14.95 USD

Walbro diaphragm carburetor service manual.

Contents
Introduction 2
Air and fuel 3
Alternative fuels 4
Two cycle engines 5,6
The fuel metering system 6,7
Butterfly carburettors 7,8
Venturi operation 8
Troubleshooting 9-12
Determining cause 9,10
Pressure testing 11
Hard starting hot 11
No idle 11
Poor idle 12
Poor acceleration 12
Poor high speed 12
Carburetor disassembly 12,13
Carburetor rebuild 13,14
Mixture screws 13
fuel pump 14
Welsh plug removal 14
Circuit plate removal 14
Main nozzle check 15-17
Reassembly 18
Pressure testing 19
Adjustments 20
Barrel valve carburettors 21
WY series 22
WZ series 23
Barrel valve carburetor adjustments 24
Air purge systems 25
Primer systems 26,27
Accelerator systems 28,29
Governor 30
Tools 31

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File Size: 5.7 MBytes