Help wanted with nissan vanette !

hi can any one help me i have not long bought a nissan vanette cant find a repare manual ,i want to change the oil and check other bits but cant get into top of engine ,how do i get the seats out the way to do this ,, please any one that has same van let me know by txt or email, thank you from steve, hi am selling part worn sizes below 165/70/14 1of 205/70/14 3 of all new tyres 50pound ono 185/60/15 1 of 195/55/15 1of 195/65/15 1of 205/55/16 2of 215/50/17 1of 225/45/17 2of 255/35/18 265/35/18 1of 225/50/20 1of 275/45/20 1of all tyres are 5mm and 6mm prices are below 14inch 10pound 15inch 10pound 16inch 15pound 17inch 15pound 18inch 15pound 19inch 15pound 20inch 40ono pleace telephone me as i dont cheak email that mush tel 07549506538 or 01592652358 thanks col difrent sizes dalay CV JOINT , 2 BRAKE CYLINDERS , SET FRONT BRAKE PADS , FRONT WHEEL BEARING , OIL FILTER , ENGINE OIL FLUSH , ALL BRAND NEW STILL IN BOXES AND MAY FIT OTHER HYUNDAI CARS ONLY 30 NO OFFERS , NEED TO GO . Full set of alloy wheels with tyres- approx 5mm tread, Some light kerbing but still very presentable and will get you through an MOT no problem! I have 4 pirelli p slot alloy wheels orginal off a mk1/mk2 golf - wheels have been pollished a few times -well looked after -good tyres