Stihl hs80 hedgecutter. starts ticks-over splutters badly on acceleration new carb kit, fuel pipes. clean filter.apparently no spark arrestor on this model
If you have over 200 hours on this FS 80 then you may need a valve adjustment(yes this 2-stroke has valves).
if you wanna try to do it yourself it should be set @ 0.1mm @TopDeadCenter. my advice is take it to any stihl dealer and let them do it. its scheduled maintenance
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Your dealer is right. Gas is not a carbs best friend. every time you fuel dirt gets in the fuel tank from the air. This eventually blocks air and fuel passages and check valves inside the carb. That is the reason. Carbs wear out like anything else. Check the price of a carb compared to a kit. Some Stihl carbs are reasonable.
You did not indicate whether or not you have compression now that you have changed out the gaskets and piston rings. If not, it seems to me that the problem could be a) cracked head or block, b) bad valve(s) or even c) a warped head.
Check the boot between the carb and the cylinder, it could be an air leak. also check the compression. If the piston rings are damaged then it wont have the compression to pull the fuel through. Could also be a damaged fuel line, or plugged filter.
Just make sure you have good fuel flow to the carb fuel inlet from the gas tank with a good rate of flow.
When you finish it will work great if you did it properly. You will for sure have to adjust the fuel mixture screws after the re-build.
Thanks for choosing FixYa,
Kelly
Did you clean the pilot & main jets in the carb & set the float height to standard? There is also an over flow in the carb which should stop fuel flooding into the air filter - did you check? Make sure there are no splits in the fuel pipes & the smaller vacuum pipe that goes from the side of the auto fuel tap, also check pipes connect well By your description it sounds like the carb is filling very slowly, 1 bowlful would get you around 2 miles & then plug would be dry when trying to start it, leaving it overnight the carb would fill up & flood air filter due to a leaky fuel tap
Ride safe
Bike-Doc
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panilling9
borrowed working carburettor---my machine ran perfectly. The
cutting out on acceleration problem is definitely a carb issue
panilling9
borrowed working carburettor---my machine ran perfectly. The
cutting out on acceleration problem is definitely a carb issue
try another spark plug stihl likes theirs set at .020 see what happens
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