Where do I get spare part for the Remington MS2 390 shaving foil in Perth ?

On model F5800, the foil removes by firmly grasping on each side and lifting straight up to detach. Once the foil is removed, you can access the blades. They are remove by simply pulling them straight up.
Parts for this model can be found at shaveroutlet.com
ShaverOutlet com Search results for f5800

Have you tried looking at a site like eBay or amazon? There is also always the possibility that you might need to get a new shaver if you really can't find the parts you need.

You will find replacement screen for model F3790 at shaveroutlet.com. See link below

http://shaveroutlet.com/shaver-replacement-parts/remington-sp61-df-da-series-foil-screen-p-231.html

You will find an instructional video at shaveroutlet.com. Click on link below then scroll down for video

http://shaveroutlet.com/shaver-replacement-parts/remington-sp-290-foils-and-cutters-set.html

The button on the front releases the long hair trimmer. It is for cutting hair that is too long for the regular shaver foils to shaver

You will find the user manual for model MS2-390 available at shaveroutlet.com. Click on the link below and scroll down to the 'user manual' link near the item price

http://shaveroutlet.com/shavers/remington-ms2390-microscreen-500-shaver-p-564.html

You will find a helpful video demo at shaveroutlet.com. See link below

http://shaveroutlet.com/shaver-replacement-parts/remington-sp94-ms3-series-foil-and-cutter-set-p-238.html

remington SP390 replacement screen foil and cutter blades for remington f5790 replacement parts.

Remington F4790 replacement parts is remington SP290 replacement screen outer foil and blades.

The Remington ES-1000 was probably the best slot-head shaver ever made by Remington. I cannot believe that the market demand was so low as to prompt a cancellation of production. I believe that the production run was limited to about 4 years or so. I have 8 of these shavers and keep a couple old Remington slot heads around as well. The ES-1000 was not perfect. The batteries were way too small and stressed so battery life was poor.You could not buy individual blades as you could with past Remington slot-head units.Also, the edge of the head was too exposed and sharp and when used for body shaving would tend to cut the skin.Slot-head shavers are superior for body shaving and for skin that is suseptible to shaving bumps.They are also great for young men that are prone to ingrown hairs.My guess is that the Norelco 3 head has taken it's place. Those shavers actually use 3 small slot heads. Rumor has it that shavers.com is trying to have a new slot head manufactured in Asia.