Service Manual [verified] - Kymco Kb 50

Stuff a clean, lint-free rag into the crankcase opening to prevent loose parts from falling inside.

Use a variator locking tool (or an impact wrench) to remove the crankshaft nut holding the outer drive face. kymco kb 50 service manual

Inspect the CVT drive belt and roller weights for flat spots. Check and top off the final drive gear oil. Every 6,000 km (3,600 miles) Replace the CVT drive belt. Change the final drive gear oil entirely. Decarbonize the exhaust port and muffler. Inspect steering head bearings for play. 3. Fuel System & Carburetor Tuning Stuff a clean, lint-free rag into the crankcase

Other essential features commonly found in this manual include: Check and top off the final drive gear oil

The Continuously Variable Transmission translates engine RPM into smooth, gearless acceleration. Wear in this department directly impacts your top speed and hill-climbing power. Servicing the Variator Remove the left-side crankcase plastic and aluminum covers.

The Kymco KB 50 utilizes a vacuum-operated fuel petcock and a float-bowl carburetor equipped with an electronic auto-choke (bystarter). If your scooter struggles to start cold or bogs down at full throttle, the fuel system is the first place to look. Carburetor Specifications 1,900 RPM ± 100 RPM