• 4 Stroke Husqvarna Motorcycles Made In Italy - About 1989 to 2014
    TE = 4st Enduro & TC = 4st Cross

  • Hi everyone,

    As you all know, Coffee (Dean) passed away a couple of years ago. I am Dean's ex-wife's husband and happen to have spent my career in tech. Over the years, I occasionally helped Dean with various tech issues.

    When he passed, I worked with his kids to gather the necessary credentials to keep this site running. Since then (and for however long they worked with Coffee), Woodschick and Dirtdame have been maintaining the site and covering the costs. Without their hard work and financial support, CafeHusky would have been lost.

    Over the past couple of weeks, I’ve been working to migrate the site to a free cloud compute instance so that Woodschick and Dirtdame no longer have to fund it. At the same time, I’ve updated the site to a current version of XenForo (the discussion software it runs on). The previous version was outdated and no longer supported.

    Unfortunately, the new software version doesn’t support importing the old site’s styles, so for now, you’ll see the XenForo default style. This may change over time.

    Coffee didn’t document the work he did on the site, so I’ve been digging through the old setup to understand how everything was running. There may still be things I’ve missed. One known issue is that email functionality is not yet working on the new site, but I hope to resolve this over time.

    Thanks for your patience and support!

Clutch Reservoir Capacity

F1000

Husqvarna
A Class
Yesterday riding my clutch disengagement stopped working. Stop a few minutes and it worked. Rode again and it completely stopped disengaging. Flushed hydraulic system out today with new fluid. Noticed hose was in contact with engine, moved it away. Filled reservoir, but when I put cover on the seal pushed most of the fluid out. In the past seals have been able to be flexed away so it didn't force fluid out. With this no way it stayed out all the time. I don't know how the puny little resevoir has any fluid in it with this seal forcing it all out. Is this common.
 
I am sure someone must have topped off there clutch fluid in the past. Like i said on cars and such the seal can be pressed in and it will stay retracted, then pop out as the fluid drops over time. The bike reservoir seal would not stay retracted, so a large amount of fluid it pushed out when you put the cover on. Others experiencing this? is there a trick to keep more fluid in the reservoir? Don't want to be on a long ride an loose my clutch action again, next to no fluid above the pickup hole.
 
If the reservoir hadnt been topped off or refilled for a while it isnt rare to have fluid drop out. It might be a sign of an external leak, if there is nothing obvious externally there might be a dodgy slave cylinder seal. On both of my bikes that have had hydro clutches engine combustion products (black smelly sludge) could be seen in the resiorvir when the slave failed.

About your original question, I think the rubber liner is there to remove the air from the reservoir. This is required on a bike as it sometimes goes upside down and it limits air from going down the line (I guess thats what its for). The effective capacity of the actual reservoir should only be a matter of mls.
 
when you refill make sure the master cylinder is level.
then fill it leaving 4mm airspace at the top-
then put the rubber seal and cover on. (if you left 4 mm at the top- the seal wont push much if any out, if you filled to the top- it will seem like alot comes out)


the 4mm airspace-must be there for expansion and the "self adjustment" of the hydrolic system. As duggoey points out the airspace is separated from the fluid by the seal-

yep watch the level- diagnose leak if you continue to loose fluid.
 
I think my initial problem could have been caused by having the clutch hose touching the engine and getting to hot, possibly heating the clutch fluid too much. I adjusted the steering stops so i could get more turn, but it was bumping the hose, so I tie wrapped it back some, this may have caused the hose issue, or maybe it was already there, not sure....but it no longer touches the engine. I was working the clutch pretty hard, as it was very tight single track riding. Once the engine cooled, even when shut of for 30 seconds it would start working again. Then drop out when I rode, it was a hot day. The fluid wasn't low judging by my inability to fill it with the seal protrusion, so I think no leak. My guess now it was the hose on the engine, but haven't ridden it yet again. I did crash a few times prior, so that may have presented an opportunity for some air intrusion, who knows, I crash every ride so this is not unusual, but i do know the resevoir is really really small, too small for my taste.
 
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