Suzuki gn250 how to replace a fuse - 2001 Suzuki Burgman 250

There are diagrams here, but you should really invest in a Service Manual.

https://www.google.com/search?q=suzuki+GN250+cdi+wiring+diagram&rlz=1C1QJDB_enCA643CA644&sxsrf=AOaemvLUAhcqR4FWmN60JBkbqRVDCydK3g:1630280315527&source=lnms&tbm=isch&sa=X&ved=2ahUKEwio9dy4s9fyAhVMF1kFHeoHALoQ_AUoAXoECAEQAw&biw=1920&bih=937

..

27.4 seems a little high to me
most bikes are around 21-24mm depending on the bike
is it over flowing on side stand ? when at 27.4mm

here is link to a full workshop manual
it is for suzuki
but scroll down you will find a gn250

sorry forgot the link
copy and paste this link to a new browser
https://www.carlsalter.com/suzuki-service-manuals.asp

Try pop starting the bike. If it's fuel injected, you will have to have your battery working

Not user serviceable -buy a new lock.

Yes . There is starter relay , ignition switch , fuses. Why did you replace the 1 fuse ? Was it blown ? What circuit was that fuse on ? When you installed the new battery did you ensure it was charged ? ( batteries at the store sit for very long periods and they sell em dead). When you put the new battery in did you accidentally touch the cable to anything making it spark/short ? Did you put - and + on correctly the first time ? Even for a split second on the wrong battery post will pop fuses. Check to see if you also have any circuit breakers along with fuses, relays. Some have them. They look like a relay with a little red button. If you do push the red button back down. Suzuki, Yamaha , Kawasaki all have a real good electrical system and have good fail safe systems. You also say it has new wiring . Does that mean you or someone else replaced all of the wiring harness ? If so then why ? If replaced the harness I'd start checking the grounds. A wiring harness has many grounds all through out the harness . 1 un connected ground and most likely nothing will work.

It is not a plate it is actually stamped into the neck on the right side between the upper and lower triple tree.

I’m happy to help further over the phone at https://www.6ya.com/expert/al_e83b1941f9c0f302

sorry, dont have a solution, but was curious if you ever figured this problem out, i have the exact same issue

Yes these bikes have a relay with a fuse mounted right inside. Follow your red battery cable away from the battery it runs right into this relay which is the starter relay. it will have a cover that does not look like a cover but has the main fuse under it - should be a 40 amp fuse.

Most probably you have to change the cable as it has snapped.