2555HST Low rpm

[mikeman1]

Just got my mahindra 2555 hst today and the same thing happens. sometimes its fine, other times it won't go higher than 1600, then other times 1900...etc. w/o pto engaged, just driving around. will try it more this weekend and see if it only happens when it is warm, etc. and try to narrow down the problem.

 

[SC2555HST]

Just got my mahindra 2555 hst today and the same thing happens. sometimes its fine, other times it won't go higher than 1600, then other times 1900...etc. w/o pto engaged, just driving around. will try it more this weekend and see if it only happens when it is warm, etc. and try to narrow down the problem.

Yeh, please let me know .

 

[TSO]

Possibly a "vapor lock" in your fuel system, could be getting air in the system somewhere. Open and close your fuel cap, and also Purge the air out of your fuel filter (most filter housings have 3 positions: Air, On, Off). This has happened to me before, my RPM's dropped, that fixed it.

Worth a shot...

 

[mikeman1]

Thanks for the info. I will try it this weekend. Dealer said to check the throttle cable as well. I am sure it will be an easy fix. Looking forward to a little seat time. Only had time to play with the levers, buttons and doodads yesterday.

 

[SC2555HST]

Possibly a "vapor lock" in your fuel system, could be getting air in the system somewhere. Open and close your fuel cap, and also Purge the air out of your fuel filter (most filter housings have 3 positions: Air, On, Off). This has happened to me before, my RPM's dropped, that fixed it.

Worth a shot...

Thanks. I'll try it if it does it again.

 

[jmh1783]

Mine exhibited this behavior when I first got it. It showed up when it was hot. I'd shut it down and come back some time later and it wouldn't go to full throttle. My dealer did two things. First was the reflash. The second was to inject graphite into the throttle cable line. He said their are two sharp curves in the line. I've never actually looked at it. After that it has worked fine. I have had a couple of instances where it didn't quite get to full throttle and I moved it back and forth a couple of times to fix it. It may be the cable.

 

[SC2555HST]

I'll look harder at the cable. It's doing it right now. Bush hogged for 30 mins, stopped PTO and did 5 mins of grappling, turned on PTO, attempted to take it up to PTO speed. Won't go past 1500. Stopped PTO, same thing, 1500 max. I've had the reflash. Gotta check the cable I guess next.

 

[mikeman1]

Well, I tried it today and it seemed fine. I put cable lube on it anyway on the left hand side where ti comes out by the engine and put it on the cable and on the housing that moves back and forth. used it all day turning it on and off just trying out everything, all switches, levers, mounting implements with hydraulics, taking the loader on and off, backhoe on and off, etc. no problems at all with the throttle. everything works fine. Nice power, used the 6ft rotary..real nice! The only thing I question is when the pto is engaged it clicks, right at then shaft, like a pawl is on. when I raise the rpm the clicking goes away. I remember someone else had the same issue on here. I will have to search for it. anyway, with the machine off i tried turning the spindle/shaft backward and it does not turn counterclockwise, but it turns clockwise and you can feel something like a pawl engage/disengage.

Everything else works real nice. What a nice machine.