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fz600 electrical problems


khayman
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Two nights ago I was riding down the motorway when all of a sudden the bike

starts backfiring and slowing down.

I get to the side of the road and it will not turn over, the battery was almost dead

in the morning so I bump started.

There is an electrical sound coming from under the saddle when I try to start it up,

checked the fuses but they are ok.

Battery dead now but will not bump start - any ideas?

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Two nights ago I was riding down the motorway when all of a sudden the bike

starts backfiring and slowing down.

I get to the side of the road and it will not turn over, the battery was almost dead

in the morning so I bump started.

There is an electrical sound coming from under the saddle when I try to start it up,

checked the fuses but they are ok.

Battery dead now but will not bump start - any ideas?

It sounds like your charging system has failed. If I remember right your generator/alternator is located under the carbs.

You may find that it is the regulator/rectifier ,which is in the generator unit, that has failed. It may be cheaper to replace with a complete second hand unit but check with your yamaha dealer for parts availability

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It sounds like your charging system has failed. If I remember right your generator/alternator is located under the carbs.

You may find that it is the regulator/rectifier ,which is in the generator unit, that has failed. It may be cheaper to replace with a complete second hand unit but check with your yamaha dealer for parts availability

Thanks for the info. Is there an easy way of checking this before buying a new regulator? At present there is no battery left, if I were to charge it separately would this mean the bike would then start?

I bought the bike a few months ago as I had not ridden for years, The plan was to buy a new bike over the summer holidays (the fz cost £400 so I dont want to spend loads on it when I was planning on ebaying it next week).

Otherwise ill just put it up as a non runner.

Thanks

Steve

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Thanks for the info. Is there an easy way of checking this before buying a new regulator? At present there is no battery left, if I were to charge it separately would this mean the bike would then start?

I bought the bike a few months ago as I had not ridden for years, The plan was to buy a new bike over the summer holidays (the fz cost £400 so I dont want to spend loads on it when I was planning on ebaying it next week).

Otherwise ill just put it up as a non runner.

Thanks

Steve

I should have mentioned when I try to start the bike the rev counter clock starts moving all over the place

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When the engine is running above idle, the generator will produce about 14.8 volts to the battery. If you are not seeing this, investigate. It will not charge a damaged battery, so check the battery first.

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Thanks everyone for the advice, just wd40ed all the terminals and looked at the voltage regulator, on one of the

terminals from the vr, there was a pin that looks in bad condition - I wded this and tried a bump start - the bike started

staight away. Left the bike on idle for 10 minutes and it now starts fine.

All good for now.

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