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Baotian 139QMB User Manual

Baotian 139QMB
41 pages
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Baotian 139QMB Specifications

General IconGeneral
BrandBaotian
Model139QMB
CategoryEngine
LanguageEnglish

Summary

CHAPTER ONE GENERAL INFORMATION

ENGINE NUMBER LOCATION

Location of the engine number on the left crankcase.

BASIC TECHNICAL SPECIFICATIONS

Key technical specifications of the engine, including type, displacement, power, and torque.

III TIGHTENING TORQUE VALUE

STANDARD TORQUE VALUE

Standard torque values for various bolts and nuts used in engine assembly.

Torque Values of Important Parts of Engine

Specific torque values for critical engine components and fasteners.

V. TOOLS

List and identification of special tools required for maintenance.

TROUBLE FINDING

1. Difficult Starting or Refusal to Starting

Diagnostic flowchart and causes for engine starting issues.

1. Difficult Rotation (Poor Acceleration or Feeble Rotation)

Troubleshooting guide for poor engine acceleration or weak performance.

Difficult Rotation (High Speed)

Diagnostic steps for issues related to high-speed engine operation.

MAINTENANCE INTERVALS

Engine maintenance intervals

Schedule for routine maintenance tasks based on mileage.

II. ENGINE DISASSEMBLING, ASSEMBLING, INSPECTING AND ADJUSTING

III. Cylinder Head and Valve

Detailed procedure for disassembling and inspecting the cylinder head and valves.

IV. Disassembling And Inspecting Cylinder Block and Piston

Procedure for disassembling and inspecting the cylinder block and piston.

Kickstarter Disassembling and Inspecting

Steps for disassembling and inspecting the kickstarter mechanism.

VI. Disassembling and Inspecting Stepless Transmission System

Inspect if there is any wear of V-belt

Checking the V-belt for wear and measuring its width.

VII. Electric Starter

2. Precautions

Important safety and handling precautions for the starting system.

3. Troubles Finding

Common starting system problems and their potential causes.

VIII MAGNETO AND ELECTRIC PARTS

2. Magneto and electric parts disassembling and assembling

General procedure for disassembling and assembling magneto and electric parts.

3. Ignition system

Explanation of the ignition system's operation and circuit.

3.4 Ignition system trouble finding

Common ignition system faults and troubleshooting steps.

IX Crankcase and Crankshaft

2. Crankcase and crankshaft disassembling and inspecting:

Procedure for disassembling and inspecting the crankcase and crankshaft.

X. Timing Chain and Tensioner

2. Timing chain and tensioner disassembling and inspecting

Detailed steps for disassembling and inspecting the timing chain and tensioner.

XI. Lubrication System

3. Precautions

Safety and operational precautions for the lubrication system.

4. Trouble finding

Common problems and troubleshooting for the lubrication system.

5.2 Engine oil changing

Steps for draining, cleaning, and refilling engine oil.

XII. Rear Transmission

2. Rear transmission disassembling and inspecting:

Procedure for disassembling and inspecting the rear transmission.

XIII. Carburetor

1. Precautions in carburetor maintenance and adjustment

Safety and operational precautions for carburetor maintenance.

3. Carburetor disassembling, cleaning and inspecting,

Procedure for disassembling, cleaning, and inspecting the carburetor.

4. Carburetoridle speed adjustment:

Procedures for adjusting the carburetor's idle speed.

XIV. Air Filter

ATTACHED PAGES SPECIAL TOOLS

Universal tools

Listing and identification of various universal tools.

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