Hey

So I’ve got a klf300 which has been running fine up until a few months ago.

the problems seem to be electrical related but im not sure where to start.

when pressing the push start button I get a grinding noise coming from towards the back by the battery so I’m thinking maybe starter relay is faulty. But when I start it up with the pull cord it starts up ok but then doing anything like pressing the horn, turning lights on, pulling breaks or the throttle and the engine cuts out. It’s like it’s loosing power to it. So I’m wondering if the voltage regulator is at play?

any ideas?

the battery shows just under 8.10v when not running 7.4 when running and when pressing the horn for example it drops down to 5.4. And lights drop down to 3.4.

 

The first thing i would try is charging to battery and see if that helps.

 

Yes, charge battery up, it is pancake flat. Once running again, re check voltages, they should be more than when engine isn't running, typically 12.7v stopped, 13.7v and moving about with revs when running. If voltage drops or stays stationary, you probably have a faulty regulator. To be certain, check the battery power to the pos and neg leads at the regulator plug, (some Kawasakis have two pos leads, one grey, through ignition, one direct from battery). I use a high wattage test lamp for this. Then check the three leads from the alternator, testing any two in turn with a resistance meter, they should have the same resistance, and none of them should be earthed. If all that tests out, fit a new regulator.