Question about Harley Davidson FLSTF - FLSTFI Fat Boy Motorcycles

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It started as a clicking noise inside the primary chain cover, kept getting louder, especially when at idle...I recently had the 10,000 mi service done, and I suspect it wasn't adjusted to the proper tension--Tom

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If your bike is a Big Twin, your primary chain is supposed to the adjusted to have 3/4 to 7/8 inches of up and down travel when the engine is cold. If it's a Sportster, it should have 3/8 to 1/2 inches of up and down travel when cold. As the engine heats up and expands, the chain will tighten up. The clicking could be caused by the engine compensator sprocket as well by weak springs in the spring cup or by the nut being loose.

Good Luck
Steve

Posted on Apr 03, 2011

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Checking timing chain


They are a bit noisy sometimes, hopefully it's nothing serious, good solid bikes those so you should be good.
Check you have the correct oil in there, if your running a thin oil, it may increase the noise and wearing.
Try this, when its parked up and idling cold (when you start it up in the morning) get a screwdriver or somthing similar place the metal part of the screwdriver on the engine where you think the noise is coming from, then put your ear on the handle, doing this you will be able to pin point exactly where the noise is coming from buy moving the screwdriver around the casting also you can really hear her tick.
do it again when she's hot noting the difference of any. If it continues to get noisier, strip her down and have a look in there, could be just the tensioner/guides.
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Noise primary chain flap contacting inside cover when powering up all gears 2011 dyna wg


Remove the primary cover to see what the problem is. Chain adjuster could be broken, or the compensating sprocket may be loose.

Sep 08, 2012 | Harley Davidson FXDWG Dyna Wide Glide...

1 Answer

Hiya I have noise in the front left hand primary cover [knocking noise] Sometimes it goes away when I pull the clutch in and out other than this the bike runs fine and doesn't miss a beat. [Noise...


More than likely, it's either a loose primary chain or possibly the compensator sprocket. If the noise is at idle, this will probably be the case. Now, if the noise occurs when you roll the throttle on but goes away when just cruising, you may have a bottom end problem. If I were you, I'd disconnect the battery and pull the outer primary cover off. Check the torque on the compensator nut. It should be torqued to 150-165 foot pounds of torque. You'll need a "locking bar" to lock the engine and transmission to keep it from turning in order to apply that amount of torque. Check the adjustment of the primary chain. 3/4 to 7/8 inch with the engine cold. When you refill the primary with oil, do it with the bike standing straight up. Fill to the bottom edge of the outer clutch shell, the bright aluminum part.

Good Luck
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May 22, 2011 | 2003 Harley Davidson FXSTB Night Train

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My girlfriend has a 1999 f150 and recently it started making a scraping noise when you drive it sounds like its coming from the back of the truck. she called me today and said she started driving and it...


that is your rear end it will lock up on you especially on the freeway at speed you need to address this immediatly, these have a funky locking rear end, you can get an upgraded assembly for about 500 dollars plus installation

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1 Answer

Under torque my 2002 1200 sportster sounds like the primary is skiping and make s clanking noise i have checked the primary chain adjustment and its fine it only has 800 mi on it


The large nut on the compensator sprocket may be loose causing the problem. I am a bit confused though. You aren't clear about what has 800 miles on it. Does the bike, a 2002 model, only have 800 miles on it or does the new primary chain have 800 miles on it? Either way, if it's doing this, I'd pull the primary cover off and check everything inside the primary.

Good luck
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Oct 16, 2010 | 2002 Harley Davidson XL 1200 C Sportster...

1 Answer

I have a 2000 FXST while riding about 30-35 mph I noticed a swishing sound coming from the bottom end,sounded like the primary chain was making noise.A few miles later sound got louder, almost like...


The primary chain is supposed to have 5/8 to 7/8 inch up and down play in the top run of the chain with the engine cold. I think it's 1/2 to 5/8 inch hot but I've never set the tension on a hot primary chain.

But, if you say you heard a crunching noise, then the engine started running rough and popping out the exhaust, I'd suspect something to do with the ignition timing. The ignition timing is controlled by the pulses from the crank position sensor on the right flywheel.

If I were you, I'd pull the primary cover, take the compensator sprocket, primary chain, and clutch assembly off, pull the rotor and the stator of the alternator. Then pull the sprocket shaft seal out and take a look at the Timken bearing. While you've got everything off, take the plugs out and turn the engine over and feel for any roughness. It may be time for an engine overhaul. I've only seen Timken bearings fail in one Shovelhead engine but they do fail. Hopefully, you'll find something much simplier and less expensive than this wrong.

Good luck
Steve

Aug 13, 2010 | Harley Davidson FXST Softail Standard...

1 Answer

I have a 2008 softail deluxe purchased in April 2010 with 565 miles when purchased. I now have 1400 miles on the bike and all of a sudden I hear a weezing or 'chain' noise in the primary. I had the first...


You can check this for yourself. Remove the inspection (oval cover in the middle of the primary) and check the tension on the upper run of the primary chain. Of course, do this with the engine not running. It shoud have slack in the chain of 3/4 to 7/8 inch with the engine cold. If it's too tight, it can cause problems.

If this is correct, you can do one other thing. Since you said that you can hear the noise with the engine idling, while you have the inspection cover off, start the engine and let it idle. DO NOT STICK YOUR FINGER IN THE INSPECTION HOLE. You will lose your finger. But, listen and see if your can hear the noise. If so, there are several things it could be. One, you have an alternator in the primary case, the rotor could be rubbing on the stator. Also, I have heard of a starter not disengaging and the "jackshaft" (starter gear that engages the ring gear on the clutch drum) running all the time.

If you can hear this, take it back to the dealer that serviced the bike and have them recheck their work. People are human and humans make mstakes, all of them do. I know I've made my share. Just have them check over their work since it seemed to have started when you had the service work done at 1100 miles.

Good luck
steve

Aug 05, 2010 | Harley Davidson FLSTN- FLSTNI Softail...

1 Answer

I have a clinking noise coming from my primary case on decel .my bike is a 2007 harley ultra classic.there is evedence of the side links being impacted by the compensator. looks like someone hit the chain...


If you did not have the noise before the service, guess what caused it, yep the service. So something was not done properly.
It almost sounds as if the primary chain has too much slack and is hitting the inside if the primary case when in de-cel mode.
I am thinking that the primary chain tensioner has been improperly re-installed or damaged.

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1 Answer

Excessive noise in primary,probable causes?


When is the last time you checked the adjustment of your primary chain? It should be adjusted to where you have 3/4 to 7/8 inch up and down play when checked in the middle of the upper section of the chain when COLD. I like to set the chain at the 3/4 inch setting if possible. As the engine/transmission heats up, the chain will tighten up. If the chain is too loose, it will rub the top of the inside of the inner primary cover when you back off on the throttle.

Also, you didn't say how many miles your bike has on it. You could need to replace the nylon shoe on the primary chain adjuster mechanism if it's worn badly. Also, I've seen a lot of spring cups on the compensator sprocket go bad. Remove the outer primary cover and try to turn this cup with you hands. If you can turn it by hand, you probably need to replace it. This will make a "clop, clop, clop" type noise when idling. While in the primary, check the torque on the engine sprocket nut. It should be 150-165 foot pounds. You will need a primary locking tool to check this as the engine will turn over before you reach that torque level.

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