The versatool trimmer starts and runs very fast and nice when reved up without the head or any attachments, but when you put a string head or cultivator attachment on it, it won't rev up as high and spin fast enough to cut grass or do any good. Does it need a new piston ring maybe?
Doesn't sound like piston and ring problem. Sounds more like the flex shaft that connects to the engine may have an end that is worn not allowing for the extra load when you connect the attachments. Check the ends of the top flex shaft.
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It sound the unit either in an overload mode or losing power when the tool attached.
What the engine size in cc? Is it easy start? Any visible oil leaks around the cynder head or else?
Does the choke set at full open when it run at max speed?
it runs good, but when i press the throttle, it will cut out, or it will only half rev
Stihl trimmer engine runs great. Lots of power. The head, however, doesn't move at all when you pull the trigger, and then will slowly start to turn. Never turns fast enough to actually cut grass.
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