425 again…movement problems…

   / 425 again…movement problems… #11  
FWIW: The throttle cable handle has a friction plate with an adjustment in it on mine. (Under the dash)

All the best, Peter
 
   / 425 again…movement problems…
  • Thread Starter
#12  
FWIW: The throttle cable handle has a friction plate with an adjustment in it on mine. (Under the dash)

All the best, Peter
Ah! I might have seen that once before but it was long time ago and so many things today cloud my feeble brain…😊
 
   / 425 again…movement problems… #13  
Ah! I might have seen that once before but it was long time ago and so many things today cloud my feeble brain…😊
Believe me, I know the feeling.
61O24W8AT3L._AC_.jpg


We have club mugs available on Amazon and other fine retailers.😆
 
   / 425 again…movement problems… #14  
The throttles appear to be on the inexpensive side. I have to do mine also and have put it off cause it still works most of the time. I don't like to run at full throttle, and the throttle holds better at midrange RPM unless I hit with hand as I steer.
I was wondering if you could sneak a wrench through the slot and tighten a nut at the pivot??
I should get serious and at least look at that, but its COLD.

Any chance you have a noncontact thermometer? They used to sell for close to $20 at Harbor Freight. It may help you to check the temps of each wheel motor and compare to each other. Looking for a hot(ter) one that indicates bypassing oil.
 
   / 425 again…movement problems…
  • Thread Starter
#15  
The throttles appear to be on the inexpensive side. I have to do mine also and have put it off cause it still works most of the time. I don't like to run at full throttle, and the throttle holds better at midrange RPM unless I hit with hand as I steer.
I was wondering if you could sneak a wrench through the slot and tighten a nut at the pivot??
I should get serious and at least look at that, but its COLD.

Any chance you have a noncontact thermometer? They used to sell for close to $20 at Harbor Freight. It may help you to check the temps of each wheel motor and compare to each other. Looking for a hot(ter) one that indicates bypassing oil.
“…sneaking a wrench…” now that, I’m not sure of. My first thought is probably not from what I remember last time I had that top tunnel/mount plate off…I’m thinking awfully tight space but could be wrong. I think I’d rather just go ahead and pull it off and have another closer look—the choke handle keeps sticking after a while of sitting so I’m sure it needs attention as well. And yes, it’s COLD…too danged cold LOL. I don’t do bad with it when I finally decide I have to go out in it and shovel snow or the like. Then, I get heated up and have to start peeling clothes. 🤪
AND…how about this for luck—I just today received a laser thermometer from UPS! 😆 I’ll give that a try soon. AFTER it gets less COLD. 😂
 
   / 425 again…movement problems… #16  
As @m5040 mentions, with a thin wrench I can do it on mine from the top, but I have always done it by reaching up from underneath, and looking through the slot. It may take some fiddling because if you get it too tight, moving the throttle is a wrestling match. Not hard, just fiddly. I like to clean, grease, and then adjust, as the slot is an invitation for dust and debris to settle into the sliding mechanism, and in my experience, it is always filthy.

All the best,

Peter
 
   / 425 again…movement problems…
  • Thread Starter
#17  
Dang!…had to fire it up last two days to clear off snow…Brrrrrr COLD! I’m OVER this snow crap 🤪 So I just had to contend with constantly pushing up the throttle to get done and get back to WARM and thaw out my frozen toes🥶 Maybe we’ll get a warm spell and I can dig into this again.
Again, very sluggish moving but I believe it’s more in reverse along with the noise.
That swivel joint on top of the pump area—it seems to me to be good, in that from its center resting position if slightly pushed one way or the other it starts to have effect…in other words don’t appear to have any slop there. Could it be that over time the whole system from pedals up could be out of alignment? As in right or forward pedal has more travel result than the left reverse pedal? Plus, I’m starting to think the noise (loud, shrill rubbing/grinding, constant and more intense the more the pedal is pushed) when reversing might be coming from the pump area. Doesn’t do it when I had it jacked up all around but when I’m in the seat and moving it, I hear it—just can’t get my ears that far back there when I’m operating 😜
 
   / 425 again…movement problems… #18  
Just and FYI, if the engine RPMs are too low for the driveline load, they all make a hydraulic wine noise from the pump that gets louder the more you push the treadle pedal down.
 
   / 425 again…movement problems…
  • Thread Starter
#19  
Just and FYI, if the engine RPMs are too low for the driveline load, they all make a hydraulic wine noise from the pump that gets louder the more you push the treadle pedal down.
Hmmmm…interesting. Best I can recall I don’t think I’ve had many occasions of running it at low rpms—it’s usually cranked up…at least all the times I’ve heard it so far. I’m gonna try in the next few days to get some video of it when it’s happening.
 
   / 425 again…movement problems… #20  
Dang!…had to fire it up last two days to clear off snow…Brrrrrr COLD! I’m OVER this snow crap 🤪 So I just had to contend with constantly pushing up the throttle to get done and get back to WARM and thaw out my frozen toes🥶 Maybe we’ll get a warm spell and I can dig into this again.
Again, very sluggish moving but I believe it’s more in reverse along with the noise.
That swivel joint on top of the pump area—it seems to me to be good, in that from its center resting position if slightly pushed one way or the other it starts to have effect…in other words don’t appear to have any slop there. Could it be that over time the whole system from pedals up could be out of alignment? As in right or forward pedal has more travel result than the left reverse pedal? Plus, I’m starting to think the noise (loud, shrill rubbing/grinding, constant and more intense the more the pedal is pushed) when reversing might be coming from the pump area. Doesn’t do it when I had it jacked up all around but when I’m in the seat and moving it, I hear it—just can’t get my ears that far back there when I’m operating 😜
Depending on the control system you have, they all can go out of alignment.

As @m5040 mentioned a certain amount of whining at low oil temperatures is to be expected to happen due to higher oil viscosity, but try to minimize it by letting the oil warm up. I believe that @MossRoad starts his and lets it run for a while (15 min?) while he does some hand shoveling. If your pump is not in trouble, the whining sound is the oil cavitation as it is being pump and the cavitation is very hard on, and damaging to, surfaces.

All the best,

Peter
 

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