Coolant overflow cap keeps popping off?

[legbuh]

This ever happen to anyone? It's on a BX1860 with just over 50 hours. I've put it back on at least 5 times now. I check it often.

Coolant level is ok. Temp guage never really gets much higher than the middle (except when mowing on a hot day).

 

[jesseb3@att.net]

Not me, but I have a xx50. The dealer should be contacted with so few hours. Do let us know what he says/does.

You are sure you're snapping it all the way on, right?

 

[Jimmy Joe]

I don't know how your tractor is set up but the coolant reservoir should have a hose coming from the radiator and one exiting it for a vent and overflow. If the vent hose is kinked or sealed some how it could build enough pressure to blow the cap off.

 

[crazyal]

Sounds like either your cap or radiator needs to be replaced. One of the two is not made correctly. A radiator cap should never pop off, it has a safety feature so that if you try to remove it when preasure is built up the cap and steam will not hit and burn you. I'm sure the dealer will get you a new cap to try first (as it's easy and cheap).

 

[rScotty]

This ever happen to anyone? It's on a BX1860 with just over 50 hours. I've put it back on at least 5 times now. I check it often.

Coolant level is ok. Temp guage never really gets much higher than the middle (except when mowing on a hot day).

I'm guessing your overflow/vent pipe is plugged up.

 

[Stradbash]

I'm voting for a pinched or kinked overflow tube too!
You might need to take off the engine cowl to see it well enough... Not hard but a tad tricky the first time.

 

[Deano]

Ditto, overflow not venting...