Common faults
From Owner's Document
All items are for the 400/450, they may also be for the other models.
To confirm differences check out your bike's sector at the bottom.
Light blue for 470/501, light yellow for 550/650.
Husaberg 400/450 Models,
Cam follower bearings pre '03: They all go eventually. They break up and enter the engine ('02 only). It's due to the viscious ramp speed of the cam creating pressure on everything around it such as follower, camchain and cam bearings. Cure is to change to 6204RS2 which are sealed bearings and retain their grease permanently. The other subsequent cure is to fit a better cam such as an LX2.
Stator/ignition: This is the SEM ignition used until end of '03. Can be no spark or runs and stall's moments later-see electrical. Stator's can lose varnish, go rusty and crack their plaasticoating. You’re lucky or you’re not! It's heat related (Lineaweaver). The copper windings ahave a poor insulation coating and earth out. Sparks does an amazing job of rewiring them. Check out this UHE Forum Thread.
Oil leak from cylinder head-rocker cover joint: Oil seeping around front: Either the breather tube dowel is loose or oil is seeping from head/rocker interface: Plane the rocker cover and and/or the top of the cylinder head as both can distort. For the rocker cover use a pane of glass, P600 wet 'n dry, soapy water and some clothes pegs. Smear the P600 with soapy water and then turn the head/cover 90 degrees every 6 strokes. You can even aerosol spray black paint on the surface to see how it's going.
Waterpump weep hole leaks: This is a very common problem on Husabergs of all ages. It can happen because the bearing has gone U/S, the seal has gone. If coolant is leaking from the same hole: the waterpump seal has gone. The waterpump seal often goes when fitting the sidecover when it 'nips' and the cure is to get a proper tool for aiding the fitting. For a tip on weep hole oil leaks look here.
Camwheel ('02) if aluminium-they wear too quickly so go straight to steel.
Sprague bearing if you continually start the bike from cold with the leccy boot, the sprague will 'spin through'. The whole system (battery, starter, sprague) was beefed up for '04 and no more problems. Try to start it with your foot and only when warm go to the leccy boot. The whole story of upgrading is told under 'upgrading'.
Kickstart seal: oil weeps from the boss even when 10 minutes old! Uprated in ‘03+ to a fat 'O' ring.
Sidestand plates: Wear oval. Eventually the end hammers a hole in the bottom of the tailpipe. You'll need to have a top hat bush made and have it done properly.
Clutch pipe: Splits and weeps. One fall, it leaks at top flexy knuckle. Upgraded '03, but can also use a KTM250F pipe.
Waterpump pipe off: Just pops off on left cover. Needs a taller barb/lip. Build up lip.
Crankshaft snap '04: The oil drilling in the big end was excessively large causing some cranks to fail. For '05 the drilling was smaller cancelling the chance of failure.
Crankshaft nut comes loose: Appears to be a problem from '04 to the present. Engine becomes excessively noisy. The nut bottoms against the thread and not against the crank gear allowing the gear to remain slightly loose. Add a washer under the nut.
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[edit] Husaberg 470/501 Models
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[edit] Husaberg 550/650 Models
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