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John deere x304 riding mower stalls under load


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03-10-18, 08:09 AM   #1  
John deere x304 riding mower stalls under load

Mower: John Deere x304 Engine: Kawasaki FH491v-DS04-R
Mower starts fine and engine runs normally. However late last summer the engine started bogging down and almost stalling with the blades engaged after it was warmed up. There was no stalling with the engine cool. The engine runs normally when blades are disengaged after bogging down.
I've replaced the fuel filter and spark plug, cleaned the air filter, and on top of the deck. Engine still boggs down.
Help! Could one (or more) pulley bearings be causing the problem or could it be engine related?

 
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03-10-18, 10:36 AM   #2  
Chances are more likely it is deck related....back the tractor up to a tree and try to push it over, if the engine does not bog down...or the tree falls over, the problem is not the engine


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03-10-18, 11:54 AM   #3  
No trees were harmed. There was slight (very) play, maybe 1/8” at most, in one of the blade shaft pulleys/ bearings once I got the belt off. The pulley would move before the blade started turning. It wasn’t bad at all. That’s all I could see. The rest of the pulleys rotated without grinding or free play and seemed fine to me. Wondering if that’s enough to cause the motor to bog down. The belt also looks a bit worn. Another source of the problem?

 
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03-10-18, 12:27 PM   #4  
When it starts to bog down, does it help if you give it a little bit of choke? You might be developing a vacuum in the tank or having a low flow condition from the tank to the carb.


"Who is John Galt?" - Ayn Rand (Atlas Shrugged)

God bless!

 
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03-10-18, 01:00 PM   #5  
Iíll try that next time it happens

 
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03-25-18, 09:33 AM   #6  
Using the choke seemed to help a bit. I'll try cleaning the cap. Is there an easy way to get at the gas line? It seemed like JD put the frame around the tank and the line. I'll see if there's a relatively easy way to drop the tank.

 
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03-25-18, 10:41 AM   #7  
There's not any really easy way. You can use a double hose barb and connect the new fuel line to the old one and as you snake the old one out, it pulls the new one in.


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03-27-18, 12:35 PM   #8  
ok -- maybe when I want to get into more trouble (I mean have more fun )

 
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