New 7610 - initial comments and questions

   / New 7610 - initial comments and questions #1  

Koz

Member
Joined
Mar 24, 2004
Messages
49
Location
Pittsburgh, PA
My new 7610 was delivered late last Wednesday. With rain and baseball games, I was not able to start playing with it till this weekend. With my 3.5 acres in danger of getting out of control and needing to be raked, I decided my first job would be to mow. Most of my comments are comparisons of the new 7610 with my old JD 445. Also, keep in mind that my comments are mostly all related to mowing, not loader use.


Turning radius - around 6' uncut circle. It does sound like much of a difference versus 4' (for the JD), but there is significantly more time spent backing up when trying to cut around my numerous trees. I had already increased the diameter of the mulch at the base of trees, I need to increase it further (more mulch also means more loader use!).

Cut quality - on par with the 445. My neighbor has a BX 2200 and mowed his lawn last weekend too. His grass is nicer (thicker and greener) and the 2200 left the grass looking more "perfect". The 7610 certainly was not bad, but the ground contact rollers compressed the ground enough that the overall effect was not the same. I mowed at around 2000 rpm (the manual says not to mow at 100% rated rpm till after 50 hours), and am hoping that suction and cut will improve at 2600 rpm.

Noises - more tranny whine than my old JD, and the deck is definitely much noisier due to the ground contact config versus the suspended JD. I got tired of hearing the discharge chute bounce up and down and put a bolt on it to keep it from moving. It still is a much noisier deck. But, with hearing protection on I cant tell!

1/4" valve - I noticed that the 1/4" valve does not seem to work correctly. When dropping the deck, it drops smoothly around 1/4" with each push of the handle. However, when pulling the handle back it does NOT rise smoothly consistently. It tends to rise at full speed, putting a shudder through the system. Happens most of the time, but not always. I'll be contacting the dealer about this.

Deck Hydraulics - Over a 5-min period with the engine running, the deck drops around 1/2" to 1". If the engine was off, I might be OK with this but with the engine on I think something is amiss. I will be contacting the dealer about this.

Steering - When under load (mowing and moving uphill), the steering is not smooth. It goes back-and-forth between being smooth and "stiff". This does NOT happen when mowing a level ground. I will be contacting the dealer about this.

Foldable ROPS - works great, but i've already whacked my shed door once! Hopefully, i'll start remembering to lower it before putting the tractor away.

Engine RPM - As stated earlier, the manual says to keep below 100% for the first 50 yours. Are you guys keeping it at 2000? lower?

attach/detach of loader - It looked straight forward when the dealer showed me on Wednesday. Sat AM, it took me a whole hour because i'm not familiar with any of the terminology in the manual. After reading the manual and thinking about it it is really simple and now takes only a couple minutes.

Thats all I can think of. Any comments about the hydraulics issues would be welcome.
 
   / New 7610 - initial comments and questions #2  
Koz

i have the same setup as you. i have yet to use my mowing deck since i still have mostly mud around my new house.

id be interested in hearing what your dealer says about the issues you brought up in a later post.

thx
John
 
   / New 7610 - initial comments and questions #3  
I put a rubber block under the discharge chute so it does not clank. Don't know about the 1/4 inch thing. The transmission will be noisy compared to the smaller JD445 lawnmower. The steering thing, hmmmm, my 2410 nor BX does anything like that. I do feel a pulse in both of them when I spin the wheels fast especially if I am working another hydrualic implement like the FEL. I think it is a "shock" wave that bounces through the system like steam pipes, needs an attenuator just like on home plumbing--have the same issue on hydro pumps on jet engines--causes a shudder in hydrualic actuated controls and they install a bulb shaped attenuator to absorb the wave. It is hardly perceptable and is of no consequence. Both tractors steer effortlessly with one finger and very smooth. Yeah, you going to have to change from trying to circle the trees to taking swipes at them and then turning back on another pass from a different direction or you soon will have ruts. Mulch out as far as possible will help, change your mowing pattern slightly each time or you will see a wear pattern develop--ask me how I know. In my opinion, these 2410/7500/7610 size tractors are the largest practical size for mowing and even that is a stretch if you are accustomed to the perfect lawn--I am not /forums/images/graemlins/tongue.gif.

Seems like the 7610 will soon surpass the 7500 as the second most popular tractor behind the BX /forums/images/graemlins/laugh.gif. J
 
   / New 7610 - initial comments and questions #4  
"Turning radius"

I find mine more than adequate - on the other hand, I don't have trees on my property. Believe me, I'll be laying out beds and walks with the radius in mind, though!

"Cut quality"

I'm curious as to what you're seeing. My cut quality doesn't look a lot different than my neighbors who both use Deere riders. It -should- given about 1300-1500 lbs. difference, but it just doesn't. Maybe it's mow height? I prefer to leave grass longer, at around 4". I am mowing at full PTO speed.

"Noises"

Yup - going out with plugs next time ...

"1/4" valve - I noticed that the 1/4" valve does not seem to work correctly"

I have the same problem.

"Engine RPM - As stated earlier, the manual says to keep below 100% for the first 50 yours. Are you guys keeping it at 2000? lower?"

No, I'm running it at PTO speed, but not for any length of time.

Bill
 
   / New 7610 - initial comments and questions #5  
I have a 7610 and use it for all kinds of stuff. I have noticed taht you have to circle the trees a little wider than the old sears riding mower but what the heck. I had to set my mower deck with the correct height before I could use it for the first time but for the 8 plus acres I have to cut around fruit trees and such the 60 inch deck is great. If I were you I would diffently get those hydraulics checked out. I have left mine up by accident and they didn't drop any even after a long time. I haven't noticed any loss in steering at all while cutting or using the loader. Of course, I am new to this FEL work and the only other loader/tractor I have used is my dad's JD, which is gear trans.

Donald B.
 
   / New 7610 - initial comments and questions #6  
second part.

My dealer along with several others said that I should very the RPM's every 10 or 15 minutes and that could be anywhere from 100 to 300 RPM change. He also said that I should cut in High/Low and even in 4WD along with 2WD so that it would help in the break in. I asked the same question about mine because I knew that I would be cutting a lot of grass and I was concerned about the RPM and break-in. And that is what I was told. And seeing after I bought my tractor I found out that I went to school with the headperson in the service department and he told me that it was rougher on them to NOT change the RPM then to change it just a little every 10 or 15 minutes.

1/4 inch valve ----

Not to sure if I am doing it right or not. It seems to work about half the time. I guess I will need to PRACTICE more. And that means more seat time.

Donald B.
 
   / New 7610 - initial comments and questions #7  
I have only had mine long enough to get 14 hours on the meter. I replaced a B6100 with a Woods 48" deck. I have found the cut to be better than I had. (Of course that setup wasn't know for cut quality either.) I have had some problems with the front tires cutting up the turf. It seems to be ok if I slow down and am careful, but sometimes I forget and it does leave a rut. The tractor turns so much better than my old B6100 I am thrilled with the turning. As for noise it is much quieter than my old B6100 so I am thrilled. I guess it is all about what you are replacing. My dealer told me not to worry about the break in. He said use it like you are going to be using it, just be sure to do the 50 hour service. I have probably used it a little harder than I should, but I have tried to mix it up on the RPM's and not run it too fast too long. All in all I love the tractor.
 
   / New 7610 - initial comments and questions #8  
Koz,

Congrats on the new rig!!! You'll get the bugs worked out (or get used to it /forums/images/graemlins/wink.gif ). They are having a TBN locals meeting in Grove City next Saturday. See related topics and TBN chapter meeting.
 
   / New 7610 - initial comments and questions #9  
My 7610 was deliverd Friday afternoon and it promtly rained. I did get three hours on though this weekend.

I haven't mowed with it yet but it is far more nimble than my JD 755. I will be using my woods 60" rfm and looking forward to seeing how it does.

I haven't really used the three point yet except for hauling around the BB for balast so I haven't played with 1/4'''' yet. Have bad fittings on the loader where the flexable lines meet the hard lines and am oozing hyd fluid. looks like either bad hoses from the factory or over torqued on set up. The dealer is picking it up tomorrow to fix that and my ROPS which the pivot bolt is so tight (probaly hammered on with an impact wrench) that I have to use all 260 of my lbs to fold it. Not very fun when you have to fold it to get it in the garage.

All in all except for some minor things above I am very please. Certainly can see a huge difference from my 17 yr old JD to this.

Keep us updated on what your dealer says about your issues

Kevin
 
   / New 7610 - initial comments and questions #10  
</font><font color="blue" class="small">( I have only had mine long enough to get 14 hours on the meter. I replaced a B6100 with a Woods 48" deck. I have found the cut to be better than I had. (Of course that setup wasn't know for cut quality either.) I have had some problems with the front tires cutting up the turf. It seems to be ok if I slow down and am careful, but sometimes I forget and it does leave a rut. The tractor turns so much better than my old B6100 I am thrilled with the turning. As for noise it is much quieter than my old B6100 so I am thrilled. I guess it is all about what you are replacing. My dealer told me not to worry about the break in. He said use it like you are going to be using it, just be sure to do the 50 hour service. I have probably used it a little harder than I should, but I have tried to mix it up on the RPM's and not run it too fast too long. All in all I love the tractor. )</font>

My 7610 replaces an old ('88?) 38" Sears rider - mowing what used to take 2 - 2 1/4 hrs in only 50 minutes is a treat all in itself. Mow quality I feel is equal to the rider.

While the 7610 turning radius most likely is larger than the old rider - the HST makes backing up a snap - MUCH faster & intuitive than the crappy / cranky 4-spd manual shifter on the rider. The "fingertip" power steering wins hands-down also. Speed control (slower through bumpier sections / faster through smooth or shorter growth) with the HST is also a no brainer - wasn't really practical with the rider.

I'm up to @ 35 hrs at all different engine speeds: @ idle (100 rpms) while loading trailer / cart with yard cleanup; @ 1800 - 2000 for FEL work / moving from site to site; and mowing @ 2200 - 2400 - so not quite PTO speed (only two mows so far - < 1 1/2 hr). Shift between 2WD & 4WD as well as Hi/Lo as the job demands.

The only "hard turning" I've experienced so far is when I had a *large* (ok - HUGE - 24-28 " diameter x 8' long) section of a pine tree that we felled chained to the FEL. I picked the whole thing up (barely) - no dragging - (and YES! the back wheels were pretty light /forums/images/graemlins/shocked.gif ) - and *creeped* with it @ 100 yds to dump in the woods. Once I bumped the rpms up from 1200 - 1500 up to @ 2000, the steering effort dropped noticably.

I do have to plan a bit ahead so as not to scuff the turf (R4) when turning sharply - basically just relaxing & let the tractor do the work. I check all the fluids before each workday - even clean the radiator screen. Like my cars - I don't push the engine until it's nicely warmed up - I usually wait to mow until the end of the day.

Ultimately, I think it'll probably turn out to be *just* a little too big once my landscaping activities are ultimately finished - but that's the trade off for being able to tackle just about anything around my property.

One last comment - fuel consumption. Given the much larger engine (24 hp vs 12 hp of the rider) - I expected much higher fuel consumption. Very pleased to say that this is not the case! My 7610 arrived with a full tank - and I've refilled my fuel cans twice (5 + 2 1/2 gal = 7.5 g) - so 15 gallons of *refill* and the @ 5.3 gal that she arrived with = @ 20 gallons that I've gone through - and she's got @ a 2/3 tank right now. Any way you slice it - not too bad at all! The fuel gauge does drop noticably when running the mower at PTO speeds - but the fuel gauge seems *stuck* when I'm doing mixed FEL work. /forums/images/graemlins/grin.gif

All in all - I am VERY happy with my 7610. Just have to figure out where my detent for the FEL *float* position got to... /forums/images/graemlins/grin.gif used to work - now its MIA...

Cheers,

Dan
 

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