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CPI JR 50 User Manual

CPI JR 50
46 pages
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CPI JR 50 Specifications

General IconGeneral
Fuel SystemCarburetor
TransmissionAutomatic
Front SuspensionTelescopic fork
Rear BrakeDrum
Width700 mm
Displacement49.5 cc
Bore x Stroke40.0 mm x 39.2 mm
Starting SystemKick

Summary

Engine Removal and Installation

Engine Removal Procedures

Steps to remove engine components, disconnect systems, and detach the engine.

Engine Installation Adjustments

Adjusting throttle cable, oil pump cable, and rear brake free play.

Lubrication and Fuel Systems Service

Oil Pump Service

Procedures for oil pump removal, inspection, installation, and air release.

Fuel System Components Service

Servicing throttle valve, carburetor, and reed valve.

Cylinder, Piston, and Crankshaft Service

Cylinder and Piston Service

Removing and inspecting cylinder head, cylinder, piston, and rings.

Crankshaft and Connecting Rod Inspection

Measuring crankshaft and connecting rod clearances and runout.

Transmission System Service

Crankcase Cover and Drive System Service

Removing crankcase cover, inspecting drive belt, rollers, clutch, and pulleys.

Final Drive Gear Service

Procedures for removing and inspecting the final transmission gear.

Crankcase and Crankshaft Assembly

Crankcase Removal and Installation

Steps for removing and installing the crankcase and crankshaft.

Crankshaft Inspection

Measuring crankshaft clearances, runout, and bearing play.

Electrical System Service

Battery, Ignition, and Starting System Service

Testing battery, charging, ignition coils, CDI, and starter motor.

Fuel Gauge, Switches, and Lighting Service

Inspecting fuel gauge, indicators, and various control switches.

Chassis, Wheels, and Brakes Service

Rear Wheel and Brake Service

Removing, checking, and servicing the rear wheel and brake system.

Front Wheel and Brake Service

Removing, checking, and servicing the front wheel and disc brake system.

Front Fork and Steering System Service

Front Fork Service Procedures

Removing, disassembling, inspecting, and assembling the front fork.

Steering Stem Service

Removing, installing, and adjusting the steering stem.

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