I recently bought a 1998 Suzuki Lt-F-250 without a fuel pump. the one I got I have no idea wear all the hoses go so I need some help, also when I disconnect the petcock hose how much fuel should run out because it is a vacuum pump. I can email you the pictures of the pump with numbers on each hose connection. Right now I have spark, and will try to turn over if I pour gas in the carb

 

I have an 94 LTF250. When I picked it up it too was having fuel pump issues. I simply ran a new line from the petcock to the carb, bypassing the pump. It has been fine since.

 

Yes it is vaccum pulsed.fuel only come out line when engine is trying to start.take line off and if fuel is coming out when engine is turning over and stops when engine dtops turning over, if fuel isn,t flowing when doing this then pump is bad.but you can try an remote tank and if quad will run. if so than i would put an aftermarket pump from tucker rocky 30bucks,,,,, will work great.Good Luck..