Bx 1850 overheating

[downey]

Hi all,

My BX 1850 has been overheating since new, I have asked the dealer and salesman for a solution and this is the latest idea. Put a screen around the heat sensor to protect it from the rad. I have done this, it's better but still overheats when I'm cutting grass with my mmm 48" mulching deck. He also suggested I open the hood a crack. It doesn't open a crack, either full open or closed. But it does cool the motor when open, just not practical to cut grass with the hood open!
My questions: does anybody else have a similar problem and does sheltering the heat sensor seem like a good idea? I don't want to overheat the engine and not know about it.
Attached is an image the dealer sent me of what they did to screen the heat sensor.

 

[downey]

Hey Vic,
Thanks for the great info, I have been reading other people's problem with the same issue. The dealer with an area sales rep were going to come out on the 27th, so I cleaned everything as usual only this time I looked down the rad (instead of just cleaning the screen) and there was a bunch of grass and dust blocking the lower portion of the rad. I cleaned that out and put it through some pretty heavy cutting with no problems.
I had already made a small shield so that helps too. Anyway problem solved, should have listened better in the first place!

 

[montelatici]

Anyone that owns a BX1850 has the same issue because the sender is located ontop of the muffler!

I'd recommend putting an actual guage on that engine to ensure it's not really overheating, which it probably isn't, but it's a good measure of safety!

Try to shield the location where you attach the guage when you're doing this test (same spot as current temp sender) with a large ceramic tile, asbestos sheet, or some other non heat conducting product so you can get an accurate true temperature reading on the engine.

If the temp is normal, and it probably is, take a look on the engine for a different location that will accept a new sender unit.

If you can't find one, remove the radiator and take it to a rad shop and have them solder in a threaded port to accept your sender unit. make sure to take them the new sender so they can match the metric threading required to accept you sender.

Have them locate that port in a location that is FAR away from the horizontal under hood muffler system that you have now.

Install new 50/50 coolant, replace the rad cap, adjust the fan belt tension, extend the length of the wiring to reach the location of your new sender, and you're done. Leave the old sender inplace on the cylinder head as a "water plug".

An hour or two of your time and $100 bucks at the rad shop and Bob's your Uncle!!

Hi Vic,

Many thanks for your explanation as it has been bothering me not knowing if my BX1850 was overheating or not. My BX24 does not exhibit the same behavior so I was concerned. I did hit the block with an IR thermometer and the hottest point I could find was 217 degrees, which I think is an acceptable temp. for a liquid cooled deisel, isn't it/

Thanks,

Fred