FARMMAC F660VW Gas Chainsaw Review

The F660VW is a gas-powered chainsaw built around a 92 cc, two-stroke, air-cooled engine with a full crank. It follows the MS660 pattern, and its parts are compatible with STIHL MS660, G660 and NEOTEC NS892 components. In practice that means a large-displacement saw in the big-timber and milling class, with a wide supply of consumables and rebuild parts behind it.

It is built for tree felling, chopping firewood, clearing large patches of land, heavy-duty forestry, and farm and ranch use. Each order ships in two separate packages, so the first box arriving alone is normal.

The headline strength is displacement. At 92 cc and 7 hp, this is a saw built to pull a long bar through big wood, and buyers on Amazon most often praise its power and cutting performance. One customer notes it cuts through oak and hickory logs over 24 inches wide with ease.

The body is magnesium alloy, which gives it better impact resistance, fast heat dissipation and good rigidity, all useful on a saw that gets knocked around in forestry work. The box includes a 36-inch alloy bar, a chain, high-quality spark plugs, an HLHIC carburetor and a flywheel.

Parts compatibility is the practical advantage for an owner who does their own repairs: MS660-pattern parts are widely available. Buyers on Amazon also most often describe the saw as good value for money, and the large majority of ratings are four or five stars.

The power head weighs 18.18 lb with the 36-inch bar, so this is a two-handed, full-size saw, not a limbing tool you wave around with one hand.

Starting and running are not guaranteed out of the box. Buyers on Amazon are divided on performance, with some reporting the saw would not start at all, and durability feedback is mixed too. Assembly draws mostly negative comments, with documentation described as non-existent, and adjustability is the other weak spot buyers raise. Expect to set the saw up and tune it yourself.

The saw is not CARB certified and cannot be sold or shipped to California addresses. Sales are restricted to non-California buyers. There is also no dealer network behind it, so this is an owner-maintained saw: plan on doing your own setup, tuning and repairs.

In use, 92 cc and 7 hp put the saw in the heavy-duty class, where a long bar keeps its speed in big wood. The 18.18 lb power head means a demanding carry rather than a light one. The 3/8-inch pitch and .063-inch gauge are the standard heavy-duty chain size for a bar this long, so replacements are easy to find.

A two-stroke engine needs a fuel and oil mix, and a big one needs a proper break-in before it is asked to work hard. Mix fresh fuel with two-stroke oil at the ratio in the manual that ships with the saw, use ethanol-free fuel where you can get it, and run the first tanks at normal load rather than idling or holding wide-open throttle.

The HLHIC carburetor is adjustable, and this is where the adjustability complaints from buyers come from: plan on tuning it yourself.

Before the first real cut, check and tighten the fasteners, reseat the air filter, confirm the spark plug and its boot are properly seated, and verify the bar oiler is delivering oil to the bar tip.

The saw ships with a 36-inch bar, a long-bar setup that shines on big-diameter felling, bucking large trunks and milling. It is more saw than most firewood cutters need.

Match the bar to the job. A shorter bar is easier to control and less demanding on the oiler for general firewood. The chain is 3/8-inch pitch, .063-inch gauge, full chisel, so you know what class of chain you are running.

Long-bar work is where the power advantage shows, and also where the weight and vibration are felt most.

A 92 cc saw with a 36-inch bar is a serious tool. Keep both hands on the handles at all times, never use a one-handed or top-handle grip, and wear a helmet with a face shield, hearing protection, cut-resistant chaps, boots and gloves.

Kickback risk with a long bar is severe. Keep the bar tip clear of anything you are not cutting, stand to the side of the cut line, and never bore with the tip unless you have been trained. The saw runs loud and vibrates, so limit continuous run time, keep the chain sharp and take breaks.

Felling large timber is a trained skill. If you are not confident, get instruction or hire the felling out. The saw is not CARB certified and cannot be sold or shipped to California addresses.