How to Adjust Lawn Mower Deck Pitch | Gravely®

Are you paying attention to your lawn mower deck adjustments? Watch this video to learn why pitching a commercial zero turn lawn mower deck will lead to a better cut quality and how to complete the procedure yourself.

Before starting service, always park the unit on a flat, level surface, engage the parking brake, stop the engine, remove the key from the ignition and wait for all moving parts to stop and for hot parts to cool. Additionally, reread the safety information in the front of the operator's manual for your unit and to follow the procedural instructions in your operator's manual.

[pilotop]

Someone may know the exact pitch of the threaded adjustment bolts but I have found that one full turn changes blade height about 1/8". Mine was way off left-to-right from the dealer so I adjusted that prior to doing pitch adjustments. Also, because of the difficulty of taking these measurements on the floor (how most people would be doing it), I found that setting the cutting height up to about 4" so you have room to work under there is a good first step. And then I cut a piece of dowel rod "gauge" to fit between the floor and forward right cutting edge (the "measurement"). Everything else just needs adjusted relative to that "gauge" then, rather than trying to see all the actual measurements underneath there with a tape measure. Adjust the left front to fit this "gauge" and adjust the rears to be 1/4" or so higher than the dowel rod gauge.

[UnblockedOne]

Everyone check your deck height & pitch. I bought a HD 60 a year ago. Then, last week I also bought a HD 48. We were out mowing an open field & noticed we were cutting at different heights. I got out the measuring tape & find out my 60 HD was a whole half an inch short. & I've been mowing like this since last year. Also, my new 48 HD was perfect in the front, but the back of the deck was pitched about a quarter of an inch lower than the front. Maybe, explains all the stragglers it's been leaving. I'll be adjusting everything tomorrow.

[ron]

Thank you for your simple to follow instructions.

[ematos]

Why do these not come adjusted from the factory. I find it kind of ridiculous that I have to check/adjust my brand new pro turn 148 after spending this kind of money.

[dmb]

I spent an hour tweaking my deck to have about 1/4" lower front to rear difference and checked side to side height to be the same, my dealer had it adjusted close but then my ocd kicked in so I adjusted it.

[jonesey]

I followed the instructions for my gravely pro stance 32 and did this and now the deck will not hold itself at the top in the transport position. Any ideas why this is? I’m taking it to the dealer later for help but if anyone has an idea to fix this or a reference on how I’d sure appreciate it. Thanks

[mansourramzey]

I bought my 42 inch gravely riding lawn mower may of 2019 and i don't know if i should take it to them when annual service comes up or just ask them to do it now, please tell me which would you choose considering my situation that i can not do it correctly. Tks

[casmith]

My new 60” ZT HD is having problems with the deck clogging up even with cleaning every time and is leaving some streaks. Could deck pitch be the issue?

[winstonhall]

Could you use wooden blocks all cut to the same size and level it using the actual deck instead of the blades? That’s how i do it on my John Deere D130, was wondering if this method would work on my gravely pro turn zx also.

[JC-thrl]

I tried adjusting for hours and the best I could do in maintaining the side to side at 3-1/2” is 3-3/8” front and 3-5/8” rear. Is this an acceptable setup? Gives it about a 1/4” pitch. If not do you have any pointers?

[jameshoward]

Great video. Thanks for the lesson. One question, who manufactures your lift tables? Thanks for your time.

[Rocky-xxzg]

Does dropping the front tip of the blades 1/2 effect the Operator Gauge for setting the cutting depth?

[travisricks]

My new 2023 ZT HD 60 is cutting like crap!! Leaving a lot of uncut grass and stragglers in the middle of a single pass, causing me to have to double cut. This is unacceptable. It’s at the dealer now. I do love my Gravely though.

[timtremblay]

Logical and done right - thanks for the info

[lambfactory]

My Mach One blows grass and dirt out the front of the deck and all over the operator.
Maybe this adjustment is what is needed? My dealer thinks it is a mystery.

[dnetter]

Just a few simple tools, and a hydraulic lift... 😆

[kylejohnston]

Man, go back to chains and a floating deck. This is aggravating.

[have_bots]

I have a 2019 Gravely ProTurn 660 that gives THE WORST cuts in history! I should have known, I mean....I only paid $14, 000.00 for the thing, so its not like I should be expecting a quality cut. Having to mow areas 2 and 3 times to get a clean cut. Have adjusted the deck, replaced blades, cleaned underside of And for some reason, my dealer didn't sound surprised at all at my issues. NEVER again will I touch a gravely product!

[robertwilliams]

I have a 2020 32inch Gravely prostance
Stand and it doesn't cut low at all it has
been back to dealership 3 times to hear the deck is correct this mower was a
Waste of $8, 200 BUYER BEWARE
STAY AWAY FROM GRAVELY MOWERS!!!