Stihl BR 550 Technical Guide - Page 10

Page 10 Technical Information 08.2005 4.2 Special servicing tools To be procured for the first time for the STIHL BR 500, 550, 600: Part name Stop screw Sleeve Part number Use 4282 890 2700 Block crankshaft 5910 893 1704 Fit hookless snap rings in piston The available special tools are listed in the repair instructions for the STIHL BR 500, 550, 600. 4.2.1 Stop screw 4.2.2 Assembly tool When servicing, always use stop screw 4282 890 2700. Stop screw 4180 890 2700 can cause damage to the piston and crankgear with the 4282. In the future, stop screw 4180 890 2700 will be replaced by stop screw 4282 890 2700. Stop screw 4282 890 2700 can also be used for the 4180. Use assembly tool 5910 890 2212 for inserting the snap ring between the piston and piston pin. The assembly tool must be combined with the new sleeve 5910 893 1704 for the 4282. TI_08_2005_11_01_02.fm