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Stalls while plowing - Brand New!

35K views 53 replies 29 participants last post by  commander769  
#1 ·
Brand new 2016 Sportsman 570 and Polaris plow package. Doesn't even have 10 hours on it and stalls out while plowing. Seems to happen more frequently when hitting snow or stopping to shift. Read some of the previous posts and seems as if I'm not the only one. Dealer says make sure battery cables are tight then bring it in. Battery terminals are tight, gas is new this fall, not hitting the shut off on the handle bar, battery is about 12.28V while machine is off and 14 something running. WTF!!!! Has anyone gotten an answer or have a solid fix? Good thing I kept my snowblower.

Commander769 - tried to PM you but I must not be completely activated yet.
 
#37 ·
Never heard of it and I have seen some videos of 570's pushing pretty good amounts of snow. Does it seem to stall out when it gets too much of a snow load or does it seem to be related with something you do with the throttle?
Mines like this and it seems about the same way others stall aswell. Happens towards the end, you can hear me tappin on the throttle.

Sent from my SM-N920T using Tapatalk
Your video just shows a big exclamation mark.
 
#6 ·
Take it back in to the dealer...... utilize the warranty!!
 
#7 ·
Mine stalls at least a couple of times while plowing too. I think it has to do with the battery power, but I could be wrong.
Always starts back up.
 
#11 ·
Mine did the same thing, hard push into a bank, hard on the throttle, as soon as it starts to slow down, release the throttle...stall; restarts right away. After dozens of these occasions, I started to notice things...

battery - I have a hardwired volt meter running all the time, battery voltage just fine; even after plowing for an hour. Not a battery issue in my case
Method - I backed off a bit on the throttle before hitting the bank, that improved things but still stalled once and awhile
Gas - I was running the same gas the dealer had in it, who knows how long it was sitting. I ran it down to 1/3 and filled it up with new gas...new gas and new method; no stalls, in the last 3 plow sessions (each around 1-2 hours).

My guess, only a guess, is that its a bug in the fuel curve in the computer and maybe in combination with the EBS. My reasoning is that hitting the bank (everything is slowing, and heating up) is indicating to the computer that it should back off the injector pulses, at the same time I'm lifting the throttle input, an addition requirement to back off the injector pulses - one of the two is adjusted for too quickly/radically and the engine fuel is instantly cut off. Makes sense in my tiny engineering trained mind since when it stalls, it doesn't sputter or wind down, it just quits instantly. The other thing to note it that it starts right up, no winding and sputtering; starts instantly. The stoping instantly indicates no fuel, the starting so easily also indicates there isn't any wasted fuel in the engine (no signs of flooding or partial flooding when it starts).

I'm going with a combination of crappy dealer gas and a bug in the computer fuel curve. Good gas and by slightly altering my plowing style, I get good results...

That being said, it sucks that I can't take this thing full on into a snow pile and not worry about whether or not its going to stall out at the end.

ron
 
#12 · (Edited)
You are over-thinking it.

It's just the clutch still engaged with engine RPM above idle when the bike hits a resistance that slows the bike to a dead stop, with too much friction against wheels to keep spinning at suck low speed. Hence.. motor stalls. Same thing happens if you accidentally let go too late going over logs.

The same exact problem happens with plow trucks that have standard transmissions or torque converters that lock in 1st (rare)

For those that do have battery problems keeping up with the plow... thats a different story. My battery is pretty weak as of lately.. so what I do is i only move the winch when throttle is applied. It takes a bit of practice finding a good groove ballancing throttle, winch, clutch position and rpm but once you do, bike will NEVER stall.
 
#14 ·
Unless a clutch can disengage within a split second (which it cannot), it will stall if it comes to a complete stop against a snow bank before it disengages. It's basic mechanics. The engine rpm cannot go from whatever to 1250 in 0.111 seconds. It just cannot. Even if it could, by some miracle, the clutch still has a delay, too, due to centrifugal force.
 
#19 ·
Well, plowed 3 driveways on Sunday and it only happened one time. When it stalls, the dash still has power so maybe not a battery issue. The dealer hasn't heard of this problem so Ill print up all of your recommendations on this thread and hopefully we can figure something out. Thanks for all of your help guys.
 
#22 ·
Same here ,2017 570 . stalls every 4 or 5 times I push a snow bank hard and starts up really hard after. Dealer says they" never heard of it " told me to adjust the throttle cable . even though it had 5 miles on the odometer when this bullshit started. So I tried to adjust the cable as they claimed the cable must be stretched @ FIVE MILES. Of course they was nothing to adjust , no slack in the cable. Now the dealer wants me to leave it with them for a couple days. I'm not dropping my plow rig off in the middle winter. Is anyone else making progress ?
 
#28 ·
Mine used to randomly shut off. The throttle safety switch was the problem. Try defeating the switch and see if it stops doing it. I have mine defeated permanently.

 
#30 ·
had this issue with the 400 ho once cable was adjusted correctly never happened again but I will remember this vid.
 
#31 ·
Reading the issues owners are having, really, should a person have to do it a certain way. What happened to the old days of you hit the throttle and it works. There shouldnt have to be a "certain way" to use the quad so this doesnt happen.

Its like loaning something to someone and having to explain how to use it a certain way for it to work, whe it should just work the way it was designed to