Tuesday, 5 January 2016

Yamaha YBR 125 cylinder head / spark plug thread repair


Need to repair my threads for spark plug on this engine but thought it might be useful for YBR owners too  . i use these V-coil versions

Yamaha YBR 125 cylinder head / spark plug thread repair


Buy these here 



Quite an easy job just be clean and use great to catch the metal filings and take you time make sure you have all tools at the ready and nice clean environment and repairing your Yamaha YBR  125 spark plug threads should be easy 



Heli coil set 

Yamaha YBR 125 cylinder head / spark plug thread repair

Yamaha YBR 125 cylinder head / spark plug thread repair

drill out old threads 

Yamaha YBR 125 cylinder head / spark plug thread repair

Yamaha YBR 125 cylinder head / spark plug thread repair

I grease a bolts and fish out all the drilling bits and burrs 

Yamaha YBR 125 cylinder head / spark plug thread repair

Yamaha YBR 125 cylinder head / spark plug thread repair

Now tap out the whole 

Yamaha YBR 125 cylinder head / spark plug thread repair

again grease end to catch any cuttings 

Yamaha YBR 125 cylinder head / spark plug thread repair

Yamaha YBR 125 cylinder head / spark plug thread repair

i then blow out hole 

Yamaha YBR 125 cylinder head / spark plug thread repair

Yamaha YBR 125 cylinder head / spark plug thread repair

now fit the thread 

Yamaha YBR 125 cylinder head / spark plug thread repair

Yamaha YBR 125 cylinder head / spark plug thread repair

Yamaha YBR 125 cylinder head / spark plug thread repair

Yamaha YBR 125 cylinder head / spark plug thread repair

and break off the fitting tab 

Yamaha YBR 125 cylinder head / spark plug thread repair


fit spark plug tighten and test 

Yamaha YBR 125 cylinder head / spark plug thread repair

Yamaha YBR 125 cylinder head / spark plug thread repair

No comments:

Post a comment