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Old 05-10-2005, 03:33 PM
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procut procut is offline
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Abnormal Trimmer Vibration

My Stihl trimmer has developed some sort of a vibration problem. I can hardly hold onto it if it is running above 1/2 throttle because it vibrates so bad. I looked it over, and didn't see any obvious problems. Also, it was brand new mid summer last year, so it doesn't have a whole lot of use on it. Any suggestions?
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Old 05-10-2005, 09:04 PM
cariboulou cariboulou is offline
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has the shaft been bent at all? perhaps the cable inside is rubbing on the bent part of the shaft tube. Also, take off the cover to the bump head. Sometimes one side will get clogged with sand or dirt and cause a slight vibration with me. Il take off the cover in the field and clean it out a little and does it. i hope this helps.
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Old 05-10-2005, 09:32 PM
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bugspit bugspit is offline
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a unevenly wound trimmer head will cause this but, in light of your forum name I suspect...no ..I expect, you have checked this.
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Old 05-10-2005, 09:44 PM
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tinman tinman is offline
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mine did that 2 seasons ago.... shaft had been crimped slightly (no idea how)...that caused something else to go bad ..... $136 to fix
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  #5  
Old 05-10-2005, 10:08 PM
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dvmcmrhp52 dvmcmrhp52 is offline
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Driveshaft would be the first thing I'd check.
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  #6  
Old 05-11-2005, 12:04 AM
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fixer67 fixer67 is offline
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where is the vibration at? Down low or up high? I have seen the springs on the clutch break and unbalance it and cause a lot of vibration
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Old 05-11-2005, 11:34 AM
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procut procut is offline
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Thanks for the replies. I checked the bump head and nothing seemed out of the ordinary. I'll look at the shaft/cable this afternoon.
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  #8  
Old 05-12-2005, 07:39 PM
cariboulou cariboulou is offline
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You might feel the tube shaft gets hotter and may turn blue where the cable shaft rubs on the inside of the tube.
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  #9  
Old 05-12-2005, 07:59 PM
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sheshovel sheshovel is offline
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shaft bent,something happened to it,was it crunched in a truck bed under something?,did you bang it on the ground real real hard,?Did you lend it to someone else or allow them to use it?
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  #10  
Old 05-13-2005, 07:25 AM
joe stihl joe stihl is offline
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Grease the drive shaft, especially if it's a cable. Check the clutch springs. While you're there put some grease inside the clutch drum.
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