I suspect you are not mechanically inclined, so I will provide step by step instructions, and in some cases will "state the obvious"... because I have to assume you may need the obvious stated. ;-)
The Russian is just like a Kayfun 3.1... which the Hcigar is a clone of. The
SvoeMesto PDF owners manual applies to one and all.
First - note the depth of the 510 contact pin ("center pin screw" 1a) relative to the threaded portion of the 510 connector. Measure it if you have the tool, or even photograph it... for future reassembly reference.
Ref. page 3: (using a screwdriver that fits the slot well), remove "center pin screw" (1a) and "insulator" (1b) from "body of collector tank" (1c).
Ref. page 4: you then unscrew the "collector tank" (1c) or end cap from the base (2a). You may need rubber "jar grippers" to obtain an adequate grip. Although I have not, some have found it necessary to apply heat or cold... and some have resorted to using pliers.
Ref. page 4: (using a screwdriver that fits the slot well), unscrew the "air duct" screw (2h) from the "positive pole" (2f)... or what is more commonly referred to as the
positive block. This will free the "positive pole insulator" (2k) for replacement.
At this time, inspect and test fit all parts that are relevant to the replacement of the "positive pole insulator" (2k). If all parts fit correctly, proceed.
Reassembly - read and understand all instructions before beginning:
Upon reassembly, make sure the positive block is aligned square and not touching, what is commonly referred to as the negative block, or the atomizer will be shorted to ground. Reinstall and tighten the air duct screw (2h) firmly, but do not crush the positive pole insulator.
Lightly lubricate both 1a and 1b with Vaseline, e-juice or food safe silicone grease. Insulator (1b) must be pre-installed fully into body of collector tank (1c) prior to installing center pin screw (1a). Slide 1a into the 1b/1c to create the "1a/b/c pre-assembly".
Reinstall the "1a/b/c pre-assembly" to the base (2a), screwing it on sufficient to compress the o-ring seal. This only needs to be tight enough to seal the o-ring. Over-tightening will make future disassembly and maintenance difficult.
Notes: The center pin screw (1a) should never be tighter than (or even as tight) as the air duct screw (2h).
Repeated removing and installing the atomizer on a battery can cause 1a to turn 2h, resulting in the positive block (2f) loosening and making contact with the negative block.
Referring to your
first instruction above for screw final position - screw 1a into 2h. Carefully continue to tighten screw, bearing in mind - it must be tight enough for electrical continuity and to seal the collector tank. It does not have to be "tight". Due to variations on this aspect of the design, it may bottom out or it may not.
That's it.