Hi I have a 2000 model XR 650R and there is a wirring noise coming from the gearbox behind the front sprocket at about 80kms under a bit of load it goes when I back of it seems to be vibrating a bit as well.
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Re: Noise from gearbox near front sprocket.
Your bike may need the harmonic balancer chain adjusted. Th will notice is noise is very prominent at engine idle and low RPM's. When this chain get lose you will feel the vibration even in the handlebars if it is loose enough.
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HI If your bike is chain drive, look at the chain tension, the chain could be hitting the gear box case. If you primary sprocket is worn the the chain could be jumping teeth If you have a shaft drive then inspect the universal joints and the differential oil level
Hi, Pj25196020 I would love to help you with your engine or chassis noise but I just loaned my brand new pair of listening ears to your local dealer's chief technician so he could take your bike for a test ride and give you his professional opinion and estimate about your noise and repair cost. If you are a little short on "DRACHMA" and a Dealership is not on your list of fun places to visit then perhaps the list below will help soothe your worried mind so you can make an informed decision.
3. Brake Rotors---BUZZ
7. Fronk Forks---Plunk
9. Head Gasket---HISS
10. Hydraulic Lifters---TAP
12. Rear Shocks---SQUEAK
13. Shifting Trans---CLUNK
14. Solid Lifters---TICK
16. Connecting Rods Go---KNOCK-KNOCK---who's there, it's me "*****"
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day. grinding noise behind front sprocket http://www.600riders.com/forum/archive/index.php/t-36395.html Yamaha FZ6 SS 2004 Service Manual OEM parts for Yamaha Yamaha FZ6 Owner Manual
Hi,if it pulls out it must be at the gearbox so the coupling bolt come out of side pulley and the gearbox oil can be lost.so the shaft needs to be removed and bolts on cv joint then you will see a bolt in the center of pulley it should be refitted onto gearbox.hope this helps.regards Conraad
hi you could check the rear sprocket bearing, firmly grip the sprocket try rocking it from side to side, you should not have to much exsess play, have you refited the spacer that fits between the sprocket housing and the wheel? it is easy for this to be omited as it can fall out when sprocket housing is removed from the wheel, this will put undue stress on the bearing inside this hub as the wheel is tightened causing early bearing failure, you will need to remove the wheel again to check this, you may also check the conecting link has not been over riveted causing the link to become tight, check the link manualy compare it to the other links for stiffnes this will also make a clicking noise, is the sprocket a 1 peice construction on the rear, using a scredriver or similar rest it ontop of your swinging arm, rotate the wheel slowly and check for runout in the sprocket,was this noise apparent before you fitted the chain and sprockets, check security of the front sprocket, remove cover and check there has been no contact between chain and cover and or metal strengthening bar, run machine with cover removed to eliminate it from poss cause, hope this helps
Well, you didn't tell me under what circumstances it makes the noise so I'm going to assume it makes the noise constantly or pretty near so.
There are several things that can cause this. The primary chain needing adjusting is the most common. If it gets too loose, it will run the inside of the case at the top front. To check the tension, remove the oval inspection cover. The top run of the chain should have 5/8" to 7/8" up and down play in the middle of the run. To adjust, loosen the nut on the shoe and move it up or down.
Also the sprocket shaft nut that holds the compensator sprocket on could have come loose. This nut requires quite a lot of torque and if someone has worked on it and didn't get it tight enough, I've seen them come loose and the nut rubs on the inside of the outer cover. Drain the oil in the primay and pull the outer cover off. If the nut is loose, remove it and put two lines of Loctite #271 (red) in the nut and retighten the nut to 150-165 foot pounds of torque. You must have a way to lock the primary up and keep the engine from turning to get this much torque on the nut. We use what is known as a locking bar that fits in the sprocket teeth of both the compensator sprocket and the clutch hub.
The other thing is not enough oil in the primay. It should have between 36-42 ounces of oil in the primary.
its not a good idea to ride with an engine noise that you've never had before..you might get stranded somewhere. Did you insure that your chain is not tight...its better to be too lose than too tight, give it an inch up down play, And you have to make sure that the rear sprocket angle is inline with the front sprocket, if not it will where out the sprockets and probably make some kind of noise. Hope you find this info helpful.
The reason could be that the gear teeth have worn out &/or the chain & sprocket are worn out. Both of them depend on the condition of the clutch plates and the oil level in the gearbox.
This problem is common in all Enfield Bullet 350 cc unless maintained every 6 months or so since two levers operate the gears(up & down). The chain sprocket being the main culprit. I have observed this by seeing the Army uses only Bullets & my Dad being an Officer I got plenty opportunity in driving them....................................sodeep
with regard to your question, YES, you may use an OEM rear shock from an 02 XR 650f to your 1992 XR600. Both models have the same link type ro it should fit perfectly.note the placing though, you may need larger bushing to fit the shocks.
hope this helps. if you have other questions, please let me know.