Chinese Taiwanese & Korean Scooters 50cc Thru 200cc, '04-'09: 50, 100, 125, 150 & 200 Cc Twist and Go (Haynes Service & Repair Manual). Buy GY6(150cc) Carburetor for 150cc 125cc 152QMJ 157QMJ 4 Stroke Engines Electric Choke Motorcycle Scooter - GY6 150cc Carburetor 24mm PD24J Carb: Carburetors - Amazon.com FREE DELIVERY possible on eligible purchases. GY6 125cc 150cc (152QMI 157QMJ) Performance Parts The 152QMI (GY6-125) & 157QMJ (GY6-150) (QMI152 QMJ157) is a horizontal, single-cylinder, four stroke, forced air cooled engine. This has a displacement of 149.6cc (157QMJ) has a bore size of 57.4mm and a stroke of 57.8mm. This type-A Honda clone engine has a automatic CTV transmission. If this measurement is too great, it will cause the engine to shake abnormally, shortening the life of the engine It must be examined carefully when inspecting. Service Limit 0.10mm(A=90) 0.10mm(B=105). Examine if there is any loose, or unusual sound when the crank journal bearing turns. If there is, the whole set should be changed.
Anyone know where I can get a Service Manual for a 150cc 157QMJ??? Thanks, Curbie.
Ok, what's the difference here.150cc Gy6 Parts Manual
![Gy6 150cc engine specs Gy6 150cc engine specs](/uploads/1/1/7/8/117815168/245517367.jpg)
![150cc gy6 parts manual 150cc gy6 parts manual](https://ae01.alicdn.com/kf/HTB1ZmVEQXXXXXX4XVXXq6xXFXXXV/Yx-150cc-manual-do-motor-de-partida-el-trico-pit-pro-trail-sujeira-postie-bicicleta-thump.jpg)
In fact, I bought a performance coil and CDI from a seller stating that their parts would not work on 1P57QMJ motor - after I got them I promptly put them on my 1P57QMJ GY6 and drove away happy. Duh.
But when it comes to real hard parts like cylinder heads and piston jugs, is there a difference? I even asked one of the sellers about the difference, I basically got the answer: 'Because they're not the same.' Accurate? Perhaps, but I have my doubts.
Don't talk about 2 bolt vs 4 bolt heads, I know about that and that's not it. Could it be short case vs long case? If that was it, wouldn't that be on the transmission side and not the piston side?
1p57qmj Manual
We have 2 buggies, both 150cc GY6's. One is a 1P57, the other is a 157. They look the same. Four bolt heads, and everything external basically looks the same.157qmj Parts
Any other informed ideas?