You need a new starter bendix.
SOURCE: 2006 sportster 1200 low won't start.
If I understand the question, the battery is 12 volts, but if U put a volt meter on it, it should read at least 12.5 if its good. When U fire up the bike, it should go up to about 13 + volts. Often, a new battery needs to be charged.
SOURCE: 1979 sportster.Starter spins but does not engage
I had a 67 & a 77 Sportster 25 years ago & helped a friend build custom fuelers in his shop part-time thru the 90s. I don't have manuals anymore, but I'll help with what I can.
Your starter is under the battery cage and the batt cage is under the seat. You need to disconnect the batt cables & remove the batt. If you have a lot of custom add-ons like lightrails & saddlebag mounting gear you may need to remove some of the accessories to get to your starter.
With the battery out you should be able to see the starter underneath the batt cage although you might not be able to see much depending on your bike's details. The large ground wire attaches to the side of the starter field winding with a bolt and the case grounds it to the rest of the bike. You may be able to remove the starter without removing the cage but most likely you will get better access by removing it first. Depends on the tools you have and your specific setup as to what might be in the way.
There are 2 bolts to remove the starter from the gearbox, but you might have additional stabilizer brackets on the starter to contend with too.
You have one of 2 problems- either the solenoid isn't kicking the gear out to the clutch hub gear or the gearcase has a problem keeping the starter gear from engaging. You'll have to remove the gearcase clutchhub cover to get to the hub gear assemblies.
Most likely to fail is the solenoid and you can often clean up the copper disc with emery cloth or flip it over if badly pitted to renew the solenoid.
Good luck and keep us posted- hope this helps.
SOURCE: 1997 roadking just replaced starter clutch #4 in
No this is not typical! It sounds like when the engine tries to start its kicking back. The force when this happens is great. I've snapped 150HP rated primary belts from this (on a 109HP motor)! Do what ever it takes, adjust carb, timing, different plugs, etc. to get your bike to start with a touch of the starter button. Yes I know this may sound easier than it is. Just get the bike running and starting well with no kick back and you will see a dramatic change in the life of starter and all other parts.
Hope this helps.
JP
SOURCE: 2003 Harley Davidson XL 1200 C Sportster Custom
I would guess stale gasoline or fuel. Try fresh fuel in the tank. If this doesn't clear the problem, you could need to have your carburetor or fuel injection system cleaned. I'm not even sure if they put fuel injection on Sportsters since I don't work on fuel injected bikes. I mostly work on the older bikes like Panheads, Shovelheads, Evos. Not too many Sportsters but have worked on a lot of Ironhead Sportsters. Try the fuel first. It's a cheap fix. Hope it works for you. Good luck with the knee replacement. My wife had one knee replaced and it works great.
SOURCE: 93 HD Sportster 1200 will not start!
Have you tried to bypass the starter button/switch? Use a heavy jumper wire to go between the starter terminal and the positive battery terminal. Turn the key to "On" position, make sure "Run/Off" switch is turn on. Make sure bike is in neutral. I've started guys bikes with coat hangers before when they lost had trouble with the starter button. If the bike starter turns over, you'll at least have a place to start looking for the issue. Also you said you checked the battery, what was the voltage?
Testimonial: "Thanks for the info. I tried your solutions, but bike will still not start. Do not see any pinched wires. When you push the start button the ignition circit pops and then resets. Any other suggestions would be great. Thanks for all your help phinfanls13"
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