please help me

[rickstar]

is anyone near kingston in middlesex. i have been trying to get my gk76a running but i am new to this i cant seem to fix it. dont want to take it to a garage because i wanna learn, just wondered if anyone could try and fix it while i watched(i would pay obviously) all it is, is that when i charge it it starts once off the button but leave it running for 10 mins then turn it off it wont start again the battery will be flat i bourt a new reg/rec and battery but still dont work. and the temp gauge dont work. i am willing to travel. thanks

[morris147]

have you tried bump starting it?

[CMSMJ1]

If you don't own a multimeter then go and buy one.

If you do then do the following checks and report back the findings.

All at DC 20V kind of range

measure the DC volts in the battery sraight after it has been on charge.
the same but the next morning
measure it with the bike running, no lights on.
measure it at 5k revs
Check to see if the voltage rises from 12.5+ to over 15v and is directly related to the revs.

Then switch the multimeter to AC range - up to 100 AC V more than 50 anyways)

Find the wire from the generator and trace it to a connector - open the connector and on the generator side of the wiring you should be able to measure the AC V output of the generator.

Start the bike and do this test twice, once at idle and again at 5k revs.

Do this by sticking each probe into the 3 wires in turn so you meaure them all against each other - it will make sense when you see it. What AC voltage do you get for each "phase" - should have 3 numbers for each set of tests at idle and 5k revs.

If your bike is not running enough to do the tests then get a car battery or borrow a known good bike battery off a friend. Hell..buy a spare one, they always come in handy.

Good luck..

[rickstar]

thanks mate. just bought a multi-meter.only a tenner!. when you were saying about checking the reg/rec when i pull the connector apart do i put the postive probe on one of the little metal pins in the connector, where do i put the negative probe. i hope that makes sense(im hopeless at this!!!) also how do i check the generator. thanks for your help and patience!!!!

[rickstar]

ignore the bit about the generator!!!!

[CMSMJ1]

Ignore the reg rec for now - you need to start at the start...which is whether the genny kicks anything out and if it does, is it right.

After that we'll know what the reg rec is up to..


You'll fix it mate, I had to do it to my bikes..hence why I know what the deal is..

[rickstar]

im sorry i must be doing your head in! lol. the 3 yellow wires that come out of the right side of the engine casing are the wires from the generator. i pull the connector apart were it connects to the reg/rec.(tell me if im wrong) i put the + probe on one of the wires then were do i put the - probe. im sorry for being so thick please bear wiv me your really helping. thanks again

[Variablevalves suck]

If you download the bandit manual from banditalley it will show how to do the tests that CMSMJ1 is talking about and there are pictures that will help.

[rickstar]

thanks. which manual is the best one to download.

[rickstar]

hi, i tried testing it all and heres wot i got: bike runnin no lights=14.25. bike runnin 5k revs=13.9.
then i tried to test the generator but i must be doing sumthing wrong. i was gettin 0.2, i will post a picture of my multimeter if you can tell me wot setting i need to check the generator i would be grateful, and also where the - probe should go when the + is on the wire. thanks