Ok sorry guys but i dont know where to post this not really any John Deere forums.


does any anybody know anything about the fuel pump on the 495 diesel engine ( I know that it can be turned up but i cant figure out how)


Any help is wanted


Im only 18yrs old so I am very curious and i met start messing with things i shouldnt on the mower


Thanks


Edited by: Wolford

I have a 455, but never really looked at turning it up. Makes pretty darn good power as is, and smokes pretty good if you start to ride it down.





Someone was saying there was a twin turbo'd Deere at Muncie??? May have been pulling my leg...

There's a mid-sized lawn + garden tractor, I can't remember the model number, that's built like a pro-stock pulling tractor. Back wheels maybe 36" diameter. I didn't see it but my friends said it was unbelievable.....it was a turbodiesel and blew smoke just like its big brothers. I'll see if I can find some info.

I've got a 425. It's got a V twin 20Hp Kawasaki. Do you think it would take kindly to the bottle? if so how big of a jet should I start out with? http://www.dieselplace.com/forum/smileys/Clown.gif Aren't we taking this Tim Allen thing a bit too far?

Well from the other farm tractors that I have messed with, is when you find the injector pump usally on the side there will be a cover held on by 4 bolts and there is a twisted wire that runs across. You remove that cover, dealer will know if you have so it may cause problems with the dealer?? Under that cover there is normally a bolt with a jam nut and the end usally has a slot in it and you loosen the jam bolt and you and turn it up with a screw driver then lock the jam bolt. At least on the older Case and Massey tractors I have messed around with.


Jon

big_jon00


Great that is what I thought I'm going to try it right now





a64pilot It does need more power it has a power flow and bagger on it and it gets stopped up to easily. This is how I pay for my truck (dad doesn't pay for my stuff I do) so the faster I mow the more profit I make

Wolford,


Be careful, make sure you are not just turning up the govenor. If you do it'll just run at a higher RPM, but not make any more power. Don't know what a powerflow and bagger is. I pull something that is called a cyclone rake and it tended to clog because the airflow wasn't high enough and cutting the discharge chute to allow more air greatly helped the clogging. I was young once too, I made my after school money by cutting firewood so I understand. I learned the hard way that if you leaned out the high speed jet on a Poulan 361 bow saw it cut faster all of the way up until it seized http://www.dieselplace.com/forum/smileys/Cry.gif. Then I got to pay for a new saw as well as the new tranny for My Roadrunner.

A power flow is a turbine that is driven via belt off of the mower deck on the chute side and the clippings are sucked through it and up a chute and then into two bags on the back of the tractor. If u are cutting anymore than a 1/2" of grass it gets clogged in the chute or the intake of the powerflow.


So i think that adding some more power and making a bigger pulley(to spin the turbine faster) will help it not clog up in there


It is a diesel so leaning it out shouldnt be a factor. Right??


the four bolt cover was a no go there was a diaphram under the cover.

Plugging the Powerflo has nothing to do with engine power, rather vloume of the tube and amount and moisture content of your grass.





Unless you labor the engine (mine has never come close with the mower deck) you won't gain anything. You could try to pulley the Powerflow up a bit to keep up with the discharge of the deck.





Mine only labors with the tiller (50%) or the blower (47") but the mower is no challenge except at PTO engage with the Powerflow. You basically need to slow down your ground speed to let the mower keep up with the grass volume...

Wolford,


Don't let me offend you. I didn't mean that you would over lean the engine. I meant to warn you that sometimes increasing power can come at a big cost. You play, You pay. Those of us that are increasing the power output of these trucks are not doing so because the truck won't handle the load. If that were the case then we would be blowing these trucks up right and left. The Dmax would not stand the thermal stresses of extended pulls with the fuel turned up much at all. Semi's are built the way they are built because that is the only way they can pull that much weight reliabley. Yes a hot rodded Dmax can make as much or more power as a Semi motor, but it couldn't do it but for short bursts. Maybe if you increase the power of that little JD motor by much and use it, it might exceed design limitations; "BOOM". Paying for one mistake could take far more time than you gained by going faster. Look hard at John's advice and simply slow your ground speed down a little, it may save you a bundle in the long run. I'm not trying to preach, just someone that's been there, done that,got the T-shirt etc.


Re-read your post. My Cyclone rake was clogging easily as well. Cutting a half moon shape in the bottom of the mower deck adapter to allow more air into the chute "as per the manufactures suggestion" solved my problem. I could have turned up the RPM of the blower motor, but as it was a restriction on the suck side of the blower it wouldn't have helped. Call whoever makes your product maybe your not the first to have such a problem and maybe they have an easy fix as Cyclone rake did for me.Edited by: a64pilot

Wolford,

Here is a little advice. It may be harsh, but take it, its free.

1) Don't mess with the Yanmar.
2) If your in the "biz", get commercial equipment.

I started mowing for profit 25 years ago with garden tractors. It took me a while to realize that there are mowing specific machines out there that can at least double your efficiency if not even quadruple your efficiency! And most likely they'll cost less than that $14K+ tractor that you have now.


Back in the 90's I ran a JD F-935 with the 22hp Yanmar diesel. It WAS underpowered in thick turf, and never quite impressed me with its quality of cut. I learned that after time, the pump wasn't getting WOT. I moved the throttle to max., then popped the hood. I grabbed the throttle arm and got another few hundred RPM's out of it. After re-adjusting the throttle cable to compensate for this, it mowed consideralby better.

RPM's mean a LOT in a lawnmower. The more RPM's the higher the Blade Tip Speed. The higher the BTS, the better the lift. The better the lift, the better the cut... etc, etc. I won't even get into the power increase you may or may not obtain from this.

Finally, but most importantly, make sure your blades are SHARP and BALANCED. Dull blades will directly relate to your Power-Flow clogging. Also,...Why are you bagging? I haven't bagged a lawn for over 20 years. But if you NEED to bag for whatever reason, make sure that your tube is CLEAN and not nicked up from debris. Also make sure your bags are clean and your bagger screen (under hopper) is clear. You need a LOT of air-flow OUT, as your putting a LOT of air IN!

Also, make sure your deck pitch is set correctly.

First, inflate tires properly.

Pull into a flat/smooth garage.

You should have a 1/4" positive deck pitch. With blades like this | | | measure from floor to blade tip. Front should be 1/4" lower than rear.

Good Luck.

Lawnboy


What do you think of the honda powered Yazoo/Kees 25 hp 61 inch cut.


Genohttp://www.dieselplace.com/forum/smileys/Hug.gif

Geno,

The Kees line has some nice features. They are also made in Beatrice Nebraska with my eXmarks. If I'm not mistaken they are owned by Electrolux.

I wasn't aware of a Honda 25hp engine. Is it new? I know Honda has a 24hp, and for all intents and purposes, its gutless. For a homeowner, it'll probably be fine, but the old 20hp Kohlers had them beat torque wise. I'd go with a 27 Kohler or a 25 Kawi before getting That Honda. Honda has the small (3-13hp) market figured out, but their larger engines just don't compare to others.

Lawnboy,


No offense taken


But around here all of the big guys use the JD 495 because it is the best bang for the buck.


I also have two Z-traks these are the sh*t but thanks for the help guys.

Go to http://www.tractorbynet.com/ Pick the approriate forum and ask your questions there. I have no idea the quality of the reply you'll get, but it is definite more oriented to both larger tractors and also lawn tractors.