Yamaha 55DEHD Service Manual

Also see for 55DEHD: Rigging guide Rigging guide

6885J11 5-30987654321CrankcaseAssembling the crankshaft1. Install a new ball bearing 1 into thecrankshaft using a press, then install thecirclip.cCDo not reuse the ball bearing, alwaysreplace it with a new one.2. Install the main bearings 4 and circlips5 onto the crankshaft journal.31268850510Support 2:90890-02394Bearing pressure C 3:90890-02393454568850520Assembling the piston and connect-ing rod assembly1. Assemble the pistons 1, connecting rods2, needle bearings 3, washers 4, pis-ton pins 5, and new piston pin clips 6.NOTE:9 Face the embossed “YAMAHA” mark a onthe connecting rod in the same direction asthe “UP” mark b on the piston.9 Install the set with the identification mark inthe direction indicated in the removal proce-dure.9 Use the special service tool 7 to install theneedle bearings.9 Always use new piston pin clips.9 Be sure to align the piston pin clip end withthe piston pin slot c.2. Install the 2nd piston ring 8 and top pis-ton ring 9 onto the pistons.9868850540123467abc456668850530Small end bearing installer 7:90890-06527