WARNING: This page is about a different car, the 2008 Mitsubishi Lancer. However, it is still accessible from the selected car via links, so may be relevant.
Using the special tools, MD998917 and MB990842, indicated below, remove the 5th speed gear and 4th speed gear.
Fig 1: Identifying 5th Speed Gear And 4th Speed Gear With Special Tools (MD998917 And MB990842)