trouble starting 07 k9

oscar

Member
I'm having trouble getting dog to start. Battery has been checked, its on a maintainer/charger. When i crank it up it tries to turn then horn goes of real quick and stops cranking. Also noticed the hazard light blinking. It was starting fine last week. Thanks for any help. :rant:
 

V

Guru
That does sound like a sign of a battery problem. Some others will chime in with a little better knowledge.
 

BigDogBro1

Made in the USA
Yeap -- That's the sign of a battery not delivering enough voltage to the EHC while cranking.

Make sure all battery connections are tight as well.
 

blacktopper

Active Member
Have you been having trouble with the speedometer not registering the speed after you start it the last few days? If so I would replace the battery
 

oscar

Member
is it safe to jump start bike w truck. it started rt up. I bought new battery and charging it rt now. Thanks for info. Got an Interstate battery from Sam Club for 70. Everyone else was bout 100.
 

Warden

Member
is it safe to jump start bike w truck. it started rt up. I bought new battery and charging it rt now. Thanks for info. Got an Interstate battery from Sam Club for 70. Everyone else was bout 100.
NO! do not jump start it.
 

jbotts

Member
I've jump started mine before at a gas station when my voltage regulator stopped charging the battery. I was out of options and had no choice. You can get away with it if you are extremely careful, but get that positive clamp touching the frame and it can get real expensive real quick, as in a blown up EHC.

Here is a battery maintenance primer written up by the dealer here in St. Louis on their website:

Battery Maintenance

Let me start off with saying that the December 2008 issue of American Iron Magazine has a great article about this very subject. It will go into a much more exhaustive/technical explanation that what we will here, but I wanted to discuss a few things that will help in keeping your Big Dog happier.

1. Battery Tender. I cannot stress this enough. These big inch motors demand a lot from a battery when she cranks over. Big Dog’s new 40 amp charging system does an outstanding job re-energizing that battery to full charge, but sitting in a cold garage or for a long time without riding will begin to erode the cold cranking capability of the battery. A battery tender puts a nice trickle charge on it and keeps it to it fullest capacity. Without a battery tender, I see battery’s lasting about a 1 1/2 years. Now I know, your buddy’s Harley has had the same battery for 20 years, but to steal a phrase from the past, “This ain’t your father’s Buick.” A 4″, high compression engine makes a battery work overtime. I tell most of my customers, the time your old battery will give up the ghost is when you’re in Defiance, MO and it’s about 1:30am. No battery tender, replace the battery each Spring to be safe. Or for less money, buy that battery tender and you’ll be amazed how much more service you’ll get from that battery.

2. Starting the beast is very cold weather. In short, a cold battery does not have the cranking amps that a warm or hot battery has, no matter how old/new the battery is. Warm battery, high cranking amps. Cold battery, she’s going to crank slowly and sometime not at all.

3. Jump Starting. You cannot be too careful when doing this. One wrong slip with the positive cable gets very expensive. Mucho care must be taken, and I like to always have someone helping/holding the cables securely. Nuf said.
 

woodbutcher

Mr. Old Fart member #145
Staff member
if it is absolutely necessary to jump, use a jump box if possible. if it must be from a car/truck, do NOT have it running.
 
Oscar-you say you bought your battery at Sams club for 70 bucks, Make sure it has high CCA or you will be buying a new one in a short time:2thumbs:
 
:hi: Lots of good Batterys out there, but also high prices. I run a Big Boar Battery which serves me well. Even Harley has some good high CCA batterys!:cheers:
 

V

Guru
270 was the highest cca available there. Who makes a good battery and where can i get one.
Best bat for the buck many of us have purchased is a Harley AGM. I paid I think $109 for mine. I haven't heard a much good about the interstate (but you always only here the bad never the good).

Also check your charging system to make sure you're gettin at least 14 volts back to the bat when running. My problem was a bad VR. Kept the bike hooked to the tender all the time so to go out and ride for a hour was no problem. went out for a 6 hour day and had to push start. Luckily for me Full House had a VR in stock. :2thumbs:
 

woodbutcher

Mr. Old Fart member #145
Staff member
in my experience, interstate tends to over-rep their product. bought a 320 cca interstate and after 2 of them were no good, found out they were nothing more than somebody else's rebadged 270 cca.

270 is bare minimum and will not last.
 
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