Most weeks we load mowers into a container and send them out. Buyers open with acreage, but what decides the machine is cutting width, engine displacement and drive type. Width sets how much ground you cover in a shift, displacement decides whether the engine survives your terrain, and tracks or wheels decide how steep a bank the thing will climb before it gives up. Choose those three badly and you will spend the season fighting the equipment instead of cutting grass.

This is the order we ask those questions in, plus the paperwork that travels with a US shipment.

1. Match cutting width to the size of the job

Cutting width is the first number we ask about, because it moves productivity more than anything else on the spec sheet. A wider deck cuts more area per pass. That is worth paying for only when the ground is open enough to use the width.

Rough bands we use: a 550mm deck suits lawns, orchards and roadside banks under about two hectares. An 800mm deck roughly halves the number of passes on larger fields. Machines of 900mm and up are for serious acreage, municipal verges and commercial contracts where the hours get billed.

The TorqMax SDL series covers that range, from compact units to heavy-duty machines:

Model Cut width Engine Best for
SDL224-55A 550mm 224cc gasoline Lawns, orchards, banks
SDL452-70B 700mm 452cc gasoline Medium fields, estates
SDL452-80C 800mm 452cc gasoline Larger fields, contractors
SDL608-80B 800mm 608cc gasoline Heavy grass, commercial
SDL195-80B 800mm diesel Sustained commercial use
SDL764-90A 900mm 764cc gasoline (19kW) Big acreage, municipalities

To size it yourself, divide your mowable area by the deck width and compare the pass counts. Or tell us the acreage and the terrain and we will pick a width for you. We turn down models we think are wrong for the ground.

2. Pick the engine for the workload

Gasoline engines, LONCIN across the whole SDL range for us, suit medium duty. Service is straightforward, parts are easy to find and the buy-in is low. Diesel costs more at the start and pays it back on long days, where the lower fuel cost and the longer service intervals add up across a season.

Hours per week decide this, not the size of the property. Ten hours a week on a damp hillside works an engine harder than three hours on flat pasture.

  • Under 10 hours a week. A 224-452cc gasoline model is economical and simple to maintain.
  • 10-30 hours a week. Step up to 452-608cc gasoline for thermal headroom in tall or damp grass, where the engine works harder than the figures suggest.
  • Continuous commercial duty. The diesel 800mm SDL195-80B runs cooler and drinks less over a long summer.

Displacement also decides blade momentum. More power under a heavier deck keeps cutting through thick growth instead of stalling, which is why the 764cc 900mm SDL764-90A pairs the widest deck in the range with the strongest engine. On paper a smaller engine looks fine. In knee-high grass after a wet week it is not.

3. Tracks or wheels

Rubber tracks keep grip on wet grass, on slopes and on soft ground that swallows tires, and they spread the weight so turf damage stays low. It is the same physics that puts tracks on construction equipment, as we describe in why tracked machinery beats wheeled equipment in mud and soft soil. Wheels are lighter, simpler and cheaper to replace. They also slip on gradients and cut ruts in wet ground.

Slope tells you which one you need:

Slope Recommendation Why
Under 15 degrees Either Wheels fine on firm ground
15-25 degrees Tracked Traction on wet grass and banks
Over 25 degrees Tracked + RC operation Operator stays off the slope entirely

Past roughly 20 degrees, take a tracked machine and run it by remote so the operator stays on level ground. Municipal crews mow embankments that way. It is the plainest reason remote control exists at all.

4. Slope safety and why remote operation changes the sum

A walk-behind mower on a wet bank is one of the most common serious accidents in grounds maintenance. When the machine starts to roll or slide, it goes toward the person holding it, and the reaction time is not there. Remote control takes the operator out of the fall line. He stands on level ground, clear of the blade, the dust and the thrown stones, and drives from the handheld remote. That is why professional grounds-care bodies and municipal safety programs keep writing remote mowers into embankment and ditch work.

Fewer trips come out of the same setup. One operator clears a bank that used to need a second man walking beside the machine, and that man was never doing much work anyway. For a contractor the saving is the real payback, well before any fuel saving.

5. EPA compliance for US import

Importing into the United States, the engine has to carry a current EPA Certificate of Conformity for non-road spark-ignition engines, and the machine should display the required engine label. The wrong engine family on the certificate becomes a hold at the port. Our gasoline models use LONCIN engines covered by a current EPA certificate, and we send the paperwork out with export orders. There is a walkthrough in our EPA certificate guide for importers showing what the document looks like and how customs verifies it. European buyers should request CE documentation with the order. Both are standard parts of the export file we prepare for each shipment.

6. Maintenance and the parts you will actually need

These machines stay cheap to run if you plan the consumables before the season starts. Blades wear fastest by a wide margin, so replacement blades come first, then air and fuel filters, spark plugs on the gasoline models, and rubber-track sections where the ground is abrasive. Buying factory-direct means the wear parts come off the same line as the machine, so nobody is hunting for a blade that fits in the middle of June. Ask for a spares kit with the first order. Most operators we deal with keep a blade set and filters in the truck all season.

7. Decision checklist before you order

  • Have you measured the mowable area and the steepest slope?
  • Does the width come from the pass-count arithmetic, somewhere in 550-900mm?
  • Is the engine matched to weekly hours, gasoline or diesel?
  • Is the chassis tracked if any slope runs past about 20 degrees?
  • Does the EPA or CE paperwork match the market you are importing into?
  • Is a spares kit in the quote?
  • If you are a distributor, have you settled OEM branding?

Tick all seven and you are ready to order. If one of them is still unclear, a two-minute call with a factory rep settles it faster than another week of reading.

Frequently asked questions

What does remote control add?

Your operator stands clear of the blades, the dust and the debris thrown out the side. That matters on slopes and around trees and fences. It also lets one person mow a bank that would otherwise need somebody walking alongside, which is where most of the labor saving comes from.

Do I need a diesel engine?

Only for very large areas or continuous commercial use, where the machine runs most of the day. Gasoline is cheaper to buy and simpler to maintain, and for seasonal work that is the better deal. Weeks of sitting idle do not suit a diesel.

How steep a slope can a tracked RC mower handle?

Our rubber-tracked SDL models hold traction well past the angle a walk-behind operator should ever attempt. Above roughly 25 degrees we treat remote operation as the only safe way to cut grass, because the machine is the only part of the pair that cannot slip and fall. Traction is seldom the limit; nerve usually is.

Is the 900mm model worth the jump from 800mm?

If you mow large open acreage every week, yes. That extra 100mm per pass compounds across a season into real hours and real fuel. If most of your work is tight orchard rows or narrow gaps between trees, stay with the 800mm. It turns in less space and you will not miss the width.

How much area can a remote-controlled mower clear in a day?

Terrain, grass height and stops to clear wet clumps change the daily figure, so we will not quote one number. Deck width sets the ceiling: a 550mm machine needs roughly double the passes of an 800mm, and the 900mm model exists because long municipal verges reward fewer overlapping runs. Tell us the acreage and interval and we will size it.

Is OEM/ODM available?

Yes. We customize specifications, colors, branding and packaging for distributors and project buyers. Minimum order quantities and tooling costs depend on what changes, so send the requirement early and we will put a number against it before you commit to a container.

How long does a factory order take?

Stock models usually ship 15-30 days after the deposit clears. Custom ODM builds run longer, and the extra time depends on how far the changes go: new housing molds take far more than a color and a decal. Build the lead time into your season, not into the week you run out of machines.

Last updated: September 14, 2026. Prices, specs and certifications verified with the factory.

Ready to spec yours? Send us three things: acreage, steepest slope and weekly hours. We reply within 12 hours, Monday to Saturday, GMT+8, with a model recommendation and factory-direct pricing. Email sale@inqulm.com or send an inquiry.

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