Thanks Pleiades - I appreciate your response.

While I was hoping the advice would be, "just whack in a new filter and some oil and you'll be right... ", I figured there'd be those critical things to keep on top of. I'm not mechanically very confident but you're right in that if the instructions are detailed enough then most monkeys should be able to have a crack.

I need to get my hands on a Haynes manual. Not easy to source in Oz it seems as even the local on-line retailers don't stock it and have to order it via the UK. Unless I'm missing something. Via Ebay they are $47AUD + $18 p&h from the UK and our local retailers/importers are not much cheaper. Halfords in the UK are out of stock by the looks - pity I didn't jump on the cheap deal when it was offered...

Anyway, I'll weigh it all up and decide whether to have a crack myself or place my trust (and coin) in the hands of a dealer.
Cheers... Dan