Sunday, 6 July 2014

Yamaha YBR 125 blog valve clearance adjustment tappets











Yamaha YBR 125 workshop manual

Buy now 






Just done a tappets adjustment on and engine i have removed , ill be fitting the engine soon so ill take some photos of this as i go along .

this ids a very easy job with engine out or in .

make sure you change the o-rings you might get away with it but more often than not no and oil will leak
especially around the cam sprocket cover and drip onto exhaust causing excess smoke .






Yamaha YBR 125 blog valve clearance tappet
                                                            remove inspection covers ( 24mm)
Yamaha YBR 125 blog valve clearance

Yamaha YBR 125 blog valve clearance

Yamaha YBR 125 blog valve clearance

Yamaha YBR 125 blog valve clearance

Yamaha YBR 125 blog valve clearance

change all O-rings 

Yamaha YBR 125 blog valve clearance
                                                                   remove plastic inspection covers
                                                                   use a good fitting tool to avoid damage to
                                                                   them .
Yamaha YBR 125 blog valve clearance
                                                remove camshaft sprocket cover
Yamaha YBR 125 blog valve clearance
                                                          change this O-ring otherwise this leaks
                                                          directly onto exhaust
Yamaha YBR 125 blog valve clearance

Yamaha YBR 125 blog valve clearance


Yamaha YBR 125 blog valve clearance

Yamaha YBR 125 blog valve clearance

Yamaha YBR 125 blog valve clearance
                                       turn engine over anti clockwise with crank nut ( 17mm)
Yamaha YBR 125 blog valve clearance
                                                make sure piston is at top dead centre and marks are aligned on the
                                                srpocket ( white marks ) ive painted them white but manufacturer markings
                                                are easy to see
Yamaha YBR 125 blog valve clearance 

make sure lower marks are aligned buy viwing in inspection window

Yamaha YBR 125 blog valve clearance

then make sure you have free play in both rocker arm 
to ensure you are a TDC on compression stroke (valves closed )

Yamaha YBR 125 blog valve clearance

Yamaha YBR 125 blog valve clearance
                                                      check clearance gap is with above specs
Yamaha YBR 125 blog valve clearance
                                                               adjust where neccessary
Yamaha YBR 125 blog valve clearance

Yamaha YBR 125 blog valve clearance

Yamaha YBR 125 blog valve clearance

easy now just check every thing is tightened to specs and turn engine over a couple of times 
make sure things go smooth and fit inspection covers changing orings .


                                         

see more Yamaha YBR 125 blog posts 

thanks for reading the Yamaha Owners blog , if you would like to support us you can by  buying your newYamaha YBR 125 off ebay uk here or buying  parts for your yamaha YBR 125 from ebay uk 


No comments:

Post a comment