Ok. First, get the manual from the download links on the sticky thread above.
Also get a feeler gauge if you don't have one.
Your engine is the same as the older Ranger 2.5.(WL Turbo)
Go to page 91 and follow the instructions. It is very easy but if you're not mechanically inclined come back here and someone will try to guide you.
EDIT: Good point, Damdan- drop this into Ford's lap.
V8 Defender 90 pickup. Lexus, Spitronics, 33" KL71, beadlocks, +2" Terrafirma, ATB's, 3.75 CW&P, 1.21 TC.
Series IIA 88" pickup
Disco 1 300TDi
Subaru impreza WRX
V8 Shamrock Cobra 350
MG TF160 VVC ZandF remapped