2021 Yamaha Mountain Max LE 165. The second generation 794cc 2-stroke twin-cylinder engine features a battery-free fuel injection system controlled by an ECM and an electronic oil injection system. Auxiliary boost valves move in three stages to control the flow of fuel into the calibrated exhaust pipe with a stainless steel exhaust manifold and muffler. The exhaust detonation temperature sensor (EDTS) monitors the system. Spark ignition is via a digital CDI system with detonation sensor; cooling is via a liquid heat exchanger. The electric starter is standard.
The lowered, rounded track housing provides a low, gradual approach angle – 9.4°. The lightweight track housing features narrow, tapered steps for easy maneuvering in deep snow and provides ample clearance for the 8-tooth Power Claw track’s extraverted sprockets.
The rear suspension, with its 15 inches (38 cm) of travel, utilizes an all-lightweight single-spar frame to provide exceptional handling in deep snow and on steep slopes. This advanced frame design features a single pivot point in the middle of the spar, which is installed along the centerline of the track. The resulting flexibility of the track and balance point translates into very precise handling. It’s never been easier to make your way through the snow – both on level trails and on steep inclines. Because this single-spar design offloads 4.5 kilos and doesn’t accumulate snow like traditional double-spar suspensions, the snowmobile feels lighter in real-world conditions.
One of the switches on the left side of the dash allows you to change the heat intensity of the heated grips and the thumb warmer “on the fly”. A convenient rocker switch is used to select information on the dashboard, and the push-button reverse switch, also integrated into the left-hand grip, can be selected just as easily. On the right, the bald handle includes the ergonomic throttle and the self-contained emergency engine cut-off. The Hayes “Stealth” brake cylinder is combined with a composite lever and lightweight caliper to provide excellent modulation, feel and braking power.
The single-spoke suspension features heavy-duty Fox Zero coilover amortos with QS3 on both the front and rear arms for quicker shifting between gears. In addition, the rear arm is equipped with the mountain-specific QS3L feature, which offers a locking mode specifically for steep climbs. Other advantageous features include a special sealed de-icing system, speed-sensitive damping and hard-anodized components.
PERFORMANCE
Fox 1.5 Zero QS3 coil spring and high pressure gas (GHP) amortos feature a docked reservoir to beautifully counteract sag and provide exceptional control. Three compression damping settings make it a snap to tailor performance to the terrain and your riding style.
The single-ply track has 3-inch-high bars set on a 3.5-inch pitch, angled forward and offset from each other to bite into deep snow. Their length ensures continuous forward movement and lift – you don’t have to worry about steep hills!
Boost valves adjust the exhaust port opening based on engine speed to maximize peak torque and optimize fuel efficiency throughout the powerband.
Electronic fuel injection delivers fuel very efficiently to two injection points in the cylinder, depending on engine speed, maximizing torque and throttle response. Computer-controlled fuel injection provides reliable cold weather starting, maximizes range and delivers low exhaust emissions.
TEAM’s proven primary and secondary pulleys shift smoothly and accurately from one gear to the next and perform brilliantly in cold conditions, maximizing performance and belt life.
MANIABILITY
In deep snow, the streamlined, ultra-compact SRV-M front suspension reduces annoying drag from spindles and suspension components. Narrow ski spacing allows for extreme maneuvers and bold lean angles so daredevil snowmobilers can push their limits on cross-country and powder turns. Lightweight, forged-aluminum stub axles combine with generously curved upper and lower delta arms to provide a wide casting angle that’s ideal for sidecountry riding and easy steering. The narrow ski spacing and lack of sway bars greatly enhance the snowmobile’s agility in deep snow.
The SRV-M mountain-specific frame combines a triangulated structure with a lightweight aluminum design to create a very balanced, rider-oriented snowmobile. Its pyramid-shaped top frame strengthens the chassis without adding weight. Its perforated running boards are reinforced to withstand the rough and tumble of daring riders.
The long, specialized steering column is ergonomically ideal for standing up and running. The 4.5-inch lift flange combines with the wide, molded handlebars with curved tips for mountain riding and the integrated climbing strap to give you the leverage you need for off-road fun. The steering can be adjusted to fine-tune caster and attack angles so you can maintain your ideal riding position.
Engineers designed the SRV chassis with mass centralization in mind. Approximately 60 percent of the snowmobile’s mass is centered in the main triangle. The result is a balanced and obedient snowmobile that can be enjoyed in a wide range of conditions.
Yamaha’s lightweight mountain skis deliver everything you need to waltz through deep snow. Their large footprint helps increase lift and actively lifts the front section of the snowmobile into deep powder. Traction bars on the top of the skis help keep your feet firmly planted when the ride gets really rough. Their wide, deep keel reduces the effort required at the handlebars, but it also delivers predictable handling that inspires confidence-both in hard-packed snow and in freshly fallen snow.
CONFORT
The 39.4-liter tank allows you to fool around for a long time before asking to go to the gas pump again.
The lightweight, tall, narrow M-TX mountain seat is shorter and more tapered in the front than our standard trail seat. It makes it easier for the rider to move sideways and improves the ergonomics of stand-up riding.
The myriad of easy-to-read digital gauges display a variety of critical information. You can see your speed, fuel level, distance traveled, tachometer readings, altitude, temperatures and more at a glance. Switching functions is a breeze with the left-hand grip controls.
To restart the engine and shift into reverse, simply push a button. The back-up alarm sounds once you put the car in reverse, and the warning tone continues to sound until you press the button again to turn off the ignition and start the car in forward gear. How cool is that? It’s a simple, lightweight and effective way to get out of a tight spot.
A convenient under-seat bag provides additional storage space. Semi-rigid, easy to access and water resistant, it keeps your essentials safe and dry. Easy-to-release quarter-turn fasteners make it easy to remove.
Other Models Available:
- 2021 Yamaha Mountain Max LE 155
Find all the information on these models by visiting Yamaha-motor.ca
