Husaberg 04 650fe when at operating temp this bike is unstopable, it does everything well. . BUT. . it will not fire up cold short of running the battery flat 3-4 times n kickin it over for half hour. . .everything mechanical & electrical has been reset & or replaced. . . .help! its doin my head in!

Add water to the battery. Enough to cover the plates in each cell.
The battery may be on its' last legs. Charge it with a 1 or 2 amp charger, If it won't take a charge and hold it then it's time for a new battery. Just because a battery has SOME power does't mean it has ENOUGH power to give a good spark after sitting overnight. If you have already replaced the battery it was't specifically stated in the original posting.



Sorry if I stated only the most likely cause of the starting problem. I understand how frustrating a bike can be. The information below is a compilation coming directly from the 2004 Husaberg service manual.



Install a new stock spark plug and set the gap to 6mm. Clean the carburetor paying special attention to the idle circuit. Move the jet needle clip one notch lower. Clean or replace the air filter. Install new intake manifold gaskets to eliminate any possible air leaks. Use the choke when starting. Re-set valve lash to manufacturers specifications. Check compression with a thought to lapping the valves to get a better valve seat. Get a spray can of starting fluid. Check the high tension lead. It should be clean and a tight fit. Check all other electrical connections. Be sure they are all clean and tight. Check the connection of the CDI, the pulse generator may have oxidation. Be sure the battery terminals are clean and tight as well.



Check the de-compression cable adjustment. If the engine is flooded then use the de-compressor. Check the Hot Start device. It should be pushed inward. Check to be sure the accelerator pump is functioning properly. As a result of engine vibrations, the throttle valve, jet needle and needle jet are subjected to increased wear. This wear may cause the carburetor to malfunction. Therefor these parts should be replaced every 200 hours of operation.



I have 40 years experience.



Add water to the battery. Enough to cover the plates in each cell.
The battery may be on its' last legs. Charge it with a 1 or 2 amp charger, If it won't take a charge and hold it then it's time for a new battery. Just because a battery has SOME power does't mean it has ENOUGH power to give a good spark after sitting overnight. If you have already replaced the battery it was't specifically stated in the original posting.

Sorry if I stated only the most likely cause of the starting problem. I understand how frustrating a bike can be. The information below is a compilation coming directly from the 2004 Husaberg service manual.

Install a new stock spark plug and set the gap to 6mm. Clean the carburetor paying special attention to the idle circuit. Move the jet needle clip one notch lower. Clean or replace the air filter. Install new intake manifold gaskets to eliminate any possible air leaks. Use the choke when starting. Re-set valve lash to manufacturers specifications. Check compression with a thought to lapping the valves to get a better valve seat. Get a spray can of starting fluid. Check the high tension lead. It should be clean and a tight fit. Check all other electrical connections. Be sure they are all clean and tight. Check the connection of the CDI, the pulse generator may have oxidation. Be sure the battery terminals are clean and tight as well.

Check the de-compression cable adjustment. If the engine is flooded then use the de-compressor. Check the Hot Start device. It should be pushed inward. Check to be sure the accelerator pump is functioning properly. As a result of engine vibrations, the throttle valve, jet needle and needle jet are subjected to increased wear. This wear may cause the carburetor to malfunction. Therefor these parts should be replaced every 200 hours of operation.

I have 40 years experience.