Work
====
    * Check wheels (skewers) are tight
    * Check brakes work and are not loose (levers and callipers)
    * Check handlebar is tight and not loose
    * Check gears are working and changing properly
    * Check and adjust tire pressure

Cleaning
========
 - Pressure washer is not recommended as it can also remove greese from wheel bearings...


Lubricants  --  https://www.bikeradar.com/advice/buyers-guides/chain-lubes/
==========
 - Types
    * Dry lube: in good dry weather, doesn't attract much dirt and can be often, then, reapplied without cleaning.
	=> 1-Step hybrid: mostly degreaser with a bit of dry lube inside. Ineffective.
    * Wet lube: better for messy winters, but gets also dirtier...
    * Fat/Grease: cheap and works well in all conditions, but gets really dirty.
    * Wax: Needs really clean system and takes a few hours to settle
    * Ceramic: expensive promoted as best of 2 worlds dry/fat but unclear if true.
 - Containers
    * Spray is difficult to apply precisely and may damage breaks if hits it occasionaly.


Parts
=====
 - DeGreaser
    * паста для мытья рук: Handwaschpaste
    * Finish Line Speed Clean (Yellow not Orange) 
 - Lube
    * Finish Line 1-Step Cleaner & Lubricant (daily), Red Dry Lube (for trips), Green Wet Lube (for extremely! wet weather, winter)
    With green it is important to clean extra to avoid dirt attaching.

 * V-brake 70mm
 * Chain, 10-speed: 
    Stevens/6x X-cross Lady	10-speed / 112 links 
    KTM/Maranello		10-speed / 114 links
    KTM/Evelina			 9-speed / 116-118 links
   Variants:
    Shimano  (9-speed): HG53
    Shimano (10-speed): HG54 => HG74 => HG95 (XTR)
    KMC X10-Grey (73) => X10-Silver/Black (93). Lightweight models with L/SL.
    Sram


Major
=====
 - Bottom bracket (Hallowtech II for all bikes)
    Shimano XT BB-MT800
 - Chainrings (Maranello) -- https://www.reddit.com/r/bicycling/comments/dh1gz3/lets_talk_cranksets/
    It is what is known as 'BCD' and is a measure of the distances between the chain ring bolts.
    I looked up your crankset model. If you definitely have Shimano FC-T551 then the BCD is 104/64. The two largest rings are 104 and 64 is for the smallest ring.
    - either 36/48 rings for Shimano T551
    - or T551 / T6010 (DeOre) => T781 / T8000 (XT). With 175mm pedal and 48/36/26 rings