Make certain you have read the Acco Apollo Horizon 2 Overhead Projector manual thoroughly before attempting the Acco Apollo Horizon 2 Overhead Projector bulb replacement on your Acco Apollo Horizon 2 Overhead Projector. Without touching the surface of the Acco Apollo Horizon 2 Overhead Projector lens, remove the lens tube and set it aside. Write down the number from inside the tube's inner lip for the purpose of make, model or serial number for any future need to buy Acco Apollo Horizon 2 Overhead Projector replacement parts. Your bulb should be sitting just beyond the opening of the Acco Apollo Horizon 2 Overhead Projector body. Reach in with two fingers and disconnect the Acco Apollo Horizon 2 Overhead Projector bulb. Reverse these steps to re-assemble your Acco Apollo Horizon 2 Overhead Projector. This concludes the Acco Apollo Horizon 2 Overhead Projector review - be sure to read the entire Acco Apollo Horizon 2 Overhead Projector manual.