Platina 125/ XCD 125 spark timing setting
Channel: FixitYaon
Date: 13/12/2019

Pls like my video if helpful to you!

Here I'm explaining you how to identify the timing marks correctly. In default in my own  overhauling the engine rotated & timing marks went wrong, moved to retard position.

By retarding one cannot achieve bikes max speed, hard starting in cold condition, engine miss when acceleration & high fuel consumption.

SOME CORRECTIONS TO MY VEDIO:
If you have set the correct valve lash (In- 0.05mm/ ex-0.10mm) @ compression TDC but with incorrect injection timing. Here is how to correct it in hardway. (If want to learn) Remove oil, just remove the magnito cover (I recommend this than removing clutch cover) Turn the engine to normal direction of rotation.i.e. towards anti-clockwise seen from magnito cover end unti you see the flywheel TDC mark coincide with magnito housing notch. Get the cam sprocket position "T" come to top by steadily holding timing chain. You have to Remove 6mm allan bolt retaining it to do it. N.b.make sure the bolt & washer doesn't fall in & in case keep the magnetic tool nearby.

EASY WAY: Position the engine to compression TDC (Piston/ flywheel TDC) Get the cam sprocket position "T" come to top by steadily holding timing chain. You have to Remove 6mm allan bolt retaining it to do it. N.b.make sure the bolt & washer doesn't fall in & in case keep the magnetic tool nearby.

Then match the gear with the timing chain evenly & force the assembly on the cam shaft key by lever with a screwdriver upward. 

N.b Do not assemble the cam gear on camshaft keyway & forcefully jump the timing chain with engine rotation. Just lever the cam gear with a screw driver.

N.b if you are not sure on the TDC of engine (Valve timing) then you can double check it by putting a small rod/ screwdriver through spark plug hole. Or inspect piston upward & downward movement.

N.b two magnito revolution= one cam sprocket revolution. (Complete 04- stroke cycle)

N.b. if you are not sure on the ignition timing with reference to valve timing then you can remove the spark plug check the fire position


If you have any doubts/ comments or suggestions do contact me on my e-mail keerthikatanvila@gmail.com. Chat also available...