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PAGE 4 — MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #6 (10/27/11)
MQ-D2H/D3H Gasoline
Powered Diaphragm
Pumps
Proposition 65 Warning ............................................. 2
Table of Contents ...................................................... 4
Parts Ordering Procedures ....................................... 5
Safety Information .................................................. 6-9
Specifications ...........................................................10
Dimensions ..............................................................11
General Information .................................................12
Components.............................................................13
Basic Engine ............................................................ 14
Inspection .................................................................15
Set-up ................................................................ 16-17
Operation ........................................................... 18-19
Maintenance ...................................................... 20-25
Preparation for Long-Term Storage .........................26
Troubleshooting ................................................. 27-29
Explanation Of Code In Remarks Column ...............30
Suggested Spare Parts ............................................31
HONDA GX120K1QX2 Engine
Air Cleaner Assembly......................................... 46-47
Camshaft Assembly ........................................... 48-49
Carburetor Assembly ......................................... 50-51
Control Assembly ............................................... 52-53
Crankcase Cover Assembly ............................... 54-55
Crankshaft Assembly ......................................... 56-57
Cylinder Barrel Assembly ................................... 58-59
Cylinder Head Assembly .................................... 60-61
Fan Cover Assembly .......................................... 62-63
Flywheel Assembly ............................................ 64-65
Fuel Tank Assembly ........................................... 66-67
Ignition Coil Assembly ........................................ 68-69
Muffler Assembly ............................................... 70-71
Piston Assembly ................................................. 72-73
Recoil Starter Assembly..................................... 74-75
Gasket Kit Assembly .......................................... 76-77
Labels ................................................................ 78-79
Terms and Condition Of Sale
— Parts .................... 80
Component Drawings
Nameplate and Decals Assy. ............................. 32-33
Waterbox and Flap Valve Assy. (2-inch) ............. 34-35
Pump Assy. (2-inch) ........................................... 36-37
Handle, Engine and Wheel Assy. (2-inch) .......... 38-39
Waterbox and Flat Valve Assy. (3-inch).............. 40-41
Pump Assy. (3-inch) ........................................... 42-43
Handle, Engine and Wheel Assy. (3-inch) .......... 44-45
TABLE OF CONTENTS
Specification and part number are subject to
change without notice.
NOTICE