Makro warranty very limited

I bought a Ryobi lawnmower on the 2 October 2014 from centurion makro. I used it only 4 times, during the 3rd time it was idling very low and i could not get the revs up. So slow it was struggling to cut. I took it to Makro in December 2014 and they informed me they cannot swop it, it has to be sent for repairs.<br> So it was sent in December for repairs. Repair ***.<br> I then got a repair quote for plugs / filters ect. of R388.00. I disputed it, but they said the warranty does not cover certain parts. how can plugs / filters be finished after 4 times usage in 2 and a half months??<br> I got the mower back today, it works now but I do know I will have to fix it again soon as it idles funny. I am goning to dumb it as its a very bad product with very limited waranty. PLEASE DO NOT BUY THIS PRODUCT.<br> <br> Thanks.