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G- Drive Face Fan Overlay 90mm (139QMB)

G- Drive Face Fan Overlay 90mm (139QMB)
G- Drive Face Fan Overlay 90mm (139QMB)
G- Drive Face Fan Overlay 90mm (139QMB)
G- Drive Face Fan Overlay 90mm (139QMB)

Description: Drive Face Fan Overlay 90mm for 139QMB 49cc-50cc scooter engines.

Installation: Make sure variator drive face is seated properly and not get its teeth chewed by the Bendix1. 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 Loctitetorque nut to 30-35ft-lbs. For reassurance please consult your manufacturer's variator torque specs.


Include the following Drive face overlay.

•    1x Drive Face Overlay ID: 39.5mm / OD: 90mm (3 1/2") / H: 13mm
    Fit Starter: Bendix / Lock: Bracket
•    Fit Variator Housing88mm or 89mm Weights: 16x13mm / Slides: 3 Top: 73.5mm Boss: 20mm / Shims: 20mm / Drive Spline26
    Fit Variator Ratchet: Gear / Shaft Nut: M12 / Washer: M12 / Socket: 17mm
•    Fit Belt Size: 669, 729, 788-18-30
•    Fit Crankshaft 41.4mm to 44mm
•    Fit Dowel Pin Set (8x10mm)
•    Fit QMB 49/50cc+

Supported Models: Naraku CVT Kit (Part# KIT.A.139QMB); 139QMB 49cc-50cc engines, Baja SC50, Boreem (BMS) 50, Filly 50, Kymco 50, Panterra 50, Qingqi 50, QLink 50, Roketa 50, SUNL 50, SYM 50, Tank 50, TaoTao 50, and virtually any other scooter engine with these measurements.

Item Weight & Product Dimensions:
•    0.025 pounds | 3.543” (OD) x 1.555” (ID) x 0.511” (H)

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G- Drive Face Fan Overlay 90mm (139QMB)
  • Stock: 22
  • Part #: 151-39
Sold: 20
Views: 10087
Price in reward points: 5