timing on ducar 80cc engine.

[SoCalMongol]

i have a mini choper that jumped timing and i dont have a service manual for it. if you know the timing marks for itplease please please!!!! help thanx for lookin at my thread

 

[pitmaster]

Video Tech Tip Archive   How to

click the ADJUST VALVES video, and take note when he talks about lining the timing marks up, that should show you where the marks should be,

the 80cc ducar should be similar in pictures,

see if that helps you,

 

[SoCalMongol]

swet ill try that man. thanx alot

 

[SoCalMongol]

still cant find em. anyone have any suggeestions?

 

[SoCalMongol]

any one?....

 

[pitmaster]

so what exactly has happened? give a few more details, and ill try to tell you what to do....

 

[SoCalMongol]

well i was riding and the bike kinda just died. and i thoiugh at first the engine was blown but its not. my timing belt jumped. i got the engine to turn but its still not starting because its way off timing.

 

[SoCalMongol]

i wasnt able to open that vid you sent me to so maby that couold hae the answer in it. but i just coudnt get it to open.

 

[sean01]

to check your timing mate, the most simplest way i have found is remove the spark plug, cam gear cover on the head and the magneto cover. now looking at the hole where the cam gear cover cam off there should be a notch or small arrow on the head and also a dot or mark on the cam gear, if you line these both up then you have top dead center on the cam..
now take a small screw driver and gently put it in the spark plug hole untill you feel it hit the piston now slowly and gently turn the magneto till you find the piston is all the way up to the top(please be carefull not to jam the screw driver in there).
now when you have found the pitson to be at the very top of its travel have a look at the cam gear marks and see if they line up together....

and mate how much oil do you have in yr bike because if you let it run too low i believe that this can cause the timing chain adjuster to not hold its tension as it runs off oil pressure..

also some details may be a little different as i have a 125cc
also sorry if its too much info but its better to have too much than not enough

 

[SoCalMongol]

thanx alot dewd. that was very helpful i appreciate it