tonybada
Bronze Member
I just bought a B7500HST it did not come with an owners manual( I intend on getting one). My question is what is the procedure for cold weather starting? I have never had a diesel tractor with glow plugs.
Cold weather starting
- Thread starter tonybada
- Start date
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botayota
Silver Member
Turn the key to the start position, and wait for the glow plug lite to go out then start the tractor.
Snoho3
Member
Not sure about your model, but FWIW, on my B7800 the glow plug indicator light doesn't extinguish when it's ready to start. From the B7800 manual -
Over 32F
Preheating time 2 to 3 seconds
32 to 23 F
Preheating time 5 seconds
23 to 5 F
Preheating time 10 seconds
It also goes on to say:
COLD WEATHER STARTING
When the ambient temp is below -5C (23F) and the engine is very cold. if the engine fails to start turn off the key for 30 seconds. .... Make sure that the starter is not turned continuously for more than 30 seconds.
Hope this helps
Snoho3
Over 32F
Preheating time 2 to 3 seconds
32 to 23 F
Preheating time 5 seconds
23 to 5 F
Preheating time 10 seconds
It also goes on to say:
COLD WEATHER STARTING
When the ambient temp is below -5C (23F) and the engine is very cold. if the engine fails to start turn off the key for 30 seconds. .... Make sure that the starter is not turned continuously for more than 30 seconds.
Hope this helps
Snoho3
Not sure about your model, but FWIW, on my B7800 the glow plug indicator light doesn't extinguish when it's ready to start. From the B7800 manual -
Over 32F
Preheating time 2 to 3 seconds
32 to 23 F
Preheating time 5 seconds
23 to 5 F
Preheating time 10 seconds
It also goes on to say:
COLD WEATHER STARTING
When the ambient temp is below -5C (23F) and the engine is very cold. if the engine fails to start turn off the key for 30 seconds. .... Make sure that the starter is not turned continuously for more than 30 seconds.
Hope this helps
Snoho3
Wow, the glow plugs work that fast? I thought I read somewhere on here that they were using the glow plugs for 1 minute. Well I will obviously try what you posted first. Where do you set the throttle?
Snoho3
Member
The B7800 manual says to move the throttle "about halfway" prior to starting. Doesn't sound too exact. In fact, when I start mine I never move the throttle at all. Perhaps someone on here will tell me that I'm not doing my engine any favors, but I've yet to have a problem starting it.
Snoho3
Snoho3
steverichmond
Silver Member
I do the same. In fact I start mine at idle. My thoughts are, the engine id cold and want the oil to circulate before increasing revs. Is this approach wrong?
I do about the same on my B7510 as it was described before. I actually give it 4-6 sec when it is warm outside and about 8-10 when below freezing. I start on idle too and when the oil pressure light goes out (about 1sec) I turn the throddle up to about 1500rpm. Let it run like that for a while. I always make sure that the temp gage needle moves noticeably into the "C" before doing anything besides slowly driving it to where I'm going to work. On very cold days I just let the tractor sit in the front of the house at 1500rpm, go in, have a coffee and start work after that. I actually plug in the block heater below 32F but there are many threads about that and warm up methods that people follow.
escavader
Veteran Member
Idont start mine at idle ,but i never give it 1/2 throttle .Ido crack it open a bit [mabey 1/4] it does help it start right up.If i dont crack it ,i sometimes need to glow again.Idont like to many rpms at startup either as someone else said.
ALAN
ALAN
Winter starting begins before you stop the engine. At that point, you should set the throttle to the RPM you want to start it at. (I use 1400-1500). I can gage the engine warm-ness by the rpm drag. It will initially run at 1200 or so then ease up to the set rpm.
check - I've only started my tractor at -30, but that's a L and not a BX. The glow plugs do work good. No heater. But a block heater is the cat's meow, if you have a place to plug it in.
jb
check - I've only started my tractor at -30, but that's a L and not a BX. The glow plugs do work good. No heater. But a block heater is the cat's meow, if you have a place to plug it in.
jb
Egon
Epic Contributor
Not a BX24/Bx25 but using an inline heater my Kubota B7100 got started on more than one -35C morning.
The hydraulics would be very stiff as would the hydro. I'd usually just drive it around slowly at a lower throttle setting till things warmed up a touch and then cycle all the hydraulics through their full range.
This was also done a few times just using a tarp and small electric heater. There is no way this tractor would have started without the addition of some type of heat at these temperatures.
Northland
Platinum Member
I have a block heater on my B7800 and it makes for much faster operating times. The Kubota dealer in Northern Michigan, where I bought the B7800, puts block heaters on every tractor they sell-it is not an option.
I also bought a Katz magnetic heater for $30. I place it on the hydraulic fluid tank at the same time the block heater is on. This really helps with getting going when it's -10C to -30C up here in Northern Ontario
No manual here but someone should have a PDF for your tractor
Index of Kubotabooks/Tractor Parts Manuals/
I also bought a Katz magnetic heater for $30. I place it on the hydraulic fluid tank at the same time the block heater is on. This really helps with getting going when it's -10C to -30C up here in Northern Ontario
No manual here but someone should have a PDF for your tractor
Index of Kubotabooks/Tractor Parts Manuals/
escavader
Veteran Member
Ihave started the tractor at 10 below no problem,If its colder than that ,there is no way im leaving the house
smfcpacfp
Veteran Member
- Joined
- Nov 21, 2007
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- Tractor
- Kubota B3030HSDC
I also use a Kubota block heater when the temerature is below freezing usually no less than a 1/2 hour.
At -15F last year, I left it on for an 1 1/2 hours. It started quite easily and I also left the glow plug for about 10 seconds also.
I am sure it would have started at -15 w/o the block heater, but I am sure that it is less stressful. Another thing that I had happen when it got real cold (we had 38 days on which the temperature dropped below zero) was that the liquid ballast in the rear tires froze and made the tractor limp bit from the flat spots.
At -15F last year, I left it on for an 1 1/2 hours. It started quite easily and I also left the glow plug for about 10 seconds also.
I am sure it would have started at -15 w/o the block heater, but I am sure that it is less stressful. Another thing that I had happen when it got real cold (we had 38 days on which the temperature dropped below zero) was that the liquid ballast in the rear tires froze and made the tractor limp bit from the flat spots.
TUG HILL ADDICT
Silver Member
Cold weather starting is not as critical as cold weather operating especially with a Hydro...It's very important to let the machine run at idle to 5-15 (depending on the ambient temp) minutes prior to operating. Let the fluids warm up. Do not start the tractor and go at it.
I start my BX23 the same way...I just "bump" the throttle so it's not all the way at idle, turn the key to the glow plug position, count a slow 5 seconds then turn it over.
Don
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