Chinese scooters are undoubtedly certainly one of the hottest types of low cost transportation that has hit the U.S market. One factor that’s going to occur in some unspecified time in the future along with your 139QMB 50cc Chinese scooter will probably be belt failure. Scooter belt failure virtually occurs with out warning however with these easy steps I’ll present you tips on how to change the belt on you Chinese 50cc 139qmb scooter.
139QMB Chinese Scooter Change the Belt Instructions
First you will want to take off the CVT cowl from the engine. This cowl is held in by a number of bolts as seen in the image
When you’ve gotten pulled the case cowl off, There’ll greater than possible be a shredded belt in addition to black particles and mud that should be cleaned out totally earlier than a brand new belt will be put in. Double test each the variator pulley and rear clutch pulley are free from the worn belt.
The following step is to take away the exterior half of the variator pulley (fan pulley on the crankshaft) by means of a 17 mm nut. That is the most troublesome a part of the course of since you should hold the engine from rotating to get the nut off. One in all the methods of doing that is to wedge a large enough screw driver or block of wooden between the engine case and the pulley to maintain it from slipping. If you don’t really feel comfy doing this methodology, there are specialty instruments obtainable to do that with out worry of damaging your scooter. Take a look at the hyperlink at then backside of this text.
After the nut has been eliminated, pull off the variator assembly, being cautious to notice the reinstall arraignment. Examine the rollers inside, If they’ve massive flat spots and or are damaged, exchange these as nicely. After you may have inspected these components, reinstall the variator much less the fan pulley half. Now that you must test the rear clutch pulley for clean operation. Take each of your palms and grasp the pulley as seen in the image. Be sure that pulley can transfer freely when compressing together with your fingers.
Compress the rear pulley aside once more ,putting in the belt on this pulley first. Permit your self sufficient slack to loop the scooter belt again on to the crankshaft the place the different half of the variator fan pulley half will probably be reinstalled after. When you’ve got reinstalled the pulley half on the crankshaft, double verify that the 17mm retaining nut is on tight to make sure the variator is not going to come unfastened whereas driving your scooter.
When shopping for a brand new belt in your 50cc 139QMB primarily based Chinese Scooter, Understand that your driving habits have an effect on the lifetime of the belt. Usually belts can final from 2000 to 8000 miles with regular utilization. Kevlar belts can be found as a heavy responsibility choice for those who have modified scooters and or for individuals who are usually rougher with their driving model.
[source ehow.com]
