Question about Honda CM 125 C Motorcycles
Im asumeing its a older model with no electric start have you tryed bumping it ( push it down road clik in to gear engine starts up ? if not try it will it start like that ? if so its proberbly something to do with the kick start shaft / gear teeth i would expect to have to go in the right hand engine caseing to find the issue and repair hopefully something just poped out of place
Posted on Oct 30, 2012
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Posted on Jan 02, 2017
Hard to say depending on how hard the bike fell etc. If you damaged the stator in the fall that would be one explanation for it not starting and the battery not holding charge. If it's got fuel and spark it will start. If you have a reasonable amount of fuel in the tank the petcock won't create a problem unless the fuel is off, but there should be enough in the carby bowl/s to get it to fire and run. Any problem of excess fuel in the combustion chamber after a fall should dissipate in a few hours. Try and ascertain if you have a spark by taking a plug out, reconnect to the lead and put it against the head so it earths and kick over. Don't touch the plug - nasty current and dangerous, especially if it's CDI. You will soon see if you have spark or not. If the spark is OK it will be a fuel problem. Also, if it has a kill switch check it wasn't accidently bumped into the off position in the fall. Good luck
Posted on May 25, 2010
SOURCE: My horn doesn't work(my bike's
To fix your horn is easy, there are some excellent pills out there.
The bikes horn though is different, you will need a small test light or multy meter,
Check if there is power to the wire plugged onto the horn, ignition on
The horn needs direct power to one terminal, and the other terminal shorts to earth through the button.
If there is power and the other wire connects to earth, when the button is pressed you probably need a new horn( not that expensive)
If there is no power check the fuse
If the second wire doesnt connect to earth when the button pressed there may be a problem in the handle switch.
There can also be a problem in the wiring if it has been damaged in the steering stop etc
Sometimes the horn can just be stuck and a small tap on the horn with the button pressed can start it.
If the horn button it a bit corroded in the contacts, hold it in and wiggle it a bit, can clear the corrosion.
Sometime easier to just check the fuse then buy a new horn, before chasing down the wires and switches
Posted on Jun 04, 2011
Testimonial: "Thanks a million, I got the pills, they really work, I wonder can you overdose? ;) As for the bike, I'll check out all that you mentioned, thanks"
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Make sure the key and kill switch are both in the "on" position. Ensure that the proper starting procedures for your bike are followed. Is it in neutral? Clutch pulled in? Gas in the tank? Then try to start your bike. Does it turn over? If not, check to see that the battery is properly connected and the terminals are not corroded. If they're loose or dirty, clean and tighten them. Then, using a voltmeter that measures ac/dc and ohms, check to see that your battery has enough charge to crank the engine. If not, replace or charge your battery and try again. If it still doesn't turn over, there may be a loose connection between your battery and starter; a bad ignition or starter switchl or a bad safety relay. Check a repair manual for proper testing procedures for your bike, as each motorcycle differs.
If your bike turns over but doesn't catch, check to see that it's getting fuel. If the bike has a fuel petcock, make sure it is in the "on" (or, on certain bikes, "prime") position. Then remove the main fuel hose and check to see that fuel is flowing freely. If fuel isn't getting to the carburetor or injection system, your bike won't run. If that's the case, your problem is likely something in the fuel system. If fuel is flowing freely, reattach the lines. If it's not, check to see if the fuel filter is clogged, if a line is pinched or if the petcock is working properly. One way to determine if the problem is in your fuel system is to put a few drops of fresh gas into each spark-plug hole, replace the plugs and turn the bike over. If it starts and then quits, the problem is likely in the fuel system.
If you're getting fuel and the bike turns over but still doesn't catch or start, check the spark plug or plugs. Start by pulling off a spark plug wire, then removing a plug using the spark plug socket supplied in your bike's toolkit. Now inspect the plug. It should not be wet (usually caused by fuel, when the plug is not firing) or coated in carbon/burned oil deposits. Now check to see if the bike is getting spark. Although you can get a special, insulated set of pliers to hold the plug, there's a "quick and dirty" method for this: After reattaching the plug wire, lay the threaded part of the plug against the engine (not over the plug hole, as the spark could ignite any fuel that is blown out when you try to start it). Now, making sure you're not in contact with the engine or plug, hit the starter. You should see a nice blue spark. If you don't, make sure the threaded portion of the plug is touching the engine (but the electrode is not) and try again. If you still don't see a spark, you either have a bad plug or a problem with the electrical system. Check to see that all the ignition wires are properly connected and that you can't see any cracks in the wires. If the wires are cracked, they should be replaced. If you're still not getting spark, it's time to consult a repair manual or call a mechanic.
If you've got fuel and spark, ascertain that your bike is getting enough air. Start by pulling off the air filter. If it's too dirty, you won't get the proper mixture of air and fuel in the carburetor or injection system. If it's clean, check to see that the air box is properly connected-- a loose hose or air leak can feed too much air into the system. If your bike is equipped with a choke, ensure that it's able to move freely and is not stuck in the "on" or "off" position.
If you've followed these steps and still can't get your bike to run, call in an expert. If you think you've narrowed down the source of the problem, describe the steps you've taken to point the mechanic in the right direction.
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