QP-402H Troubleshooting Engine | Multiquip qp-402h instruction

QP-402H — 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	Carbon deposit at ignition?	Clean or replace ignition.
Fuel is available but spark plug
will not ignite. (Power available	Short circuit due to defective	Replace insulators.
at high tension cable).	Short circuit due to defective	Replace insulators.
at high tension cable).	insulators?
	insulators?

	Improper spark gap?	Set spark plug gap to the correct gap.

Fuel is available but spark plug	Short circuit at stop switch?	Check stop switch circuit. Replace stop switch if defective.
will not ignite. (Power NOT
will not ignite. (Power NOT
available at high tension cable).	Ignition coil defective?	Replace ignition coil.

	Muffler clogged with carbon	Clean or replace muffler.
	deposits?

	Mixed fuel quality is	Check fuel to oil mixture.
Fuel is available and spark plug	inadequate?
ignites (compression normal).
ignites (compression normal).	Fuel in use inadequate (water,	Flush fuel sytem and replace with fresh fuel.
	Fuel in use inadequate (water,	Flush fuel sytem and replace with fresh fuel.
	dust)?

	Air Cleaner clogged?	Clean or replace air cleaner.

	Defective cylinder head gasket?	Tighten cylinder head bolts or replace head gasket.
Fuel is available and spark plug
Fuel is available and spark plug	Cylinder worn?	Replace cylinder.
ignites (compression low ).	Cylinder worn?	Replace cylinder.
ignites (compression low ).
	Spark plug loose?	Tighen 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
(compression normal, no miss-	Fuel level in carbureator float
firing).	Fuel level in carbureator float	Adjust carbureator float
firing).	chamber improper?	Adjust carbureator float
	chamber improper?

	Carbon deposits in cylinder?	Clean or replace cylinder

	Ignition coil defective?	Flush fuel sytem and replace with fresh fuel.
Not enough power available
Not enough power available	Ignition plug often shorts?	Replace ignition wires, clean ignition.
(compression normal, miss-	Ignition plug often shorts?	Replace ignition wires, clean ignition.
(compression normal, miss-
firing).	Fuel in use inadequate (water,	Flush fuel sytem and replace with fresh fuel.
	Fuel in use inadequate (water,	Flush fuel sytem and replace with fresh fuel.
	dust)?

	Excessive carbon depostion in	Clean or replace crankcase.
	combustion chamber?

Engine overheats.	Exhaust or muffler clogged with	Clean or replace muffler.
	carbon.

	Spark plug heat value incorrect?	Replace spark plug with correct type spark plug.

PAGE 26 — QP-402H CENTRIFUGAL PUMP — OPERATION AND PARTS MANUAL — REV. #1 (04/02/08)

qp-402h specifications

The Multiquip QP-402H is a powerful, versatile piece of construction equipment designed for a range of applications, particularly in the construction and operational sectors. Known for its durability and efficiency, the QP-402H is a part of Multiquip’s extensive portfolio of equipment that adheres to the high standards of reliability and performance.

One of the standout features of the QP-402H is its robust Honda GX160 engine, which delivers superior power and performance. The engine is designed for optimal fuel efficiency, allowing operators to maximize their productivity while minimizing operational costs. This machine is engineered to handle a wide variety of tasks, from producing high-quality concrete to powering various construction tools, making it an invaluable asset on job sites.

In terms of design, the QP-402H features a heavy-duty construction, which ensures its longevity even under strenuous working conditions. The unit is equipped with an advanced compressor system that provides consistent air supply for up to four pneumatic tools simultaneously. This multi-tool capability significantly enhances productivity on the job site, allowing crews to work more efficiently without having to wait for equipment to become available.

The QP-402H incorporates sophisticated technologies to ensure user-friendly operation. Its intuitive controls are designed to be easily accessible, enabling operators to quickly adjust settings and manage functions with minimal effort. Additionally, the compact design of the unit allows for easy transportation and maneuverability, making it a suitable choice for both large scale and tight-space projects.

Another notable characteristic of the QP-402H is its low noise level, which is increasingly important in urban environments where noise regulations are strict. This quiet operation ensures that tasks can be completed with minimal disruption, promoting better relations with surrounding communities.

Safety is a primary consideration in the design of the Multiquip QP-402H. The machine is equipped with various safety features, including a protective cage for the engine and secure fastenings for operational stability. These features contribute to a safer working environment for operators and personnel on-site.

In conclusion, the Multiquip QP-402H stands out as a reliable, efficient, and versatile solution in the realm of construction equipment. Its powerful engine, user-friendly technologies, robust construction, and safety features make it an ideal choice for professionals who require high-performance equipment that can handle varied demands in challenging environments.