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How Fast to Run a ZeroTurn Mower #4792560
06/20/18 08:10 PM
06/20/18 08:10 PM
Joined: Sep 2002
Posts: 2,540
VA
Gebo Offline OP
Gebo  Offline OP

Joined: Sep 2002
Posts: 2,540
VA
I've always had rider mowers where they say to run them full throttle when mowing grass. Well, I did that today with my ZTurn and I am assuming it was very entertaining for my neighbors. At what speed do I run a ZTurn?


'98 LEX LS400 290K
'02 4Runner 230K
'05 Lex LS430 85K
'07 Lex GX470 65K
Amsoil in last two.
Schaeffer in the first two.

Re: How Fast to Run a ZeroTurn Mower [Re: Gebo] #4792567
06/20/18 08:16 PM
06/20/18 08:16 PM
Joined: May 2010
Posts: 9,730
out there
spasm3 Offline
spasm3  Offline

Joined: May 2010
Posts: 9,730
out there
I run my toro zturn at full throttle. But the hydro's control forward speed. I have a two speed selector for fast/slow.


13 elantra 75k 5w30 QSUD
03 chevy avalanche 80k synpwr 5w30
17 mazda cx-5 9500 miles m1 0w30
Re: How Fast to Run a ZeroTurn Mower [Re: Gebo] #4792569
06/20/18 08:16 PM
06/20/18 08:16 PM
Joined: Nov 2009
Posts: 5,195
Houston, Texas
motor_oil_madman Offline
motor_oil_madman  Offline

Joined: Nov 2009
Posts: 5,195
Houston, Texas
The sales guy at the mower dealer said they're designed to run at top speed. Assuming it's smooth enough and the grass is at your standard weekly 3" long. Now this is only if you have a side discharge. If you have a mulch kit, you'll probably have to slow down a bit. I find a mower is like a boat, it's usually too bumpy to run them at full speed.

Last edited by motor_oil_madman; 06/20/18 08:17 PM.

2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.

Re: How Fast to Run a ZeroTurn Mower [Re: Gebo] #4792571
06/20/18 08:17 PM
06/20/18 08:17 PM
Joined: Jun 2002
Posts: 6,529
MI
doitmyself Offline
doitmyself  Offline

Joined: Jun 2002
Posts: 6,529
MI
You run the engine at full throttle for the steering pumps and blade speed to operate correctly. You adjust your traveling speed via the control handles to match your conditions (grass height, ground roughness, etc.). Commercial ZTR's have faster blade speeds (and other attributes) to handle faster mowing.

Re: How Fast to Run a ZeroTurn Mower [Re: Gebo] #4792582
06/20/18 08:28 PM
06/20/18 08:28 PM
Joined: May 2015
Posts: 178
Virginia
GravelRoad Offline
GravelRoad  Offline

Joined: May 2015
Posts: 178
Virginia
The same. Full throttle for fastest blade speed and adjust your driving speed according to grass/terrain.

What were you doing "entertaining for my neighbors"? Spinning in circles? crackmeup


2016 Subaru Outback Premium 2.5. PP 5w30 oem filter
2018 Hyundai Kona 1.6T. Lifetime dealer free oil/filter change
Re: How Fast to Run a ZeroTurn Mower [Re: Gebo] #4792590
06/20/18 08:32 PM
06/20/18 08:32 PM
Joined: May 2010
Posts: 9,730
out there
spasm3 Offline
spasm3  Offline

Joined: May 2010
Posts: 9,730
out there
Just be aware that while you can " zero turn" , doing so on wet grass at the shortest turning radius will tear the grass.


13 elantra 75k 5w30 QSUD
03 chevy avalanche 80k synpwr 5w30
17 mazda cx-5 9500 miles m1 0w30
Re: How Fast to Run a ZeroTurn Mower [Re: Gebo] #4792605
06/20/18 08:43 PM
06/20/18 08:43 PM
Joined: Aug 2003
Posts: 11,152
Buffalo, NY
JTK Offline
JTK  Offline

Joined: Aug 2003
Posts: 11,152
Buffalo, NY
Are we talking max ground speed or max governed engine RPM?

Running the engine at max RPM is recommended for pretty much all OPE.

For ground speed, you can go as fast as your terrain, mowing and safety needs dictate.


2017 Ram 1500 4x4, 3.6L. 2016 Nissan Quest SV (Babe magnet IV)
Re: How Fast to Run a ZeroTurn Mower [Re: Gebo] #4792788
06/21/18 05:57 AM
06/21/18 05:57 AM
Joined: Sep 2002
Posts: 2,540
VA
Gebo Offline OP
Gebo  Offline OP

Joined: Sep 2002
Posts: 2,540
VA
I am talking about the engine speed. It seemed hard to control the ground speed and turning and such when I had the engine RPM's at full throttle. And I do have a mulching kit.

I felt out of control but it was my first time using the ZTurn.


'98 LEX LS400 290K
'02 4Runner 230K
'05 Lex LS430 85K
'07 Lex GX470 65K
Amsoil in last two.
Schaeffer in the first two.

Re: How Fast to Run a ZeroTurn Mower [Re: Gebo] #4792878
06/21/18 07:28 AM
06/21/18 07:28 AM
Joined: Nov 2009
Posts: 5,195
Houston, Texas
motor_oil_madman Offline
motor_oil_madman  Offline

Joined: Nov 2009
Posts: 5,195
Houston, Texas
You just have to learn with time. Practice with knowing where neutral is on the sticks and that will help.


2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.

Re: How Fast to Run a ZeroTurn Mower [Re: Gebo] #4792882
06/21/18 07:39 AM
06/21/18 07:39 AM
Joined: Dec 2003
Posts: 10,023
Florida, Cape Coral
Eddie Offline
Eddie  Offline

Joined: Dec 2003
Posts: 10,023
Florida, Cape Coral
Max engine RPM is required for engine cooling according to my John Deere.


CX5 Touring 2.5L :-)
Re: How Fast to Run a ZeroTurn Mower [Re: Gebo] #4792884
06/21/18 07:44 AM
06/21/18 07:44 AM
Joined: Jan 2011
Posts: 1,078
Columbus Nebraska
old1 Offline
old1  Offline

Joined: Jan 2011
Posts: 1,078
Columbus Nebraska
As others have said, you control your ground speed with the transmission, not the engine rpm. Practice, practice, practice.


2017 Nissan Frontier 4.0 5w30
1965 Mustang 200 c/4 10w30 QS defy
1964 Ford Ranchero 302 c/4 15/40 Delo
1929 ford model A No filters, and 15/40 oil
Re: How Fast to Run a ZeroTurn Mower [Re: Gebo] #4792900
06/21/18 07:58 AM
06/21/18 07:58 AM
Joined: May 2018
Posts: 1,811
Tri State Conservative
Zee09 Offline
Zee09  Offline

Joined: May 2018
Posts: 1,811
Tri State Conservative
Most repeat full throttle as most ZT makers suggest that.
Mine says a minimum of 3000 rpm- I found about 3150 rpm the sweet spot for great cutting and maximum fuel efficiency.
That comes in handy when your lawn is literally a country mile.
I do have a built in tach and it makes it easy to remember your calculated "sweet spots" when you move over to other areas.


In the end you will know after you get used to it. Same with actual speed- your terrain dictates that.


"If I walked on water, they'd say I couldn't swim."
Re: How Fast to Run a ZeroTurn Mower [Re: Gebo] #4792939
06/21/18 08:27 AM
06/21/18 08:27 AM
Joined: Aug 2003
Posts: 11,152
Buffalo, NY
JTK Offline
JTK  Offline

Joined: Aug 2003
Posts: 11,152
Buffalo, NY
Gebo, when I had my Cub Z-Force ZTR, it felt the same way at full throttle. The drives put out max torque at max engine RPM, so ground speed and direction changes will be more herky-jerky unless you use a softer touch.

I get it that the manufacturers recommend full throttle for "proper engine cooling", but you don't need to run them at full throttle. You'll burn less fuel throttled down a bit and IMO, it's easier on the equipment and you throttled down some.

Last edited by JTK; 06/21/18 08:27 AM.

2017 Ram 1500 4x4, 3.6L. 2016 Nissan Quest SV (Babe magnet IV)
Re: How Fast to Run a ZeroTurn Mower [Re: Gebo] #4793009
06/21/18 09:36 AM
06/21/18 09:36 AM
Joined: Sep 2002
Posts: 2,540
VA
Gebo Offline OP
Gebo  Offline OP

Joined: Sep 2002
Posts: 2,540
VA
I'm leaning towards JTK. One thing I have noticed is that it still creeps forward in neutral with the bars laid out. I need to do a little research. IT's a Snapper/Simplicity from 2008 I purchased from my neighbor.

Since I'm running all Amsoil, that's all I need for cooling. wink


'98 LEX LS400 290K
'02 4Runner 230K
'05 Lex LS430 85K
'07 Lex GX470 65K
Amsoil in last two.
Schaeffer in the first two.

Re: How Fast to Run a ZeroTurn Mower [Re: Gebo] #4793048
06/21/18 10:05 AM
06/21/18 10:05 AM
Joined: May 2006
Posts: 4,065
Central Wisconsin
dwendt44 Offline
dwendt44  Offline

Joined: May 2006
Posts: 4,065
Central Wisconsin
Doesn't the cut look rather ragged when mowed at a
really fast pace? I usually mow at a moderate speed and the
'cut' looks pretty good after.


My 2


There's no such thing as:
Too big of a battery,
Too large of a gas tank,
or too loud of a horn,
or too bright headlights.
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