Today I would like to talk about the Toro Groundsmaster 5900/5910 Mowers. Where I work we usually call these Rotory Tri-Plex Mowers because they have three cutting decks. The 5900 Series mowers have 16 Feet of cutting decks to make big jobs small.
The Toro 5900 mowers are powered by the awesome In-line 4 Cylinder QSB3.3 Cummins Turbo Diesel Engine. It produces 99 Hp (73.8 Kw) @ 2630 RPM and 306 Ft (415 Nm) of Torque @ 1600 RPM. This engine is B20 Biodiesel ready with some of the lowest emissions for off road engines out there now. The name Cummins speaks for itself about quality, durability and performance that you can count on day in day out.

The next thing I would like to talk about is the all new Toro InfoCenter. This new system gives you your normal operator information like Water Temp, Hydraulic Temp, Battery Volts and Fuel Level to name a few. If any service or normal maintenance is dew it will remind you of that also or even how many hours you are over. The mower I looked at told the operator when Engine Temp was warm enough to engage the PTO. If the system senses any variable out of range then it gives an audible alarm and tells you what system it is. There is no need for expensive diagnostic scanners and programs to read the on board computer, it tells you everything you need to know.


To bad Auto Makers can’t learn from this. It appears that most Auto Makers are trying to make it so ever thing goes back to the dealer and Lawn and Turf company’s are trying to make repairing their products as easy an fast as possible by the owner to eliminate down time.

The Toro InfoCenter helps eliminate small problems before the become enormous costly problems. Way to go Toro!
Toro has made sure that you can get to all vital maintenance areas. The Hood pops up to excess everything on the top side of the engine compartment and the side covers are easily removed to get them out of your way. The Hydraulic cooler tilts out to clean it and the engine cooling radiator. What about having to stop ever little bit to clean grass and what ever else out of the air intake screens for the engine cooling and hydraulics. Hope you are keeping these clean because this is the main cause of engine and hydraulic failure!


Toro has come up with what they call the SmartCool System. The way it works is when the system senses the temperature rising to fast or a little higher than normal the cooling fan briefly reverses blasting the debris from from the cooling intake screens. I have seen this for myself and it does work. Remember you still have to clean these air intakes but not as much, which means more grass cut.

What about those operators that stay on the mower all day long through out the year. Toro has the 5910 mower with Factory Installed and fully enclosed 4 Post (ROPS) Cab. The cab is Climate Controlled (Air Condition/Heated) and you can get optional sound system installed. Now thats what I call operator comfort. It does not stop there because it has Tempered Safty Glass, providing 360 degree view and of course a Windshield Washer and Wiper. The cab includes an air ride seat with adjustable height, backrest and adjustable angles on the armrest. The steering tower is also adjustable for operator comfort and viewing the InfoCenter. Toro has mounted the cab to the frame using rubber shock bumpers witch eliminates a lot of the engine and other component vibrations and noises. I really believe that at this time Toro 5900 series is probably the most comfortable mower out there.

Now lets talk about the cutting decks. When the decks are down you have a full 16′ of cutting area.
When you get into narrow places you can raise one wing or both wings and still cut with the deck or decks that are down. If one wing is raised you have 142” of cutting area and with both wings raised the center deck cutting area is 92”. You can set the cutting height anywhere from 1” to 6” for different cutting conditions.
The deck housing are made from extremely heavy reinforced steel. The spindles are 1.25 in. (3.2 cm) diameter spindles and 9.5 in. (24.1cm) Cast Iron Spindle Housings. These housings are about as heavy as I have seen. Toro also has what they call Impact Absorption System which prevents damage and costly repairs to the deck wings. This system consist of a massive spring loaded shock that cushions the wing upon front or rear impacts while swinging the wings up an away from the object.

If its like where I work you have to do some moving from area to area and Tora transports fast.
The 5900’s top speed is 20mph (32.3 Km/h) These side wing will raise straight up to give the operator a clear side and rear view. The The Road Package includes headlights, turn signals, hazard flashers, brake lights and a slowing moving vehicle sign. Need more light, you can also get work lights add on to the 5900’s.

One thing I would like to add about the InfoCenter on the 5900’s. If you are like me and have a little problem with people doing damage to your mowers because they simply will not slow down when they cutting grass, Toro has solved that problem by allowing who ever is incharge of the mowers type in a P.I.N number and save it. With this P.I.N. you can type in as administrator and see a lot of control data history and set the maximum mower speed. If you are the only one with a P.I.N then you are the only one who can change that. “COOL”
You can view the complete Specifications for Groundsmaster 5900/5910 by clicking here.


Our golf coarse has just about totally went all Toro with zero complaints. What few problems we have had we did not have to lift a finger to fix them. Toro sent our dealer Techs out to fix the problems personally, that day.
With the amount of grass that we have to mow in our department I hope that our company will purchase at least one of these 5900 Series mowers very soon.


If anyone has a comment about these mowers or this post (good or bad) please do not hesitate to post your comments, remember we are here to help each other out.
Thanks!!!
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