Rick the Ratchet
CB750 Member
Hi Guys .
I've had my CB 750 Nighthawk about six years now and love it .About a year ago it wouldn't get in gear and the shop decided it was the clutch so put a new clutch in .It wasn't ,it was transmission,and they said they thought wasn't worth doing because it would cost over £1000. But they kindly didn't charge me for the clutch .
Anyway after she sat in shed for a while I decided to rebuild her myself .I stripped the casings apart by turning whole engine upside down to get at the transmissio,so not touching the head,pistons at all .In end it was a pawl spring on the selector drum mechanism that was broken so shop didn't have a clue what they were talking about .
Well,got her back on road and she was good ,until other day .
Went to start her and kept blowing Ignition fuse,the 15 amp one .So stripped all harness and tidied wires looking for any shorts etc .Put everything back ,all works ,no blown fuses.Think was solinoid to starter motor .But tried jumping across terminals to see if had spark ,and no spark .
The coils have a green connector and a black one ,can anyone advise me where the black and white wires go on each coil ,and other wires to coils .Could it be the CDI unit .Do you think that until I put a new Starter Solinoid on it will not spark .Im really confused now,because it's not blowing fuse anymore ,but don't think I've got a spark .
Any comments and advice would be most helpful.
Rick The Ratchet
In the UK .
I've had my CB 750 Nighthawk about six years now and love it .About a year ago it wouldn't get in gear and the shop decided it was the clutch so put a new clutch in .It wasn't ,it was transmission,and they said they thought wasn't worth doing because it would cost over £1000. But they kindly didn't charge me for the clutch .
Anyway after she sat in shed for a while I decided to rebuild her myself .I stripped the casings apart by turning whole engine upside down to get at the transmissio,so not touching the head,pistons at all .In end it was a pawl spring on the selector drum mechanism that was broken so shop didn't have a clue what they were talking about .
Well,got her back on road and she was good ,until other day .
Went to start her and kept blowing Ignition fuse,the 15 amp one .So stripped all harness and tidied wires looking for any shorts etc .Put everything back ,all works ,no blown fuses.Think was solinoid to starter motor .But tried jumping across terminals to see if had spark ,and no spark .
The coils have a green connector and a black one ,can anyone advise me where the black and white wires go on each coil ,and other wires to coils .Could it be the CDI unit .Do you think that until I put a new Starter Solinoid on it will not spark .Im really confused now,because it's not blowing fuse anymore ,but don't think I've got a spark .
Any comments and advice would be most helpful.
Rick The Ratchet
In the UK .