X730 Fuel consumption?

[beenthere]

I have the 455 diesel and don't smell anything but for a brief time on start-up. Having the better fuel efficiency and more power, plus the quieter 3 cyl over the 2-cyl is a real bonus, IMO.

 

[Deadman]

My X734 sucks fuel like crazy. I just moved for 2.9 hrs and it took 6 gallons of fuel. At 1.8 hrs, the low fuel light was flashing.

 

[beenthere]

Deadman
I have the x485, and find the same thing.. goes through gas quickly. The 455 diesel does most of the mowing. It goes hours on 5 gal of diesel. Guestimate would be twice as long but do not have real figures to back it up.

 

[IH3444]

The X750, 60HC deck can use off road diesel, so at approximately 3/4 gallon an hour mowing WOT, times 70 cents a gallon saving with off road diesel, it can begin to add up over time. That 3 cylinder 993cc Yanmar can mow some grass per hour. Never, and I mean never boggs down. Full synthetic lube, and sharp blades.....mowing machine.

 

[DJGTWO]

I find that my X739 will burn just under 5 gallons during a 4.5 hour cut. Our property is up and down hills, so the tractor is always working. I did have a Toro Zero Turn Diesel before the X739, and it did use half the fuel. But, on the hills and slopes, it was hard to maintain control.

 

[dstig1]

I have a new X738 gas with about 4 hrs on it now. Yes it sucks gas! And how! I have very steep hills, so I get the fuel warning light flashing before i am done with our ~1ac worth of lawn if i am on a slope, within 1.25-1.5 hrs. I tried an X590 first and it just didn't have enough traction, even with the diff lock for my slopes. I still need the diff lock in a few spots even with 4wd on the the X738 now. I have a lot of wasted time with tight turns and having to back up and realign the mower a lot, so that may be part of it. I have to say I was amazed at how much gas it uses. but at least i can finally mow this place without killing myself. I used to do it with a push mower for a few years...

 

[IH3444]

I still have the John Deere built Scotts 2554, and it in itself is a great mowing machine based on the JD GT 275 frame, with the down graded Tufftorq K66 from the JD Gt275 K70 hydrostatic transmission, but with a twin cylinder engine, along with the 54" JD stamped steel 11 gauge deck. It has the Kohler Command 25hp twin cylinder engine, yes it also came with the delayed leaking cylinder head gasket problem, which I fixed with the upgrade kits. It burned about almost a gallon an hour. I would run high test gasoline 93 octane in it due to the high compression it has. I think it's 9.5 to 1. I tried to used regular, and then also the mid range gasoline, but it would sometimes "diesel" on shut down. I was concerned that it may be damaging the engine during running and I can't hear it due to the noise. An air cooled engine is noisier that your Kawasaki water cooled, EFI 27hp engine. The water jackets help dampen the noise, as well as provide a cooler and more even cylinder head temperature envoirnment where preignition occur. I also wear hearing protection, as well as a quality dusk mask when mowing. It looks as tho the Kohler 25hp engine, and the Kawasaki 27hp engine use about the same amount of fuel. I do use the Mobil 1 15w-50 engine oil in the Kohler for added protection. The M1 15w-50 has the added zinc for camshaft to lifter protection, and the full synthetic flows as well as a 10w-30 on start up. Remember flow, and pump temperatures are different. Pump oil is about 20 degrees higher that flow. You kinda get the double whammy with gas mowers, you pay road tax, don't get the off road fuel break, and have a bit less torque. There is more advantage to a 3 cylinder diesel 120 degree power stroke delivery, verse the twin cylinder 90 degree power stroke delivery. Don't think I don't like my twin cylinder Scotts 2554, it was a vast improvement over the older 15hp single I mowed with for years. People have commented on how sharp the X750 turns when they have driven it. I have never driven the all wheel steer JD units, so my experience with those are nil.

 

[coobie]

Another reason I opted for the Diesel X740.