What is the Reservoir under seat of Yamaha 600r?

SOURCE: 1997 yamaha yzf 600r electrical problems

a jump box is nothing more then a battery with leads on it so where are you connecting it verses the new battery you put in the bike. that doesn't make since unless you are connecting the box right to the starter motor then it be constently running the motor untill you unhooked it. check all your fuses and examine all wire harnesses for damage, burns, or any mellting.

SOURCE: no power to ignition

check the main grounds on the bike, also check the main starter relay.

SOURCE: YZF 600R thundercat Yamaha 1997

the chain broke the countershaft!! wow that's a first.. i really hope its not made of aluminum... its not that strong a metal..i would think a hardened steel more likely, because that thing goes through the entire gearbox and to the other side where the clutch is attached. Its the main drive shaft with the front drive sprocket (countershaft) attached that were talking about...right? This will mean an entire engine case breakdown...we're talking major $$$$$$$.

SOURCE: 2001 yamaha yzf 600r the key is turned to lock

you need to take the pressure off the steering, example, hold the steering just slightly off the full left or right position. Wiggle or move the handle bars slightly and try turning the key. Sometimes there may be too much pressure on the steering lock for it to move, Also some thing eles to try, try pushing down on the key as you turn it. Hope this helps.

SOURCE: i have a 1997 yamaha yzf 600r it starts and runs

Hi and welcome to the site,

Initially, check, clean, bypass or replace the sidestand switch.

Good luck and thank you for asking.