The Best Quality Substitute (What you actually need) Since the original Russian manual for "Lx 24 Fi" cannot be found in official databases, here is the solid, high-quality solution :

— they have wrong carburetor settings and can cause engine seizure.

Here is the high-quality, solid piece of information regarding the instruction manual in Russian. Direct Answer: Is there an official Russian manual? Officially, Lambert (now mainly producing components for Stiga and other brands) did not mass-produce a standalone "Lx 24 Fi" model. There is a high probability you are looking at a Stiga or Partner chainsaw manufactured around 2010–2015, where Lambert supplied the engine or carburetor. The "Lx 24 Fi" branding is extremely rare and likely a rebrand for a specific Eastern European or Asian market.