary sound when stones jammed the rotors. I was told the following when I said has it got a gear protection clutch. Yes they said.
Why does it need to be serviced and motor brush change afte only 40hr. Brushes may be worn [appears to be a sealed unit] and the gears have grease which is thrown around the casing and has to be re-distrubuted over the gears. The the bombshell as couple weeks ago found they went in to receivership last July 09 kiss goodbye to warranty. Decided to service it. Stripped it down to find:.......No clutch........No grease/oil and gears made of NYLON and the noise was the worm gears tearing up the helical gear when they stopped through stone jamming.. You can't believe MP's you can't believe Ministers, you can't believe the PM now can't believe retailers so who the hell do you believe, except mother - in - law. he He!