From the outside the sound seems to be coming from the clutch area, not from the rotor/shoe area. **** I’ve always had a clunk sound just after hitting the start button and before starting the bike, and i though its normal. after a year two years i had a noise out of the the primary side although i always change the oil with 20/50 Amsoil and on checking the drain plug it always have a normal/acceptable amount of metal shreds.
Recently a new sound came out of the primary side, just right after I turn off the bike it the sound of clung or like the sound of something resting back to its place anyway, last time the bike was fine while riding then I felt a sound/clunk in the primary side, next morning all of a sudden the battery died on me, kept charging it with the tender but it wasn’t enough, dropped the battery to the dealership and they advised to replaced though it may continue for a week or two, so i decided to give it a try after parking the bike for 3 month, though it has been always my daily ride for the past 2 years. i started the bike and there was a very loud grinding noise from primary side, especially the clutch area. I checked the battery charging and it was reading DC 8.5V while running, I’ll run a stator/rotor test and see results which will probably lead to replacing stator/rotor. My question is while I’m in the primary what else should i look for as my understanding that if the rotor/stator gone bad and there is a loud grinding noise its the result of something there gone bad, but not the source of the issue. thanks
Sounds like you may be describing more than one issue. Inspect your compensator assembly. That is the typical source of “clunking” sounds. Inspect your primary chain & adjuster shoe. Inspect the starter ring gear on the clutch basket and the starter bendix gear. You will need to remove your outer primary cover to begin diagnosing.
Hogger Follow Up Question:
I removed the primary cover and found the compensator nut loose, so my question is ; does tightening the compensator nut will fix the low charging coming out from the stator, since the regulator is not bleeding back and the stator resistance is good? Second; The grinding sound was coming out from the starter shaft being in contact with the starter ring, since I changed the stock.
Tech Reply:If your charging system is not functioning correctly, tightening the compensator nut will not change anything. We suggest removing the compensator shaft extension and the (charging system) rotor for a closer inspection of the rotor & stator. The rotor & stator could have been damaged from running with a loose compensator assembly. If the rotor was tipping, it could have caused damage. Make sure that you are performing a full charging system test. If your stator & rotor are good, you should have 20 volts AC, per 1,000 rpm.
If all tests are good @ the stator plug, you may only have a bad regulator.
Make sure that the regulator is properly grounded and have a secure connection to the main breaker. Inspect the teeth of the starter bendix & ring gears. If they are damaged, they will need to be replaced. We suggest looking into a Compufire kit for replacement.
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