Melroe Bobcat 610 Specs and Parts Guide

The Melroe Bobcat 610 is a classic skid steer built through the 1970s and into the early 1980s, powered by a Wisconsin VH4D four cylinder air cooled gasoline engine producing roughly 30 to 35 horsepower. Operating weight is around 3,200 to 3,800 lb, and drive is by mechanical clutch and variable belt rather than hydrostatic.

Quick Facts

• Era: 1970s into the early 1980s, built by the Melroe Company
• Engine: Wisconsin VH4D, air cooled gasoline, not diesel
• Power: approximately 30 to 35 hp
• Operating weight: roughly 3,200 to 3,800 lb
• Rated capacity: around 1,000 to 1,200 lb
• Drive: mechanical clutch and belt, not hydrostatic

What Is a Melroe Bobcat 610?

The 610 dates from the period when the Bobcat name belonged to the Melroe Company, before the business passed to Clark and later to the Bobcat Company as it exists today. Machines from this era carry Melroe branding and are frequently listed as M-610.

Two things make it genuinely different from anything built since, and both matter far more than the specification table.

It runs on gasoline, not diesel. The Wisconsin VH4D is an air cooled four cylinder petrol engine. Owners arriving from modern machines expect a diesel and are frequently surprised.

It is not hydrostatic. Drive is through a mechanical clutch and a variable belt arrangement, closer in principle to a snowmobile pulley system than to the twin hydrostatic pumps used on every modern skid steer.

Those two facts shape everything about owning one, from what it feels like to operate to which parts you will ever need.

What Are the Bobcat 610 Specs?

Specification	Figure
Production era	1970s into the early 1980s
Engine	Wisconsin VH4D, 4 cylinder air cooled gasoline
Horsepower	approximately 30 to 35 hp
Operating weight	roughly 3,200 to 3,800 lb
Rated operating capacity	around 1,000 to 1,200 lb
Drive system	Mechanical clutch with variable belt drive

The figures are given as ranges deliberately. These machines were built over roughly a decade with variations along the way, and after fifty years many have been modified, repowered or rebuilt. A range that covers the honest spread is more useful than a single number presented with false precision.

What Engine Is in the Melroe Bobcat 610?

A Wisconsin VH4D, an air cooled four cylinder gasoline engine of roughly 30 to 35 horsepower.

Air cooled means no radiator, no coolant and no water pump, which removes an entire category of failure. It also means cooling depends on airflow through the shrouding, so debris packed around the cylinders causes overheating that no temperature gauge will warn you about.

The characteristics owners report consistently:

• Cold starting can be stubborn. The air cooled gasoline setup is less willing in low temperatures than owners expect
• Keeping the shrouding clear matters, because that airflow is the entire cooling system
• Ignition components are ordinary maintenance items, unlike on a diesel where there are none

Wisconsin engines were used across a wide range of industrial equipment, generators and agricultural machinery, which is why specialist support for them still exists decades on. That breadth of application is what keeps a fifty year old machine viable.

How Much Can a Bobcat 610 Lift?

Rated operating capacity is in the region of 1,000 to 1,200 lb, with operating weight around 3,200 to 3,800 lb.

Those numbers place the 610 alongside modern compact machines on paper. In practice the belt drive changes how that capacity delivers. Power comes through a clutch and variable belt rather than hydrostatic pumps, so the machine behaves differently under load, and a belt out of adjustment feels jerky in a way no modern machine does.

Owners used to hydrostatic controls need a period of adjustment. The 610 is not worse, but it is mechanical, and it rewards being driven rather than operated.

What Is the Drive System and Why Does It Matter?

This is the single most important thing to understand before buying or repairing a 610.

Modern skid steers use two hydrostatic pumps, one per side, with speed and direction controlled hydraulically. The 610 instead uses a mechanical clutch and a variable belt drive, comparable in principle to the pulley arrangement in a snowmobile.

The consequences:

• Belts and clutch components are wear items in a way they are not on any modern machine, and adjustment is part of routine maintenance
• Jerky operation usually means adjustment, not failure. A belt out of adjustment is the most common complaint and is frequently fixable rather than terminal
• Hydrostatic parts do not exist on this machine, so there is no drive pump or drive motor to fail or to source
• Diagnosis is mechanical. What is wrong can usually be seen and felt, which suits owner repair

That mechanical simplicity is the machine's genuine strength. There is no controller, no sensor, no diagnostic code. On a fifty year old machine, having nothing electronic to fail is worth a great deal.

Where Is the Serial Number on a Melroe Bobcat 610?

Look on the rear of the machine and inside the operator area. On machines of this age the plate is frequently gone entirely, and numbers stamped directly into the frame are often the only identification remaining.

The 610 predates the 17 character machine identification number by decades, so there is no year encoded anywhere in the serial and no modern decoder applies. Dating one is done from documentation, from a serial range chart via a dealer, or from the machine itself.

The engine carries its own Wisconsin serial, and on a machine this old that number matters as much as the machine number. Repowers are common, so what is fitted may bear no relationship to what left the factory.

Our guide to Bobcat serial numbers on older machines covers every fallback location worth checking, including the frame stamping that survives when a riveted plate has not.

Are Bobcat 610 Parts Still Available?

Better than most people expect for a machine of this age, but the sources are split three ways and knowing which is which saves a lot of searching.

Engine parts come through Wisconsin engine specialists rather than skid steer suppliers, because the VH4D was used across many machines beyond Bobcat.

Drive system parts, meaning belts and clutch components, are the ones specific to this generation and have no modern equivalent. These are specialist items.

Wear hardware is the most available category. Bushings, pins and general hardware were shared or are dimensionally straightforward. A Weld-On Bushing replacing Bobcat 6702958 and a Wear Bushing replacing Bobcat 6730997 illustrate the class of part that remains straightforward to source.

Be honest with yourself about the split before starting a restoration. Wear parts are easy, engine parts are findable, and drive system components are where a project can stall.

What Should You Check on a Melroe 610?

Machines this old are bought on condition alone, and the areas that matter are not the ones that matter on a modern loader.

• Belt and clutch condition and adjustment. This is the drive system, and it is where the machine is most likely to need work
• Engine cooling shrouding. Missing or damaged shrouds cause overheating on an air cooled engine, and they are frequently discarded during past repairs
• Frame and lift arm condition, including previous welding, since fifty years of work leaves evidence
• Loader arm pins and bushings, the same wear point as on any loader
• Cold start behaviour, which reveals ignition and fuel system condition on a gasoline engine
• What has been changed. Repowers and modifications are common, and they change what parts you will need permanently

Customers are responsible for verifying fitment before ordering. On a machine this age, sending photographs of the part alongside any numbers you can read is frequently more productive than a part number search. Email sales@partsonline.com and our team will work from what you have. Consult a certified mechanic for engine and drive system repairs.

Browse general wear hardware at Bobcat Parts.

Frequently Asked Questions

What year did Bobcat make the 610?

The 610 was built through the 1970s and into the early 1980s by the Melroe Company. There is no year encoded in the serial number, so dating a specific machine relies on documentation or a serial range chart through a dealer.

How much will a Bobcat 610 lift?

Rated operating capacity is around 1,000 to 1,200 lb, with an operating weight of roughly 3,200 to 3,800 lb. Figures vary across the production run.

What is a 610 Bobcat worth today?

Value depends heavily on whether the engine and drive system are sound, since those are the expensive areas to put right. A running, well adjusted machine is worth considerably more than one needing belt and clutch work.

What engine is in a Melroe Bobcat 610?

A Wisconsin VH4D four cylinder air cooled gasoline engine of roughly 30 to 35 horsepower. It is petrol rather than diesel, which surprises owners coming from modern machines.

Is the Bobcat 610 hydrostatic?

No. Drive is by mechanical clutch and variable belt, closer in principle to a snowmobile pulley system. There is no drive pump or drive motor, and belts and clutch components are routine wear items.

Why is my Bobcat 610 jerky to drive?

Most often belt adjustment rather than failure. The variable belt drive needs correct adjustment to deliver power smoothly, and out of adjustment belts produce exactly that symptom.

Why is my Melroe 610 hard to start in cold weather?

Air cooled gasoline engines of this era are known for stubborn cold starting. Ignition and fuel system condition make a substantial difference, and both are ordinary maintenance items on a petrol engine.

Are Melroe Bobcat 610 parts hard to find?

It depends on the category. Wear hardware such as bushings and pins is straightforward. Wisconsin engine parts come through engine specialists. Belt and clutch drive components are the specialist items and the ones most likely to hold up a project.