when i do my 45cc i dont open it but i protect the fuel pipe? sorry it isn't the good word i put a brake cable in and i put dough joined in the thread
but a bnr tank it isn't useful to do the treatment but you can if you want use to degrease with hyydroxide of sodium wtih water and after clean it with lot of water and dry it with a hair dryer i don't think it can be rusty now but with chinease it can be possible (joke)
the bnr it is a shame do say that but the bnr is rubish all pieces aren't done well and some after change supplier too! you can't drive whith out troubles if you like troubles take you 45cc but it isn't troubles of the parts of the engine
one bnr on a french forum has lots of pieces of 3800 because it hasn't done well same form the brakes has broken!! it is very sad because it was renaissance of the velosolex !!
the better now it is a french 3800 or nl one
