John Deere ztrack 830a impossible problem to pin point here!!! Please help
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Nwatson99
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Well anyway what is new, did you get some new units yet?
Nope the proposal as been submitted though. They are talking end if September lol. Um after that problem got fixed a had a low oil pressure light kept mowing no issues after 20 hours till I changed the oil filter and that light went out even though john deere told me if the filtered clogged the machine would bypass the filter I guess that was not true. Today I filled up the mower with gas and oil got 3 hours on the machine and the low oil light comes on I check the oil and there was not a single drop on the stick, we will see if we make it to September lol
Nwatson99
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That much oil burning and leaking you might make it to Sept if you keep cases of oil on the truck and add some every 2 hours then.
Well I work for a state museum so I get to drive the mower to where ever I am mowing. I did determined the main seal and the manical govenenor off the crankshaft are my leaks, overnight I lose .15 a quart maybe running I have no idea. But running it's burning so bad the smoke from exhaust is blue and under load of mowing and doing turns and starting off kinda hard makes big clouds of smoke or if you just let the machine just sit running it would smoke out a 1000 square foot shop in just a few minutes
Hi!
Deamer1 here.
I was reading about your situation with the JD mower. Some of your earliest comments was about the unit back firing.
That is caused by a gasoline engine running LEAN.
I've experienced this several times in my career working in the State Parks System with various brands of mowers.
The fuel source (tank) is always suspect as would be fuel filter, fuel lines, fuel pump or anything connected with supplying fuel to the engine.
Another item which can cause this very problem is a sticking carburetor plate. Many of these mowers (Various Brands) use a Japanese and/or South Korean carburetor which is not adjustable.
What happens is the carb plates stick (not fully functioning) and thus the back firing. The last time I experienced this back firing situation was on a SCAG Mower. We cleaned out the fuel tank, changed the filter, checked the fuel pump output, and blew out the fuel lines. Then we put a squirt of KRoil penetrating oil on the end of the throttle plates shaft and BINGO the problem was cured! We discovered the plates and most of the carb was aluminium, but the shaft the plates ride on is steel or some metal which will rust. This rust builds up and binds the plates from full functioning operation and will stick at times, thus causing the LEAN operation. During our preventative maintenance and regular maintenance program we have added a squirt of penetrating oil on this shaft location. It makes a difference. Sometimes we run a can of fuel injector cleaner through the mower via the gas tank. It seems like it may help somewhat also.
The main problem is that the carburetor is not adjustable, so rather than purchase new carbs we deal with it during maintenance.
A good thing to remember: Backfires are caused by a gas engine running lean....follow the fuel flow to remedy this.
I'm not addressing all the other situations you have with the mower. They could better be addressed with a larger budget or better state contracts with the various dealers/manufacturers.
Hope this helps someone now or in the future.
Enjoy your week.
Deamer1
Deamer1 here.
I was reading about your situation with the JD mower. Some of your earliest comments was about the unit back firing.
That is caused by a gasoline engine running LEAN.
I've experienced this several times in my career working in the State Parks System with various brands of mowers.
The fuel source (tank) is always suspect as would be fuel filter, fuel lines, fuel pump or anything connected with supplying fuel to the engine.
Another item which can cause this very problem is a sticking carburetor plate. Many of these mowers (Various Brands) use a Japanese and/or South Korean carburetor which is not adjustable.
What happens is the carb plates stick (not fully functioning) and thus the back firing. The last time I experienced this back firing situation was on a SCAG Mower. We cleaned out the fuel tank, changed the filter, checked the fuel pump output, and blew out the fuel lines. Then we put a squirt of KRoil penetrating oil on the end of the throttle plates shaft and BINGO the problem was cured! We discovered the plates and most of the carb was aluminium, but the shaft the plates ride on is steel or some metal which will rust. This rust builds up and binds the plates from full functioning operation and will stick at times, thus causing the LEAN operation. During our preventative maintenance and regular maintenance program we have added a squirt of penetrating oil on this shaft location. It makes a difference. Sometimes we run a can of fuel injector cleaner through the mower via the gas tank. It seems like it may help somewhat also.
The main problem is that the carburetor is not adjustable, so rather than purchase new carbs we deal with it during maintenance.
A good thing to remember: Backfires are caused by a gas engine running lean....follow the fuel flow to remedy this.
I'm not addressing all the other situations you have with the mower. They could better be addressed with a larger budget or better state contracts with the various dealers/manufacturers.
Hope this helps someone now or in the future.
Enjoy your week.
Deamer1
Nwatson99
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WOW that is a coin toss then if it will make it, do you have someone who could rebuild that engine on your off days so you are not without a machine? Is the other machine same or worse?