TROUBLESHOOTING

Practically all breakdowns can be prevented by proper handling and maintenance inspections, but in the event of a breakdown, please take remedial action following the diagnosis based on the following troubleshooting tables.

If the problem cannot be remedied, please leave the unit as is and consult Multiquip's service department.

Table 8. Engine Troubleshooting

 

Symptom

Possible Cause

Solution

 

 

 

 

 

 

 

 

Spark plug bridging?

Check gap, insulation or replace spark plug.

 

 

 

 

 

 

 

Difficult to start, "fuel is

Carbon deposit on spark plug?

Clean or replace spark plug.

 

 

available but no SPARK at

Short circuit due to deficient spark

Check spark plug insulation, replace if worn.

 

 

spark plug".

plug insulation?

 

 

 

 

 

 

 

 

 

 

 

 

Improper spark plug gap?

Set to proper gap.

 

 

 

 

 

 

 

 

ON/OFF switch is shorted?

Check switch wiring, replace switch.

 

 

 

 

 

 

 

 

Ignition coil defective?

Replace ignition coil.

 

 

 

 

 

 

 

Difficult to start, "fuel is

Improper spark gap, points dirtry?

Set correct spark gap and clean points.

 

 

available, and SPARK is

 

 

 

 

Condenser insulation worn or short

 

 

 

present at the spark plug".

Replace condenser.

 

 

 

circuiting?

 

 

 

 

Spark plug wire broken or short

Replace defective spark plug wiring.

 

 

 

circuiting?

 

 

 

 

 

 

 

 

 

 

 

Difficult to start, "fuel is

Wrong fuel type?

Flush fuel system, and replace with correct

 

 

type of fuel.

 

 

available, spark is present

 

 

 

 

 

 

 

Water or dust in fuel system?

Flush fuel system.

 

 

and compression is

 

 

normal"

 

 

 

 

Air cleaner dirty?

Clean or replace air cleaner.

 

 

 

 

 

 

 

 

 

 

 

Suction/exhaust valve stuck or

Re-seat valves.

 

 

 

protruded?

 

 

 

 

 

 

 

 

 

 

 

Difficult to start, "fuel is

Piston ring and/or cylinder worn?

Replace piston rings and or piston.

 

 

available, spark is present

Cylinder head and/or spark plug not

Torque cylinder head bolts and spark plug.

 

 

and compression is low"

tightened properly?

 

 

 

 

 

 

 

 

 

 

 

 

Head gasket and/or spark plug gasket

Replace head and spark plug gaskets.

 

 

 

damaged?

 

 

 

 

Fuel not available in fuel tank?

Fill with correct type of fuel.

 

 

 

 

 

 

 

 

Fuel cock does not open properly?

Apply lubricant to loosen fuel cock lever,

 

 

 

replace if necessary.

 

 

No fuel present at

 

 

 

 

 

 

 

 

Replace fuel filter.

 

 

carburetor.

Fuel filter clogged?

 

 

 

 

 

 

 

 

Fuel tank cap breather hole clogged?

Clean or replace fuel tank cap.

 

 

 

 

 

 

 

 

Air in fuel line?

Bleed fuel line.

 

 

 

 

 

 

 

 

 

 

 

MVC-82VH/VHW • OPERATION AND PARTS MANUAL — REV. #1 (04/25/08) — PAGE 23

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Multiquip MVC-82VHW manual Engine Troubleshooting

MVC-82VH, MVC-82VHW specifications

The Multiquip MVC-82VHW and MVC-82VH are advanced walk-behind vibratory plate compactors, designed for efficient soil compaction in various construction and landscaping applications. These models combine robust engineering with cutting-edge technologies, making them ideal for both professionals and contractors.

The MVC-82VHW is powered by a reliable Honda GX160 engine, delivering impressive performance with minimal vibration. This model stands out due to its built-in water tank system, which allows for the effective compaction of asphalt while reducing the risk of material sticking to the base plate. Furthermore, the MVC-82VHW features an easy-to-use hand throttle, allowing operators to adjust the engine speed on the fly to suit specific job requirements.

On the other hand, the MVC-82VH is equipped with a durable Robin Subaru engine, known for its impressive torque and fuel efficiency. Both models feature a heavy-duty, high-quality steel frame that is designed to withstand the rigors of daily use on tough job sites. Their compact design allows for easy transportation and maneuverability, even in confined spaces.

A key characteristic of both models is their high-frequency vibration technology. This feature ensures optimal compaction in a variety of soil types, from granular to cohesive materials. The MVC-82s provide an operating frequency that allows them to achieve excellent compaction depth, making them a valuable asset for construction sites, road repairs, and landscaping tasks.

User comfort is also a significant consideration in the design of the MVC-82 series. The machines are outfitted with padded handles, which reduce operator fatigue during prolonged use. Additionally, the low center of gravity design enhances stability and control, allowing operators to handle challenging terrains with confidence.

In summary, the Multiquip MVC-82VHW and MVC-82VH compactors are exceptional machines that deliver superior performance and durability. With powerful engines, high-frequency vibration technology, and user-centric design features, these models are ideal for maximizing efficiency in compaction tasks across various job sites. They represent an investment in quality and reliability, setting a standard in the compacting equipment market. Whether for asphalt or soil compaction, these machines make the job easier and more efficient.