Warm Up

Stmar

Member

Equipment
B2650HSDC
May 23, 2017
877
24
18
Buffalo, Wyoming
How do you determine the warm up time for your tractor? My B2650 starts out at the mid 900's rpm when cold, after about 5-10 minutes it is up to mid 1050's. This is my minimum warm up, I usually go at least 15 minutes especially if it is cold (below 30F).
 

FreezinGator

Member

Equipment
BX1500 LA181 FEL 48MMM Back blade
Jul 10, 2020
53
37
18
Upstate NY
The operators manual for my BX says above 32F at least 5 minutes, 14F to 32F 5 to 10 minutes, -4F to 14F 10 to 15 minutes and below -4F more than 15 minutes. I try to go by that at least for the initial start up for the day and wing it from there. Alot of times I will give it a few minutes to get it kind of warm to move it out of the garage and not really work it until it is fully warm as the manual suggests. I can usually find something to do while it is warming up like gas up the chainsaw/snowblower, run the string trimmer, grease the FEL, etc.
 

Freeheeler

Well-known member

Equipment
b2650 tlb
Aug 16, 2018
621
384
63
Knoxville, TN
I start it, by the time the garage door opens all the way (maybe 10 seconds) I bump the idle up to about 1100, then back out of the garage. By the time the garage door closes, I'm ready to bump it up to 1400 or so and start heading to to side of the garage to attach whatever I'm using that day. Once forks or bucket or whatever is attached I figure she's warmed up enough to go to work. I'm in TN so it never really gets cold. Letting it sit and idle for 15 minutes would be a complete waste of fuel an time for me. Mine has a distinctive difference in how it sounds at start up vs once warmed up a bit. Probably not the most accurate method, but once she sounds warmed up that's good enough for me to go to work. BTW, my resting idle is 1025 or so, I'm assuming that was set at the dealer. 950 sounds kinda low, I don't know what the book says to set the idle to but now I'm curious.
 
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nbryan

Well-known member

Equipment
B2650 BH77 LA534 54" ssqa Forks B2782B BB1560 Woods M5-4 MaxxHaul 50039
Jan 3, 2019
833
442
63
Hadashville, Manitoba, Canada
Don't start and warm your tractor at idle. When I've parked my B2650 warm and not using again for a while (long enough for engine to cool) I set the throttle lever up a bit so it's idling warm around 1250 (+-) rpm when I shut it down. It's a habit now - bump the throttle lever up a bit b4 shutdown.
That way it's at "warm-up rpm" as soon as I start it cold next time. 5-10 seconds on the glow depending on temps and fire it up and go do something else for a few minutes while she warms at 1250ish rpm.
The manual says set idle to "50%" for cold starts, or something like that. My operating loaded rpm is 2500 rpm, so I set the tach to 1250.
Works great for me. There's way less engine smoke and coughing at startup with the rpm bumped a bit.
 

BobInSD

Active member

Equipment
L5740
Jun 23, 2020
256
59
28
South Dakota
Don't start and warm your tractor at idle. When I've parked my B2650 warm and not using again for a while (long enough for engine to cool) I set the throttle lever up a bit so it's idling warm around 1250 (+-) rpm when I shut it down. It's a habit now - bump the throttle lever up a bit b4 shutdown.
That way it's at "warm-up rpm" as soon as I start it cold next time. 5-10 seconds on the glow depending on temps and fire it up and go do something else for a few minutes while she warms at 1250ish rpm.
The manual says set idle to "50%" for cold starts, or something like that. My operating loaded rpm is 2500 rpm, so I set the tach to 1250.
Works great for me. There's way less engine smoke and coughing at startup with the rpm bumped a bit.
I was taught to kill a turbo-charged engine at the lowest possible RPM. I was also told (here) that a lot of the recommnded warm up time was to to with the HST/hydraulic fluid, especially at very low temps. I'm not sure that either applies here but depending on your transmission and your climate YMMV.
 

nbryan

Well-known member

Equipment
B2650 BH77 LA534 54" ssqa Forks B2782B BB1560 Woods M5-4 MaxxHaul 50039
Jan 3, 2019
833
442
63
Hadashville, Manitoba, Canada
I was taught to kill a turbo-charged engine at the lowest possible RPM. I was also told (here) that a lot of the recommnded warm up time was to to with the HST/hydraulic fluid, especially at very low temps. I'm not sure that either applies here but depending on your transmission and your climate YMMV.
The B2650 is not a turbo.
 

RalphVa

Active member
Jan 19, 2020
578
227
43
Charlottesville
How do you determine the warm up time for your tractor? My B2650 starts out at the mid 900's rpm when cold, after about 5-10 minutes it is up to mid 1050's. This is my minimum warm up, I usually go at least 15 minutes especially if it is cold (below 30F).
I start 'em up and go gently right away. Won't take but a couple seconds for it to run smoothly. Have done this all my 62 years of driving stuff. Never an engine failure. Ran one to 25 years and 415k miles. Still started and ran like new.