Mazda 121 B3 1.3L Engine & Transaxle Repair Manual | PDF Download

This Mazda 121 - B3 1323cc Engine and Transaxle Repair Manual provides illustrated instructions for engine dismantling, inspection, repair and reassembly, together with manual gearbox overhaul procedures. It also covers electronic fuel injection, ignition, cooling, lubrication and fault diagnosis, with technical specifications and component adjustments.

Models Covered

• Mazda 121 – B3 1323cc (1.3L) 16-valve petrol engine

• Electronic gasoline injection (EGI-S)

• Manual transaxle models

What's Included in This Manual

Engine Repairs and Overhaul

• Engine removal and installation

• Cylinder head removal, dismantling and reassembly

• Camshaft, valves, valve springs and valve clearances

• Timing belt removal, installation and adjustment

• Pistons, piston rings and connecting rods

• Crankshaft, bearings and cylinder block

• Engine inspection, measurements and wear limits

• Gaskets, oil seals and engine reassembly

Fuel Injection and Engine Management

• EGI-S electronic fuel-injection system

• Injection body, injector and throttle components

• Fuel pump, fuel filter and pressure regulator

• Fuel-pressure testing and fault diagnosis

• Engine control unit (ECU) and related sensors

• Airflow sensor, throttle sensor and oxygen sensor

• Idle-speed control and air-bypass solenoid valves

• Electronic fuel-injection troubleshooting

Ignition and Engine Electrical Systems

• Ignition timing and adjustments

• Distributor and ignition components

• Spark plugs and ignition system checks

• Starter motor and charging system

• Electrical component inspection and testing

Cooling and Lubrication Systems

• Radiator, thermostat and water pump

• Cooling-system inspection and servicing

• Engine oil pump and lubrication components

• Oil-pressure inspection and testing

• Oil filter and engine lubrication procedures

Clutch and Manual Transaxle

• Clutch removal, inspection and installation

• Clutch operating components and adjustments

• Manual transaxle removal and installation

• Gearbox dismantling and reassembly

• Gears, shafts, bearings and synchronisers

• Gear-selection mechanism and shift components

• Differential and associated transmission components

• Inspection measurements and repair specifications

Engine Fault Diagnosis

• Difficult starting and failure to start

• Rough idling and poor engine performance

• Fuel-injection and ignition faults

• Engine overheating

• Low compression and excessive oil consumption

• Sensor and electrical-system testing

Technical Specifications

• Engine dimensions and clearances

• Inspection limits and service tolerances

• Tightening torques

• Lubricant specifications and capacities

• Engine timing and adjustment settings

• Illustrated component assemblies and repair procedures

Manual Format: PDF digital download.

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Language: English 

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