Friday, 11 July 2014

Yamaha YBR 125 Top End Removal ( Cylinder barrel , piston and head )







Yamaha YBR 125 Top End




Yamaha YBR 125 workshop manual

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Yamaha YBR 125 Top End Removal ( Cylinder barrel , piston and head )

ill ad captions later , but heres a post on removing the top end , cylinder head and piston from the yamaha ybr 125 , quite easy even in the bike .



Yamaha YBR 125 Top End

Yamaha YBR 125 Top End

                                             Side timing chain cover removed  
Yamaha YBR 125 Top End
                                          all main top end bolts loosened and  removed
Yamaha YBR 125 Top End

Yamaha YBR 125 Top End

Yamaha YBR 125 Top End

Yamaha YBR 125 Top End

Yamaha YBR 125 Top End



Yamaha YBR 125 Top End
undoing the top cam bolt whilst holding the crank nut tight
slack off and remove the chain tensioning assembly
Yamaha YBR 125 Top End

Yamaha YBR 125 Top End

Yamaha YBR 125 Top End

Yamaha YBR 125 Top End

Yamaha YBR 125 Top End
                                    remove the timing gear but catch the chain
Yamaha YBR 125 Top End

Yamaha YBR 125 Top End
                                i tie the chain so it not just falling into the lower section
Yamaha YBR 125 Top End

Yamaha YBR 125 Top End
                                                          cylinder head  removed
Yamaha YBR 125 Top End

Yamaha YBR 125 Top End

Yamaha YBR 125 Top End

Yamaha YBR 125 Top End
                       you may need to tap the cylinder in a few places to dislodge it
                                                      use a soft mallet .
Yamaha YBR 125 Top End

Yamaha YBR 125 Top End

Yamaha YBR 125 Top End
                                     remove circlip knock out piston pin and remove piston
                                       job done and very easy to do
Yamaha YBR 125 Top End


Yamaha YBR 125 Top End

Yamaha YBR 125 Top End

Yamaha YBR 125 Top End


Check for damage and replace any suspect parts with new parts 










see more Yamaha YBR 125 blog posts 
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