Lawn Care Forum banner

John Deere Zero Turn: Z645, Z655, Z665 Review & Mowing Pics

1 reading
124K views 46 replies 12 participants last post by  GoldStarMowing  
#1 ·
John Deere Z645, Z655, Z665 Review:

A few months ago I purchased a new John Deere Z655 54” zero turn mower to use as a backup (0.3 hours on the clock). I was originally looking at purchasing a Z700 series but after discussing the cost and availability with 4-5 different Deere dealers I decided to look for something else. I noticed the Z600’s on the lot and was actually pretty impressed with them when I did a quick walk around. After a test drive I ended up taking one home.

My Z655 has just over 50 hours on the clock and I’ve really been impressed with it thus far. For a “residential” zero turn mower it’s a fairly heavy-duty machine and it does a fantastic job mowing even at top speed (9mph) which actually surprised me. I didn’t expect it to cut as well as it does.

Controls:

Like most zero turns the Z655 has the two control sticks. As far as I’m concerned they are infinitely adjustable, I don’t remember how many positions Deere says they have but regardless of how big or small you are you’re bound to find a position that fits you comfortably as an operator. The control levers have adjustable dampers and give a super smooth, yet firm and responsive feel, which I really like. The feel is essentially identical to the 900 series. The Z655 operator station is plain and simple, throttle and choke on the same lever, key, hour meter, PTO, and a blank switch for the optional headlight kit. There is a fairly large storage bin located behind the controls and the mower has two cup holders, all of which have small drain holes in the bottom.

Seat:

The seat gets a thumbs up as far as I’m concerned. Firm, yet plenty of give to help take the shock away from the operator when driving on rough ground. Plenty of travel to accommodate tall guys, like myself, or short operators. The increased seat back height (21”) gives great lower back support and helps to take away a lot of operator fatigue compared to some other mowers on the market. The seat also has a nice set of padded armrests, which are fully adjustable and can be flipped up out of the way if you prefer.

Mower deck:

The Z655 comes with a 54” High-Capacity mower deck. The deck is stamped from 9-gauge steel instead of the standard 10-gauge Deere usually stamps their residential decks from. The Z655 also has a piece of round bar welded around the front and side perimeter of the deck for collision protection.

As far as I can tell, and as told to me by my salesman, the Z655 deck comes off the same press as the 7-iorn commercials do. Comparing the profile of the 54” high capacity to the 7-iorn on the Z700 series it’s essentially identical, in fact the mulching kit used by the 7-iron 54” is compatible with the Z655 54” high cap, as are all the blades, and the deck spindles are the exact same.

The 54” high cap mowing characteristics are the exact same as that of the commercial 7-iron. It stripes the same, side discharges the same and has a great cut quality even in long grass at quicker speeds.

Servicing the deck is simple and quick, I’ve noticed I don’t get much build up under the deck regardless of mowing conditions and it stays rather clean. There are only two or three small spots that I have to scrap off. The plastic spindle covers come off with one screw so cleaning is easier and they don’t rattle around or make any noise (little things like that drive me crazy). The grease points are easily accessible, like they should be on all mowers.

Engine:

The Z655 comes with a 27hp John Deere Cyclonic engine built by Brigs. I wasn’t real crazy about getting a mower with a Brigs engine since I’ve always been a Kawi fan but so far nothing negative to report. The engine idles smooth all through the RPM range with no excessive vibration or noise. It comes equipped with an auxiliary oil cooler to help keep the fluids cooler prompting longer engine life. The 27hp has plenty of power to handle almost all mowing jobs, wet or dry, even with the heavy G6 gators I run. I have yet to bog the engine down even mowing half a foot tall grass. The hydro’s show no sign of power fade or make any added noise/vibration even after hours of running and they eat up hills no problem. Servicing the engine is fairly simple and there must have been a mechanic in the room when they were designing the engine since they added things like an extended oil drain hose. The air filter takes a quick turn of two screws to get to and all the fluid levels are easy to see/check at a quick glance. The oil filter is the only thing that takes a little work to get to. It’s located in a tight spot, but I can still reach my hand in and take it off.

Overall Quality:

Again, I’ve been really impressed with it especially considering it’s a “residential” mower. The build quality is a lot nicer and a lot “beefier” than some of the other residential units on the market. The frame is fairly stiff and has no noticeable flex even with one of the front casters off the ground. The mower has great hillside performance and the casters don’t steer you down the hill like they do on some zero turns.

For the people out there who mow 40 hours a week and log thousand of hours each year obviously this isn’t the machine for you. For the homeowner with less than 6 acres to mow or for the pro that just wants a reasonably priced backup mower to eliminate down time, give the Z600 series a look. I’m really glad I took a chance on this mower and it fits my needs perfectly.

Pros:

-Powerful
-Great cut/stripes
-Smooth to operate
-Simple to service/maintain
-Heavier build than most Residential units
-Deere’s dealer network/support
-4year/500hour warranty
-Quality machine

Cons:

-Dealers aren’t willing to negotiate price a whole lot.
-Combined throttle & choke lever. I don’t know why they were combined into one, but they should really be separate controls.
-Had to take it back to the dealer shortly after purchase to have the choke adjusted. It was taking a good 5-8 seconds of straight cranking to get the engine to turn over on a cold start. After being fixed it starts after ½ - 1 second of cranking on a cold start now.
-No on-board diagnostics.

I’ll continue to add to this thread as I put more hours on the mower and I’ll advise on any problems/issues I have with it.

Here are some mowing pics, no striping kit: 3.25-3.5"

I mow both the properties pictured here. Customer photo.
Image


Image


Image


Image


Image


*Note: All pictures and images are the sol property of Gold Star Mowing and it's clients.*
 
#3 ·
I'd say that looks fine. I've been a fan of the 54” High-Capacity mower deck for a while. Was going to buy a 445 with the 54” High-Capacity mower deck. Nice work.

:drinkup:
Thanks, appreciate the compliments. After taking it easy for the first 10 hours or so I decided to use it as my primary mower for two weeks to really put it through it's paces and it handled everything I threw at it. The "high-cap" deck is fantastic, as far as i can tell the only difference between it and the 7-iron is a few millimeters of steel.
 
#4 ·
Nice write up, thanks for taking the time to share your experience with your new mower to the homeowner group. My question, is the 600 series a new series? Maybe you said it and I missed it. Certainly a beefier machine over the 2 and 4 series. Seems priced very well at that and lays a nice stripe. Certainly another machine for the homeowner mowing a few acres.
 
#5 ·
Nice write up, thanks for taking the time to share your experience with your new mower to the homeowner group. My question, is the 600 series a new series? Maybe you said it and I missed it. Certainly a beefier machine over the 2 and 4 series. Seems priced very well at that and lays a nice stripe. Certainly another machine for the homeowner mowing a few acres.
More than happy too and thanks for the compliments. I believe the 600 series was brand new to the market in late 2010 possibly early 2011 but ill have to double check. Maybe someone else on here might know. It's a great machine for what it's built and designed for, hard to beat in the homeowner arena. The dealer actually said they have a couple guys using it commercially. I personally wouldn't use it as a full blown, thousands of hours a year, commercial mower but it's nice to have a backup, without the 900 series price tag.
 
#9 ·
Well after I looked at the 2 mowers this afternoon I think I am going to go with the 915B. I have one yard that is 5 acres and 1 is 3. I am very grateful for your post. Very good info.
If you have one that is five and one that is three acres the 900 series would be a safer bet. The 900 series is built like a tank and will definitely serve you longer than a 600 series model would. (Not to say the 600 series isn't built well, but it isn't built the same as a 900) As my original post says I had no problem using the 665 for two weeks straight mowing my accounts (2-3 acres) but it's not a 1000 hour per year mower. Good luck with the decision!
Posted via Mobile Device
 
#10 ·
This is a great thread thank you. I am considering a 645 to mow my 1.5 acres at my house. When I went to my dealer they didn't have a good opinion of this series and tried to push me to an x series tractor. They claimed these are a small step above a box store unit. I found this response very odd. My yard is pretty bumpy so I am concerned how this will ride with my bad back. Also, do you know if you can pull a yard cart, spreader, aerator, etc with this?

Thank you for your help!
 
#11 ·
This is a great thread thank you. I am considering a 645 to mow my 1.5 acres at my house. When I went to my dealer they didn't have a good opinion of this series and tried to push me to an x series tractor. They claimed these are a small step above a box store unit. I found this response very odd. My yard is pretty bumpy so I am concerned how this will ride with my bad back. Also, do you know if you can pull a yard cart, spreader, aerator, etc with this?

Thank you for your help!
The 600 series is far above a "big box store" machine. The wheel motors, pumps/ transmission are commercial grade while the mower deck has the exact same spindles and bearing assembly as the commercial 900 series. The deck on the 600 series is made of thicker steel than what's on the x series tractors as well. The 600 series deck will stripe better than x-series tractors too since the deck design allows it to move more air.

Some people just don't like zero turn mowers which might be why your dealer tried to push you to a tractor. It is also possible that the dealer has a higher profit margin with the x series tractors thus they want to sell you what they can make more money off of.

Attachments for the 600 series ztrak are limited but with the optional $50 hitch attachment you can still bag clippings, pull a spin spreader, cart, or sprayer. An aerator might be to heavy to pull, not because the tractor isn't powerful enough (it has plenty of power) but due to the tractors weight distribution. In order for a zero turn mower to be stable on hills the majority of the weight must be shifted toward the rear of the mower. The downside to that is you can't pull a lot of weight without adding more front weight to prevent the mower from flipping backwards. (John Deere sells a front weight kit for the 600 line).
Posted via Mobile Device
 
#12 ·
This is a great thread thank you. I am considering a 645 to mow my 1.5 acres at my house. When I went to my dealer they didn't have a good opinion of this series and tried to push me to an x series tractor. They claimed these are a small step above a box store unit. I found this response very odd. My yard is pretty bumpy so I am concerned how this will ride with my bad back. Also, do you know if you can pull a yard cart, spreader, aerator, etc with this?

Thank you for your help!
(Forgot to add to the above post)
In response to the question about ride, I think it'll ride about the same as a tractor. The ride might be slightly more bumpy than a tractor but not much different. The seat soaks up bumps pretty well and the super high back with arm rests are a nice touch.
Posted via Mobile Device
 
#13 ·
The 600 series is far above a "big box store" machine. The wheel motors, pumps/ transmission are commercial grade while the mower deck has the exact same spindles and bearing assembly as the commercial 900 series. The deck on the 600 series is made of thicker steel than what's on the x series tractors as well. The 600 series deck will stripe better than x-series tractors too since the deck design allows it to move more air.

Some people just don't like zero turn mowers which might be why your dealer tried to push you to a tractor. It is also possible that the dealer has a higher profit margin with the x series tractors thus they want to sell you what they can make more money off of.

Attachments for the 600 series ztrak are limited but with the optional $50 hitch attachment you can still bag clippings, pull a spin spreader, cart, or sprayer. An aerator might be to heavy to pull, not because the tractor isn't powerful enough (it has plenty of power) but due to the tractors weight distribution. In order for a zero turn mower to be stable on hills the majority of the weight must be shifted toward the rear of the mower. The downside to that is you can't pull a lot of weight without adding more front weight to prevent the mower from flipping backwards. (John Deere sells a front weight kit for the 600 line).
Posted via Mobile Device
Thank you so much for this additional information. The dealer immediately pushed me to an x series lawn tractor or all the way to a 930m commercial unit, which I couldn't see spending 9k for to do my 1.5 acre lot. I understand the weight distribution after you explained it, makes perfect sense. I can't imagins I would be pulling anything more than 200-300lbs.

I knew it seemed weird that he wrote these off so quickly as big box equivelent. It also seemed he wasn't a fan of the Briggs engines
 
#14 ·
Thank you so much for this additional information. The dealer immediately pushed me to an x series lawn tractor or all the way to a 930m commercial unit, which I couldn't see spending 9k for to do my 1.5 acre lot. I understand the weight distribution after you explained it, makes perfect sense. I can't imagins I would be pulling anything more than 200-300lbs.

I knew it seemed weird that he wrote these off so quickly as big box equivelent. It also seemed he wasn't a fan of the Briggs engines
I have never been a big fan of Briggs motors either but so far so good on mine. The 4 year 500 hour warranty made me feel better about getting one.
Posted via Mobile Device
 
#16 ·
Thanks - I agree on the warranty. I am also going to look at a scag freedom z as a point of comparison. Any thoughts?
I know scag makes good products from what I've heard on here. Ill admit I've never given any other brand much thought though. I really like my John Deere dealer and they've earned my business time and time again. The mowers have always been great too. Not to mention, there are 4 Deere dealers within 30 minutes of my house so parts are never far away and next day guaranteed delivery on parts is great for avoiding down time. No matter what you buy sooner or later it's going to break, belts blow, tires go flat, etc having good people there is important.

I would honestly tell you to buy from the dealer or manufacturer that gives you better service, you obviously have to take the sales staff with a grain of salt though. The experience after the initial sale can be just as important as the machine itself.
Posted via Mobile Device
 
#17 ·
Just a quick "long term" update on the Z655:

Mower is still running great with just normal maintenance. 400 hours on the clock as of right now. It did throw a mower deck drive belt around 350 hours but I guess that can be chalked up to normal wear and tear. Mower still gets a thumbs up!
 
#19 ·
As promised, here is another update on the Z655.

It has 534hrs on the clock right now and still running and looking great.

In addition to normal maintenance, I've replaced the hydro drive belt and the hydro reservoir tank itself. I had to adjust the engine choke at the beginning of this season as well, but that's it.

As for the hydro tank, after a day of running almost a full 8 hours in 90 degree+ mid August temps, the side of the hydro reservoir tank (plastic) bowed out a little bit. Nothing major but I'm slightly OCD and stay on top of things like that. Equipment is expensive so I take care of it.

I picked up the 54" 7-iron mulching kit last season and the Z655 handles it great as long as conditions are favorable running the John Deere blades that came in the kit. I run the mulching kit as the weather dies out and the growth rate slows moving into the summer season. I don't bother running it in the spring when the grass is growing like crazy. The G6 gator blades and double cutting where necessary does a better job and is all around more efficient in those conditions.The tractor still stripes well with the mulching kit but overall travel speed is reduced slightly over standard side discharging. Install is fairly simple (3 bolts).

I'm still really happy with this tractor and it has proven to be a solid and reliable performer. My one criticism that has developed over the last 500 hours is the reverse travel speed. It would be nice if it was slightly faster in reverse but that's a very minimal critique. I'd still buy this machine again.
 
#21 · (Edited)
Lol! They market it as the "high capacity" series but not calling it the "9-iron" does seem like a bit of a missed opportunity.

One additional thing I forgot to mention was I added a set of Rigid Indistries HD D-series diffused Dually LED lights to the mower for late fall afternoon mowings when it gets dark around 4pm here. I made my own light kit versus buying the John Deere one. Much happier with the Rigid lights than I've ever been with an OE lawn mower lighting kit and wasn't impressed with the lighting options Deere had for this mower. Thus, the Rigid products won out and having run them on personal vehicles in the past and currently, they've always proved to be a great product. The light output for a mower is comically bright. Ha!
 
#22 ·
You might post this thread over to the Pro forum (Lawn Mow Eq.) since it can work as a back-up to a commercial machine. May help someone out!
I'm not sure if it's legal to x-post like that?

I've got a 2014 665 that is I think the first with integrated TT hydros.

I installed a seat-suspension kit with a couple adapter plates.
I should post some pics. of that.

Was also thinkin' of pilin' on to your thread with my pros & cons.

Have you seen any reviews of the new Accel deck.
It's gotta pack up less than the Edge deck!
 
#23 ·
I did post one over there if I remember correctly.

I'd be interest to hear the pros/cons of the newer models with the kawi engine and different hydro setup. Mine has the 27hp cyclonic briggs w/ the Parker wheel motors and Kanzaki pump hydro setup.

Interested in your suspension seat setup as well.

I had an old LX280 with the 48" edge deck. It cut better than my neighbors craftsman but trying to mulch with it was a real chore. I'd hope the new decks do a little better. Having used the 7-iron pro and HC decks I don't think I could ever go back to a "residential" deck.
 
#25 ·
GoldStar,
I'll put a reply together & post it later.

Largebore,
If my budget was about $6.5K & reading this thread, I would sure consider it.

I'd like to own a 900 series someday just for the experience, but for various reasons, I don't want the extra weight.
I do about eight acres per week. If I was a daily driver I'd get the 900 series.
 
#26 ·
GoldStar,

I'm fine with the Kaw. FS730V engine. I've had no trouble with it & sometimes it even cold-starts with no choke.

The Tuff Torq TZT7-M hydros have been good. They're quiet & I can do wheelies if needed! They're sealed (with an expansion tank), but I don't really care. :)

The seat is very comfortable!

The main thing I don't like is the single, small (3.5 gal) fuel tank mounted over one drive-wheel. If the tank's full, I always try to keep it on the high-side of a steep bank.

The 600 series was discontinued in 2015.
http://www.deere.com/en_US/products...S/products/equipment/riding_mowers/zero_turn_mowers/z600_series/z665/z665.page?

The 540R is the new series to replace the 600s.
Best thing I see so far is the fuel tank is now under the seat & the fill-opening is designed to send any spill out the side & onto your shoes, not into the machine, storage areas, etc.
http://www.deere.com/en_US/products...s/equipment/riding_mowers/zero_turn_mowers/residential_ztrak_mowers/z540r.page?

I can see some mechanical & cosmetic changes but I need to compare the two a bit more. The new model is about 30 lbs. lighter. I'm not yet sure why.

I see some misprints in a couple pages of the website but not sure if it has anything to do with the weight differences.

Here's a couple pics. of my seat-suspension install:
Image


Image


Sets you up pretty high but you get used to it. I need to fab. some extensions for the control sticks.