Pentax MX Top Cover Removal
Sam Gustafson and one other contributor
Last updated on Jul 8, 2026
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Community-Contributed Guide
An awesome member of our community made this guide. It was not created by iFixit staff.
Introduction
Go to step 1 ↓Removing the top cover is often the first step in a repair. There are not too many issues that can be solved by just removing the top cover but you can inspect the wiring and make sure power is getting to the light meter. Most repairs will require further disassembly.
What you need
Tools
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Remove the lever cap. The cap is reverse threaded.
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Lift off the advance lever.
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Remove the collar beneath the lever.
Ask FixBot
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Set the ISO to 100 and the shutter speed to 1000.
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Remove one pin head screw.
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Lift off shutter speed dial.
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Remove the collar beneath the dial.
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Installation Notes: Make sure that the tab on the shutter speed resistor mates properly with this slot on the shutter speed dial.
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Place a tool in the fork of the rewind shaft. Turn the rewind knob counterclockwise to loosen it.
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Remove the lock ring underneath the rewind knob.
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Remove the cover plate.
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Remove two M1.7 x 3.2 mm screws.
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Remove two M1.7 x 2 mm countersunk screws.
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Lift off top cover.
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The release cable pin in the shutter button is loose and may fall out.
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To reassemble your device, follow these instructions in reverse order.
