Stihl MS 311 User Manual - Page 56
To reduce spring tension, Replacing the Rewind, Spring
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8.7 Replacing the Rewind Spring - Troubleshooting, b 3.4 The rewind spring is correctly tensioned when the starter grip sits firmly in the rope guide bushing (arrow) without drooping to one side. If this is not the case, tension the spring by one additional turn. When the starter rope is fully extended, it must still be possible to rotate the rope rotor another full turn before maximum spring tension is reached. If this is not the case, reduce spring tension since there is otherwise a risk of breakage. To reduce spring tension: Pull the rope out, hold the rope rotor steady and take off one turn of the rope. - Install the fan housing, b 8.2 4903RA139 TG 4903RA140 TG The replacement spring, in a spring housing, comes ready for installation. - Wear a face shield and work gloves to protect your eyes and hands from injury. - Remove the fan housing and the segment, b 8.2 - Relieve tension of rewind spring if necessary and remove the rope rotor, b 8.4 - Remove any remaining pieces of old spring. If the rewind spring can no longer be properly tensioned, install a new spring. Even a worn rewind spring is still pre-loaded in the installed condition. - Place a blanket over the work area and pull the rewind spring out of the fan housing. 2 1 - Lubricate the replacement spring with frame with a few drops of STIHL special lubricant before installing, b 14 : Position the replacement spring with frame in the fan housing - the anchor loop (2) must be above the lug (1). : Push the rewind spring with frame into its seat (arrow) in the fan housing. The frame slips off during this process. The rewind spring may pop out and unwind. - Remove the frame. MS 311, MS 391 55
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