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Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 26026
Experience:  Service manager and technician for all brands of engines with 40 + years of experience.
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New clutch fitted to Stihl fs400 strimmer but cutting head

Customer Question

new clutch fitted to Stihl fs400 strimmer but cutting head rotates when pull cord is pulled

still waiting for answer

Submitted: 1 year ago.
Category: Small Engine
Expert:  Curtis B. replied 1 year ago.
The clutch shoes have to be against the drum/ Were the shoes loose? The shoes should only touch the drum when engine is increased.
Customer: replied 1 year ago.

the clutch was brand new when fitted straight from the box so the shoes were not loose.

Expert:  Curtis B. replied 1 year ago.
Was the clutch drum easy fit, not binding?
Customer: replied 1 year ago.

yes it was easy to fit no binding

Expert:  Curtis B. replied 1 year ago.
Clutch has to be touching the drum or the drum would not be turning the head.
Expert:  Curtis B. replied 1 year ago.
Take drum off and see what has happened.
Customer: replied 1 year ago.

what am i looking for and what should i do so that the clutch does not touch the drum

Expert:  Curtis B. replied 1 year ago.
Clutch has to be rubbing the drum. Look for contact between the two parts. Drum should turn free.
Customer: replied 1 year ago.

I took the clutch off again today opened the two small bolts and pushed the shoes in and re tightened the nuts back up, it seemed ok when i pulled the starter with the ignition off but as soon as it fired up the same thing happeneed again, is there somethig else i can do to keep the shoes from touching the drum.

Expert:  Curtis B. replied 1 year ago.
The shoes should be held in with springs.??
Expert:  Curtis B. replied 1 year ago.
And move out when revs are increased.
Customer: replied 1 year ago.

springs are in

Expert:  Curtis B. replied 1 year ago.
They have to hold shoes away from the drum!
Customer: replied 1 year ago.

theres nothing i can do to the springs they are fitted into the retaining holes there is no adjustment that can be made s far as i can see so why do the shoes touch the drum.

Expert:  Curtis B. replied 1 year ago.
Defective clutch!

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