slow starter

ghostridery2k · May 7, 2008

i just finish instaling used engine in my 87 k75,it started slowly yesterday,after 15 min of runing i shut it off for a moment and when i try to restart it starter just slowly crank the engine,restart fail.for some strange reason starter will continue cranking even key was off and boiled the battery.i try with new battery today and still slow crank.starter gone bad?jump power to the starter bypassing relay still slow crank.

DrPaul · May 8, 2008

ghostridery2k said:
i just finish instaling used engine in my 87 k75,it started slowly yesterday,after 15 min of runing i shut it off for a moment and when i try to restart it starter just slowly crank the engine,restart fail.for some strange reason starter will continue cranking even key was off and boiled the battery.i try with new battery today and still slow crank.starter gone bad?jump power to the starter bypassing relay still slow crank.

Sounds like the starter relay contacts have welded themselves together. This will require disassembly and repair or replacement of the relay. A low battery will do this especially when the engine is slow to start.

pglaves · May 8, 2008

Lift the rear of the fuel tank and remove the cover to the electrics box.

Rap smartly on the relay located in the rear left corner of the box - the one with two heavy wires bolted to lugs on the edge of the relay.

Install a fully charged battery - or a new one as needed - and get on with life with the bike.

BUDDINGGEEZER · May 8, 2008

If you have to buy a new relay http://www.texasindustrialelectric.com/relays.asp

Roughly 1/2 price. 75amp.

Ralph Sims

kayseventyfive · May 8, 2008

PGlaves said:
Lift the rear of the fuel tank and remove the cover to the electrics box.

Rap smartly on the relay located in the rear left corner of the box - the one with two heavy wires bolted to lugs on the edge of the relay.

Install a fully charged battery - or a new one as needed - and get on with life with the bike.

How about desassembling the relay and cleaning the (presumably) pitted and carboned-up contacts. Can this be done?

BuddingGeezer said:
If you have to buy a new relay http://www.texasindustrialelectric.com/relays.asp

Roughly 1/2 price. 75amp.

Ralph Sims

Jusst to be sure, is it THIS ONE?

http://www.texasindustrialelectric.com/relays_0332002150.asp

.

pglaves · May 8, 2008

Kayseventyfive said:
How about desassembling the relay and cleaning the (presumably) pitted and carboned-up contacts. Can this be done?

.

Yes it can be done. Prying will break the seal or plastic - and you can access the contacts. I'm not sure it is necessary. Often one tiny spot sticks, and when freed serves trouble free for many miles/years.

I think every classic K bike owner is required to learn once: cranking with a low battery will stick the relay. After that we get more careful about this and don't do it again.

Every spring (after winter storage) I get at least a dozen calls or emails asking about this problem.

BUDDINGGEEZER · May 9, 2008

Kayseventyfive said:
How about desassembling the relay and cleaning the (presumably) pitted and carboned-up contacts. Can this be done?

Jusst to be sure, is it THIS ONE?

http://www.texasindustrialelectric.com/relays_0332002150.asp

.

I believe so.

Ralph Sims

ghostridery2k · May 10, 2008

i just install brand new battery and bike start right up no problems,i guess my other battery was week.thanx for help evryone, ........y2k

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