Technical details

Rated power29.8 kW / 40.5 hp
Gear typeHydrostatic
Motor typeV-Twin Vanguard EFI
CO2736 g/kWh
Device weight without refuelling1662 lb

Features

The pictures shown are sample photos. The actual appearance of the equipment features and their specific attachment to the product may differ from the pictorial representations, but will have the same functionality.

Hydro-Gear® ZT-5400 transaxles offer a top forward ground speed of twelve mph and a top reverse speed of five mph, as well as nine inch cooling fans to prevent overheating.
Commercial-Grade Hydro-Gear® ZT-5400 Transaxles Include 9" Cooling Fans
Dual-function hour meter tracks both run time and hours of mowing time to assist users in keeping up with regular maintenance tasks.
Dual-Function Hour Meter
Two-belt mower drive system results in less strain and flex on the belts, allowing the belts to run cooler and enabling a longer lifespan and less maintenance.
Efficient Two-Belt Mower Drive System
Chute allows grass clippings to be released to the side of the mower and out of the way of the cutting path.
Flexible Side Rubber Discharge Chute
Flip-up floor provides convenient serviceability and cleaning of the mowing deck.
Flip-Up Floor Pan
Users can easily adjust the cutting height while seated.
Foot-Operated Cutting Height
Adjustable to suit your yard’s terrain, the rear suspension uses shock absorbers to help stabilize the machine for a consistent cutting height and a smooth, comfortable ride.
Four-Wheel Suspension System with Independent Front Suspension and Rear Shock Absorbers
The STIHL RZ 900 Series features taper lock spindle pulleys to ensure perfect belt alignment and the tightest fit between the pulley and spindle to ensure a long service life.
Heavy-Duty 10" Cast Iron Greaseable Mower Deck Spindles with Taper Lock Pulleys
Independent front suspension features two control arms that connect to shock absorbers, designed to ensure wheels remain perpendicular to the ground throughout the range of travel.
Independent Front Suspension with Mower Deck Height Compensation
Cup holders conveniently keep drinks secure and within reach.
Integrated Cup Holders
With a fuel gauge that is visible from the operator's seat, not only can users monitor fuel level and experience fuel coverage for large jobs, but the wide opening also makes fueling easy.
Large Fuel Capacity
A majority of STIHL products sold in America are made in America of U.S. and global materials.
Made in America
The STIHL RZ 900 Series features a premium suspension seat with adjustable backrest, adjustable lumbar support, and adjustable armrests.
Premium Suspension Seat
The advanced ROPS features polyurethane blocks to prevent rattling while in motion and conveniently folds for easy storage and trailer transport between jobs.
Roll Over Protection System (ROPS)
The adjustable rear suspension with shock absorbers are designed to help provide performance and comfort while mowing uneven surfaces.
Swingarm Rear Suspension with Shock Absorbers
This zero-turn mower features a rear trailer hitch for towing additional accessories and attachments.* *Accessories and attachments sold separately.
Trailer Hitch
Two USB-A ports provide 3.15 amps of power to charge devices.
Two USB-A Ports
Vanguard® Oil Guard™ System features a separate oil tank, transferring cool oil to the engine—helping oil last longer, increasing working times, and allowing for less maintenance.
Vanguard® Oil Guard™ System

Hazard Warnings

Proposition 65 - English

This product contains chemicals known to the State of California to cause cancer and reproductive harm. www.P65Warnings.ca.gov

General Power Tool

Improper use of any power tool may cause serious or fatal injury. Read, understand, and follow carefully the operating and safety instructions in your instruction manual before using such products. STIHL products sold through U.S. STIHL Dealers are for distribution in the United States only. Improper use of any power tool may cause serious or fatal injury. Read, understand, and follow carefully the operating and safety instructions in your instruction manual before using such products. STIHL products sold through U.S. STIHL Dealers are for distribution in the United States only.

Service & tips