The pull cord is frayed and I have bought a replacement but now I've looked at the mower I can't work out how to take the plastic cover and then the pull cord unit top off to fix the new cord on. Doesn't look like they are held on with screws or allen bolts...heeellpp...the grass is going wild! Petrol mower SP470.

Clare J, June 2011

I've got a HP470 but it's probably the same for the SP.
The plastic cover is held on with 2 torq star shaped screws. One is hidden under the sticker on the plastic cover. Press around with your thumb until you find the indentation and then peel the sticker back.
The other screw is at the bottom of a column at the top left of the plastic cover as you look at it from the front. You'll probably need to get the grass out from the bottom of it first.
Finally, remove the oil cap, taking care not to get grass into the oil.

scott, August 2011