Problem with Valves 170FMN 300cc chinese By wanderingbiker (Read 926 times)

[wanderingbiker]

Im starting to seriously wonder  why on earth i bought  a Chinese engine now. Serious lack of customer support from the  supplier and 0 response from the manufacturer. 

I posted on here a while back about  not being able to fix my electrics well after a few months and a lot of help from people here i finally got  them to work. The only downside now, when i kick she doesn't start. every now and then she will fire but  die and when she fires smoke comes  out of the carb (defo smoke you can smell it too). 

I know i have to sort the timing out, but all the manuals i find are for cam chain, but this engine is a push rod. Does any guru here know what feeler gauge  to use to set the valves. what mm etc for both intake and exhaust. 

I just bought the engine not a bike and I can't find  another bike with this  engine inside. 

ENGINE: 

170FMN 
yinxiang 
300cc  
same as NT250 
Push rod timing  no chain 

Thanks for  any help its greatly appriciated. 

[wanderingbiker]

Sorry for got to mention that the engine is a copy from the Air Cooled Honda CG125 Engines spanning 1976-1991. This is the push rod engine that was used when creating the Chinese CG-200 and CG-250. Could i just grab the manual from carlsalter anduse the specs there

[cyborg]

i'd use the honda manual for the motor this one is cloned after,,,i would think .004 for intake ,,, .005 for exhaust would do it but reference the honda manual

[wanderingbiker]

The manual says both intake and exhaust 0.08. although the original is a 125 whereas this is a 300 so i would imagine its different ill try yours and try the manual. Would be so much easier if they just answered your questions when you email. hhhhmmm my gf is chinese malaysian so if neither of those work im goingto get her to call direct hahaha

[jct842]

Check on a chinese motorcycle forum, they will be more in tuned to what you have and will have links for manuals. With the exception to the latest engines they are using the push rod engines.