ok, oil change, here we go.
tools needed, an 8mm allen key, wrench or socket. a 17mm spanner or socket. a drain bowl, old tray or cat litter tray's are best and a filter cup wrench or strap wrench.
about 3.5 litres of 15/50w oil, oil filter, sump plug washer, o ring for strainer cap(poss not need) and 2x o rings for strainer tube (again, poss not need)
run the scoot until the oil is warm or perform this after a ride, plce on centre stand with drain tray under and undo the 8mm sump plug, drain the oil and discard the alloy washer. undo the 17mm headed, black alloy cap to the rear of the engine on the l/h side, there are 2 of these. the alloy is easily marked so take care but a black marker pen can dress up the annodising if needed. check the cap's o ring, if damaged replace. next, remove the strainer from where the cap was and clean in a suitable solvent to remove any debris and again check the o rings for damage and replace if needed.
use your filter tool and spin off the filter cartridge and discard the filter, using the new filter, prime it a little with your fresh oil, wet the rubber seal with oil and spin it on, the torque setting is 11nm or 8 feet pound but as a rule, hand tight and half a turn.
oil up the o ring of the strainer tube and replace it, followed by the cap and this is tightened to 15nm or 11 feet pound.
next up is the drain plug, using a new alloy washer, turn it in then 28nm or 20 feet pound, wipe all excess oil from plugs and filter then remove the dipstick and fill with about 3 litres of oil and run the engine, i run them at idle until the fan cut's in then leave for an extra minute, stop the engine and check the level with the dipstick and top up as needed. i did this to mine at the first 600 mile service and i have had no oil warning light's on and i get the tick come up with the OBC oil check everytime.
on the sport version, you will only need to remove the silver kick panel and remove the rear screw from the panel lower to that to gain access to the dipstick, the GT version you have the little panel to remove for the dipstick but i think ( don't quote me on this) that the lowers might be in the way to get to the strainer and poss filter.
i used the recomended castrol 15/50 and like i quoted, i have never had any problems and now have 1500 trouble free miles showing.
hope this helps you guy's