150cc problems and 125 Pitbike ID

[Becky]

Hey
I have recently purchased a couple pit bikes
One is a TTY 150 running a bit rough unless flat out any ideas
What may need fixing ?? Also a 125 the plate with VIN and stuff says
Model: WYAY .. This one needs a bit of love so chasing plastics and a seat and possibly handle bars
Can any one point me in the right direction
Thanks

 

[my67xr]

hi, Welcome to Miniriders,

the 150 could need the valve clearances done, that will give the engine a good base to start tuning it.
have you pulled down the carby yet, removed the jets etc and given it a decent clean out ?

here is a good video to help so you how to set the clearances
except i would adjust them to .003" (.8mm) on the inlet, and .004" (.1mm) on the exhaust

[video=youtube;QJciyJRJh8Q]http://www.youtube.com/watch?v=QJciyJRJh8Q[/video]




the 125 pitbike, you will need to upload some pictures so we can help work out what it is

this thread helps explain how to upload pics
http://www.miniriders.com/general-c...ers-old-new-few-helpful-tips-hints-ideas.html


and make sure you drop in and say hello in out Introduce Yourself thread too while you are here.



cheers, craig

 

[Becky]

Thanks a lot Craig will be going over everything on the weekend I am not mechanically minded but
I am hoping to become so!
One more thing the TTY has a pretty powerful kick back when trying to start any tips on how to fix this ??

 

[Phil67]

Retard the timing is the easiest. cut the pick up on the flywheel in half.

 

[Becky]

Hey would i be able to find this somewhere on YouTube
Pretty much a newbie

 

[my67xr]

is the engine a Lifan 150 1P56FMJ ?
there will be a model number stamped into the case below the sprocket cover.


if so, and it has the Adjustable Timing Outer Rotor Kit, then you can retard the timing a bit.
if you take the 3x 8mm headed bolts out that hold the L/H ignition cover to the engine case, you will see the flywheel
does it look like this one ?

 

[gottagetacheaperhobby]

Thanks a lot Craig will be going over everything on the weekend I am not mechanically minded but
I am hoping to become so!
One more thing the TTY has a pretty powerful kick back when trying to start any tips on how to fix this ??

are you kicking it over just past tdc? that will help reduce kickback to

 

[Phil67]

Becky are you in Victoria?