Poulan Adjustment Screw Retainer part# 530-038593 has an inside diameter of 3/16". This retainer is used on the chain adjustment screw of the following chainsaw models; 1900, 1950, 1950LE, 1975, 1975LE, 2025, 2050, 2055, 2050LE, 2050WT, 2055LE, 2075, 2075LE, 2075C, 2075OC, 2150, 2150LE, 2155, 3175, 2200, 2250, 2250LE, 2350, 2375, 2375LE, 2750, 5775, 2900, 3050, 3350, 3450, 3500, 3600, 3750, 3800, BH2160, BH2160LH, P3314, P3314WS, P3314WSA, P3416, P3516PR, P3818AV, P4018, P4018AV, P4018AV-BH, P4018WM, and P4018WT. There may be models that use this part that we do not have listed here. Please refer to your owners manual or a parts breakdown for your model, to assure that this is the correct part for your machine, before you order.
