Gates CVT Belt 669-18-30 PL30507 Premium (139QMB shortcase)
1P39QMB shortcase / Tire Size 3.50-10" Rim
Description: Gates Powerlink Premium CVT Drive Belt size 669x18x30 are made in China by the U.S.A. Company Standard. Its material used is EPDM (Ethylene Propylene Diene Monomer) used in making automotive and construction for its excellent resistance to environmental factors such as weather and heat resistant up to 130°C (266°F). EPDM strong yet it is flexible, not harsh on aluminum drive face like "Kevlar" which are recommended for heavier duty off-road applications. EPDM makes it gentle on CVT recommended for everyday riding use. CVT Drive Belt size 669-18-30 commonly found on 139QMB 50cc 4-stroke ATVs and Street Scooters with a 10-inch rear wheel short case engine. Also fits Twist N' Go Venice 49cc, Twist N' Go LS 49cc, and Twist N' Go Milano 50 (49cc) '04-'07.
Installation: Make sure variator drive face is seated properly and not get its teeth chewed by the Bendix: 1. Slack the belt by opening the CVT clutch gives belt slack to the variator side. 2. Then install the variator drive face while lifting the slack belt further away from the center boss if done properly should not see any splines between variator drive face slop-side and boss flat-side. Should be flushed together. 3. Then install the existing variator fan, washer, and hand-tight nut. 4. Finally, apply blue Loctite, torque nut to 30-35ft lbs. For reassurance please consult your manufacturer variator torque specs.
NOTE: How tell if you have 139QMB longcase or shortcase? If the distance from variator nut to clutch bell nut is 8.75", then it takes a 669-CVT belt which makes it a shortcase. If the distance from variator nut to clutch bell nut is 10", then it takes a 729-CVT belt which makes it a longcase. For we can’t always tell by rim size alone, for example, if the 139QMB Scooter has a 10" rim it can be tire size 3.50-10 (use 669-CVT belt shortcase) or have a tire size 130/90-10 (use 729-CVT belt longcase).
Include the following one belt.
• Poly Reinforcement Cords / EPDM Construction
• Length: 669mm (Loop 14.026 in.)
• Width: 18mm (0.708 in.)
• Height: 9mm (0.354 in.)
• Groove Angle: 30°
• U.S.A. Company / manufactured in CHINA
• Fit 10" Rear Wheel Shortcase Engine
• Fit QMB 49/50cc+
Supported Models: Naraku CVT Kit (Part# KIT.A.139QMB); GY6 139QMB 49cc-50cc engines, Baja SC50, Bintelli Breeze 50cc, Bintelli Beast 50cc, Bintelli Bolt 50cc, Bintelli Scorch, Bintelli Sprint 50cc, Buddy50, Filly 50, Kymco, Panterra Freedom 50cc, Panterra Fusion 50cc, Panterra Retro 50cc, QLink, Roketa, RoughHouse, Schwinn Hope 50, Schwinn Laguna 50, SYM, TaoTao, Twist N' Go LS 49cc, Twist N' Go Milano 50 (49cc) '04-'07, Twist N' Go Venice 49cc, Wolf Blaze, Wolf CF-50, Wolf Islander, Wolf Lucky, Wolf M1, Wolf R1, Wolf RX-50, Wolf V50, Wolf W1, and virtually any other scooter engine with these measurements.
Item Weight & Product Dimensions:
• 0.20 pounds | 14.026” (L) x 0.708” (W) x 0.354” (H)