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650 Posts
Got the deck on my 446 and finally got mowing but I'm having engine problems. Also I'm mowing some thick grass, this area I'm working on I mowed last fall and I'm just getting around to getting it knocked down for the first time. Several parts I have had to go over twice to get a good cut.
After about 20-30 minutes, the engine starts cutting out. The first time the left cylinder stopped firing and I crippled it back to the garage, let it cool off and pulled the cylinder heads thinking the worse that a rod broke but there was not mechanical noise or crunching. Didn't find anything wrong so I put the heads back on, torqued the bolts and it fired up just fine.
Headed back out and after 20 minutes or so, the same thing happened but not as worse in the sense that both cylinders were firing but if I put any load on it the engine would cut out and almost die.
I tend to think the of the worse when something like this happens but the overall feeling I have is that it's overheating as while I mowing in out in the open the entire front of the tractor is hot, even the dash tower is excessively warm.
When is does bog down, there is slight light colored smoke from the exhaust when the engine recovers after taking the load off it.
Right now my plan is to let it cool off and try it again in an hour. all engine sheet metal is in place, clutch fan is attached.
Not withstanding that, what could this be, carb problem? Gas? (I'm starting on the 2nd full tank since I got this 446 running)
Also this it the first time of really running it short of a few test drives and 30 minute tilling job, chances this 446 has been ran more in the last couple days than it has been ran the prior 5 years. Up to now I have no issue in any manner with the engine as when it runs it quiet smooth and has plenty of power.
After about 20-30 minutes, the engine starts cutting out. The first time the left cylinder stopped firing and I crippled it back to the garage, let it cool off and pulled the cylinder heads thinking the worse that a rod broke but there was not mechanical noise or crunching. Didn't find anything wrong so I put the heads back on, torqued the bolts and it fired up just fine.
Headed back out and after 20 minutes or so, the same thing happened but not as worse in the sense that both cylinders were firing but if I put any load on it the engine would cut out and almost die.
I tend to think the of the worse when something like this happens but the overall feeling I have is that it's overheating as while I mowing in out in the open the entire front of the tractor is hot, even the dash tower is excessively warm.
When is does bog down, there is slight light colored smoke from the exhaust when the engine recovers after taking the load off it.
Right now my plan is to let it cool off and try it again in an hour. all engine sheet metal is in place, clutch fan is attached.
Not withstanding that, what could this be, carb problem? Gas? (I'm starting on the 2nd full tank since I got this 446 running)
Also this it the first time of really running it short of a few test drives and 30 minute tilling job, chances this 446 has been ran more in the last couple days than it has been ran the prior 5 years. Up to now I have no issue in any manner with the engine as when it runs it quiet smooth and has plenty of power.