Inline Filters near the carb inlets are Mandatory on these Bikes. Bike's tanks too often have a surprising amount of silt in them... as well as rust, from water in the fuel. Often filling up at a gas station injects a fresh silt load Inground fuel storage tanks (gas stations) are Notorious for this. Notably Aged Metal ones. Also the OEM fuel taps have a Fine mesh filter that typically crumbles in place. Washing out the tank won't be wasted effort, nor will buying a 'decent' quality replacement fuel tap assembly. Unless you like cleaning carbs... indefinitely :-)
When i first started using my LC i also used mini filters. The filters were old and caused no problems. I decided to do a small service on the bike and also changed the filters for some new ones. The bike ended up seizing on one cylinder and the only thing i could find was the fuel filter for that cylinder was partially blocked. I now run all my engines without filters and prefer to clean the tank properly instead of use filters. The carbs on my bikes never seem to stay closed for long so if any debris is found it is removed straight away. In the last three years i have only had one issue with dirt which was causing the needle valve to stay open.
Total novice here, I have rd lc 250, I wish to fit fuel filter, do I fit it between tap and left carb, also can someone give a live link to show best type to buy, thanks and sorry for the stupid question, I'm trying to learn though, all help appreciated.