Great stove
1 Empty tank of any fuel and rinse several times with hot soapy water
2 Rinse tank with plain hot water and drain as much as you can
3 Rinse tank with about 100mls of meths, this will soak up any residual water
Get a bucket of water ready, pump up the empty stove and immerse in the water (not over the burner) and this will show if you have any leaks
You really should replace the lid washer and burner tube washer plus the pump leather, spares are available from
http://base-camp.co.uk/Contactu.htm
Give Mike there a ring and he will sort out all you need, Just tell him the model number. Don't prime with hexy or paraffin, you can, but its really sooty and stinks. PM me if I can help further or nip over to
http://www.spiritburner.com/fusion/fusionbb.php? I've been know to post a few times over there myself, the lads are a friendly bunch.