Hello,
I would like to ask for your help before I order a new petrol pump. Maybe I missed something during my investigation.
The problem with my Sherco St 300 from end of 2013 is that the carburetor does not get fuel or gets too little.
I first checked the vent of the fuel tank - one-sided valve ok, fuel hose - ok, fuel tap - ok. Just to be sure I started the engine with the unscrewed fuel tank to be sure the reason was not to vent the fuel tank
I disassembled the fuel pump - cleaned - I have not seen any signs of wear or damage.
I started the engine. After a while the fuel stopped flowin. I disconnected the fuel lines and fed the fuel directly to the carburetor using a syring. From disconnected fuel supply line from the pump to carburetor fuel does not flow. During engine operation in a normal situation petrol pump should pump fuel ?
Do you have any ideas what else should I check?