Oil pressure light on European Z400J four cyclinder.

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Maybe someone tracked the bike?  I must say, though, that the safety wire job wouldn't pass muster in the aerospace industry where I work (not that motorcycles fly or anything.)  

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              Yes I did notice the wired sump plug after I had bought the bike but I'm not too concerned as it's not the sort of bike you would use for racing. I's the only bolt that has been wired. I just put it down to an enthusiastic DIY er who got bored on a rainy day but I don't suppose I'll ever know why.. If I can find a suitable recepticle for the oil I plan on taking the pressure switch out and having a root around inside it. It'll save me £30 if i can get it going again. Anyone have an exploded diagram?

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Interestingly the engine number doesn't match the frame number. 

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Interestingly the engine number doesn't match the frame number. 

They never do on KZ bikes.

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If the oil pressure switch thread is M10 x 1, you can use a VW Golf/Rabbit 1 oil pressure switch for 5 €.

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              Yes I did notice the wired sump plug after I had bought the bike but I'm not too concerned as it's not the sort of bike you would use for racing. I's the only bolt that has been wired. I just put it down to an enthusiastic DIY er who got bored on a rainy day but I don't suppose I'll ever know why.. If I can find a suitable recepticle for the oil I plan on taking the pressure switch out and having a root around inside it. It'll save me £30 if i can get it going again. Anyone have an exploded diagram?

I wasn't concerned as such - just pointing out something I thought was interesting.

"Not the sort of bike you'd use for racing" - I respectfully submit there is no such thing.

Normally I use the diagrams on Partzilla or CMSNL, but neither seems to have the I4 400.


 

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"Not the sort of bike you'd use for racing" - I respectfully submit there is no such thing.

 

               You haven't ridden one of these 400's have you.....? 

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"Not the sort of bike you'd use for racing" - I respectfully submit there is no such thing.

 

               You haven't ridden one of these 400's have you.....? 

The US (twin) version, yes - please see my sig block.

Also, as a further counterpoint, this:

 

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With the wire off you should have 12V or there about's on that wire, it works like the neutral light the switch provide the ground return to put the bulb on. The bulb is fed from the brown (main power after ign switch and gets a return from the blue with red tracer wire through the oil pressure switch to ground. your wire is a repair poss due to the elimination of the side stand safety swtich on non UK models.

As previous poster suggested with engine stopped the switch is closed allowing current flow and when the engine fires and you get over a few PSI oil pressure it OPENS stopping the current flow and the light goes out. check the brown wire from headlight to tacho oil light and the Blue with red tracer strip comming back to headlight shell then it is in the loom from there till it goes into the chain cover with the neutral wire (green) and the alternator wires (yellow)

check with a multimeter the voltage on your repair wire (disconnected) ign on, in the photo and check with resistance setting wire removed, the oil switch closed (low or no resistance engine stopped) and open(high res) with engine running.

good idea to remove sump and clean out anyway if you do not know the motor.


Nice JT Harlty pic on the Profile pic.