Question about 2005 Husaberg FC 450

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Chain My chain adjuster bolt is siezed. Anyone have any tips on the best/easiest way to free it up?

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Go buy a can of PB Blaster and soak the bolt overnight. If that doesn't loosen it then heat the thread area (carefully) with a small propane torch. To prevent this from happening again you should as part of your regular maintenance, take the adjuster bolts out and coat them with anti-seize to prevent electrolysis between the steel bolt and the aluminum swingarm,,,

Posted on Nov 10, 2008

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    • 2 Loosen the large nut on the left side of the rear axle with a 32 mm socket and a socket wrench. If more leverage is needed to loosen the nut, use a long-handled breaker bar.
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    • 6 Hold the adjustment bolts steady with a 10 mm wrench and tighten their lock nuts against the chain adjuster blocks with a second 10 mm wrench. Tighten the axle nut to 72.5 foot-pounds with a 32 mm socket and a torque wrench. Check the chain's tension again.

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1 Answer

GZ250 noise problem. Hi I hace a GZ250 marauder 2000 and when i ride up a hill or when i push the bike for more power it makes a clunking metal noise like a cog is slipping.could you help me please.


You might find that is your problem. If you look at the chain cogs and see that the teeth are pointed at the end you need to buy new cogs and a new chain. If the tips still heve straight edges, your chain could be very loose. Either way you need to sort out the problem as a broken chain at high speed is no fun. To adjust the chain, loosen the rear wheel and turn the adjusters to tighten the chain until you have about 3/4 inch freeplay. Make sure that the indicators on the side are against the same marks to ensure that the wheel is straight.

To replace the cogs and chain remove the back wheel and tap down the tabs that are used to lock the bolts in place and undo the bolts. To remove the front cog to will need to take off the cover. If your chain does not have a master link, the easiest way to remove it is to cut it off. Unless you knoe how many teeth your gos have, take them and the chain into a bike shop to get the right parts.

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  • Loosen off the axle nut (B) until it is only lightly tightened. Wind out the chain adjuster bolts (C) evenly on both sides until you reach the desired tension. You will see the top of the chain rise as you wind out the adjuster bolts.on pic below

Once you reach the correct tension, make sure both sides are evenly spaced (using the marker grooves on the adjuster blocks). Squeeze the chain against the swingarm with your hand to hold everything in place and tighten up the axle nut.Tighten up the chain adjuster lock nuts. Now you're ready to ride!
  • Tighten up the chain adjuster lock nuts and thats it buddy measure the chain on the swing anr amr it should be 45mm slack on the swing and arm where the chain slider is 54159bf.jpg

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1 Answer

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Near the back of the rear sprocket assy you will see a bolt facing forward. This bolt, when tightened, tightens the chain and visa-versa. To adjust the bolt, loosen the locking nut a just a little bit then adjust the bolt itself. It is best to make this adjustment while the rear wheel is off the ground, so you can spin the wheel and feel for chain tension. Once you have adjusted the chain tension to where you can just barely wiggle it 1/4" tighten the locking nut back against the frame. It is important to get this nut tight, as if it loosens, so will your chain.

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Loosen the rear axle nut mounting the wheel to the swing arm, then loosen the lock bolt on the top of the chrome adjuster ( left and right adjusters ), then loosen the lock nut on the long adjuster screw. Run the nut about 1/2" down the length of the adjuster screw. Now turn the adjuster screws equally in a clockwise direction to remove the excess slack from the chain. There should be index lines on the swing arm that the single index line on the chrome adjuster is referenced to. Example; If the chrome index line meets up with perhaps the fourth index mark on the swing arm on the left side, the right side should be at the same position. This keeps the wheel in alignment. When the adjustment is finished tighten the axle nut then tighten the adjuster lock nuts and then tighten the lock bolt on top of the chrome adjusters.

Leave some slack in the chain. Mid-chain you should be able to move the chain up and down about one and one half inches. If the chain can be lifted at the rear sprocket it is too loose. Lubricate the chain and the control cables on the bike. What condition are the front and rear sprockets in? The teeth should be bluntly rounded at the tip. If the teeth are sharp at the tip, or getting that way, then the sprockets are way past time to be replaced. Note that a worn sprocket can quickly ruin a new chain.

Please top rate this solution. Thanks!

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1 Answer

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Put it up on your stand lossen the axel and remove the bolt on the bottom of the shock. Then tighten your chain and lift your swingarm up until its horizontal with the ground, then the chain should have almost no play. Not completely tight, but almost no play. Tighten the axel, and the bolt on the shock, and your set,,,

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1 Answer

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Put it up on your stand lossen the axel and remove the bolt on the bottom of the shock. Then tighten your chain and lift your swingarm up until its horizontal with the ground, then the chain should have almost no play. Not completely tight, but almost no play. Tighten the axel, and the bolt on the shock, and your set,,,

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1 Answer

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Put it up on your stand lossen the axel and remove the bolt on the bottom of the shock. Then tighten your chain and lift your swingarm up until its horizontal with the ground, then the chain should have almost no play. Not completely tight, but almost no play. Tighten the axel, and the bolt on the shock, and your set,,,

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