Servicing and keeping an eye out

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.

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Husaberg 400/450 Models

Adjusting tappets: If racing adjust every 2nd ride. Take the rocker caps off and remove the plug, next, put the bike into second/third gear and then turn it over via rolling it along the workshop. When both sets of tappets are closed (wait for the inlets to close-now stop!): use a rod through the plug hole to try and make sure that the piston is as near to TDC as you can get. Slip back into neutral and put back on the stand. The alternative way is to keep the bike on the stand and remove the ignition cover then turn the engine with a 17mm spanner and again stop the piston at TDC. Undo both tappets together and loosen, then adjust gently you should feel the screwdriver tighten "lightly" with your finger tips and from here back-off 1/8th-of-a-turn (or try joeUSA's tool) and hold tight whilst tightening the lock nut. Check it again and if the 1/8th-turn is less: actually turn the screwdriver back against the nut slightly as you're locking. See this katoom for excellent photos.

Oil: If racing change every ride or second ride. A good 5/50w synthetic. 900cc for me. Delo 400 is very highly recommended after extensive testing (Lineaweaver).

Oil filter: Not necessary for 4 or so rides. See metal filters at Better than new.

Air filter: As per conditions. In dust, 2 hours and you’d benefit from a back-up. Makes a nasal roar.

Brakes: Pads last a long time. Performance goes off slightly as they get over 1/2 worn, adjust lever out.

C&S: Not too bad. Can reverse front sprocket. 13T eat your front chain guide up though!

Fuel tank: Difficult to fit. Put grease on all four rubbers.

Spokes: Replaced. Mine stretched or broke easily. Check regularly.

Forks: Air in them. Should bleed Phillips screws immediately after a ride. Wheel free first.

Wheel bearings: Worn once maybe even twice per season. From alloy to SS spacers? I pull the inner bearing seals out and re-grease.

Cotton reel rubbers: Maybe good for two seasons.

Tampon filter: Metal filings-clean carefully. This is how you check if you have the ‘big C’ in your 'big H'!

Bleeding brakes: Difficult. Try a new pad or a plate put in to keep piston back, bleed upwards.

Reed valve: Excessive blowing if stuck open. Undo 2-screws inside engines LHS. Clean reed and loctite (Simon).

Bleed clutch: Reverse bleed. From bottom up, using a KTM syringe. Mineral oil only or the seals fail.

Water temperature: Easy way to check. Fit a McMaster Carr temperature strip.
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Headrace nut: Difficult to get right. As per video: pinch, then 1/4 turn back or to 20Nm.

Kickstart lever: Goes dry, wears rapidly. Remove dowel on the bench, clean and repack with grease.

Brake sliders: Go dry and corrode. Pull rubber sleeves back and copper grease once per year.

[edit] Husaberg 470/501 Models

[edit] Husaberg 550/650 Models