Troubleshooting Engine, Engine Troubleshooting | Multiquip QP4TH

TROUBLESHOOTING (ENGINE)

Table 7. Engine Troubleshooting

	Symptom	Possible Problem	Solution
	Difficult to start

		Ignition plug being bridge?	Check ignition system.
	Fuel is available but spark plug will not	Carbon deposit at ignition?	Clean or replace ignition.
	ignite. (Power available at high tension	Short circuit due to defective insulators?	Replace insulators.
	cable).
	cable).	Improper spark gap?	Set spark plug gap to the
			Set spark plug gap to the
			correct gap.
			correct gap.
	Fuel is available but spark plug will not	Short circuit at stop switch?	Check stop switch circuit.
	ignite. (Power NOT available at high	Short circuit at stop switch?	Replace stop switch if defective.
	ignite. (Power NOT available at high		Replace stop switch if defective.
	tension cable).	Ignition coil defective?	Replace ignition coil.
		Muffler clogged with carbon deposits?	Clean or replace muffler.
	Fuel is available and spark plug ignites	Mixed fuel quality is inadequate?	Check fuel to oil mixture.
	Fuel is available and spark plug ignites		Flush fuel system and replace
	(compression normal).	Fuel in use inadequate (water, dust)?	Flush fuel system and replace
	(compression normal).	Fuel in use inadequate (water, dust)?	with fresh fuel.
			with fresh fuel.
		Air Cleaner clogged?	Clean or replace air cleaner.
		Defective cylinder head gasket?	Tighten cylinder head bolts or
	Fuel is available and spark plug ignites	Defective cylinder head gasket?	replace head gasket.
	Fuel is available and spark plug ignites		replace head gasket.
	(compression low).	Cylinder worn?	Replace cylinder.
		Spark plug loose?	Tighten spark plug.
	Operation not satisfactory
		Air cleaner clogged?	Clean or replace air cleaner.
	Not enough power available	Air in fuel line?	Bleed (remove air) from fuel line.
	Not enough power available	Fuel level in carburetor float chamber
	(compression normal, no miss-firing).	Fuel level in carburetor float chamber	Adjust carburetor float.
	(compression normal, no miss-firing).	improper?	Adjust carburetor float.
		improper?
		Carbon deposits in cylinder?	Clean or replace cylinder.
		Ignition coil defective?	Flush fuel system and replace
		Ignition coil defective?	with fresh fuel.
			with fresh fuel.
	Not enough power available	Ignition plug often shorts?	Replace ignition wires, clean
	(compression normal, miss-firing).	Ignition plug often shorts?	ignition.
	(compression normal, miss-firing).		ignition.
		Fuel in use inadequate (water, dust)?	Flush fuel system and replace
		Fuel in use inadequate (water, dust)?	with fresh fuel.
			with fresh fuel.
		Excessive carbon deposition in	Clean or replace crankcase.
		combustion chamber?	Clean or replace crankcase.
		combustion chamber?
	Engine overheats.	Exhaust or muffler clogged with carbon.	Clean or replace muffler.
		Spark plug heat value incorrect?	Replace spark plug with correct
		Spark plug heat value incorrect?	type spark plug.
			type spark plug.

PAGE 26 — QP4TH TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #3 (01/29/14)

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Multiquip QP4TH manual Troubleshooting Engine, Engine Troubleshooting, Symptom Possible Problem Solution Difficult to start

Contents

Model QP4TH This Manual Must Accompany the Equipment AT ALL Times Proposition 65 Warning QP4TH Trash Pump Operation and Parts Manual REV. #3 01/29/14 Table of Contents QP4TH Centrifugal Pump Parts Ordering Procedures Ordering parts has never been easier Safety Information Safety Messages „ Never open the priming plug when pump General SafetyPump Safety Serious damage to the equipment or engine Before servicing equipment Engine SafetyFuel Safety „ Use well-insulated gloves when picking up the battery Battery Safety Electric Start onlyTransporting Safety Emissions Information Label must remain with the engine for its entire life Dry Net Weight Specifications PumpSpecifications Pump Model Honda GX340K1QA2 Specifications EngineSpecifications Engines General Information Pump Components Discharge Port Connect a 4-inch discharge hose to this port Muffler Used to reduce noise and emissions Basic EngineInitial Servicing Oil Type Inspection EngineBefore Starting Season Setup Starting the Engine Place the engine ON/OFF switch See in the on positionOperation Place the engine fuel valve lever See to the on position Place the fuel shut-off lever See in the OFF position Stopping the EngineAlways run engine at full speed while pumping Pump Cleaning Maintenance PumpAdjusting Impeller Clearance Pump Vacuum Test Pump Vacuum Tester Engine Maintenance Schedule Maintenance EngineEngine Maintenance First Every Weekly Engine AIR CleanerDaily Engine OIL Spark Arrester Cleaning Spark Arrester Removal Storage Pump Storage Symptom Possible Problem Solution Difficult to start Troubleshooting EngineEngine Troubleshooting Operation not satisfactory Symptom Possible Problem Solution Troubleshooting ENGINE/PUMPPump Troubleshooting Sample Parts List Explanation of Code in Remarks Column Suggested Spare Parts Qty Description Pump Assembly 0482200240 14660001301466040700 0641400430 Pump Assembly 0401450100 14662512410205450100 0451250080 Engine Service Parts 17620ZH7023 17672ZE2W0117672Z4H020 17620Z4H020 Terms and Conditions of Sale Parts Freight Policy QP4TH Trash Pump Operation and Parts Manual REV. #3 01/29/14 HERE’S HOW to GET Help