Branson 3520r power loss

   / Branson 3520r power loss #1  

Rewsi1967

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May 8, 2025
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5
Tractor
Branson 3520r
Tractor runs idle, under load or driving loses power, question I have is, does the fuel pump run when key is on, tried filling a bottle but when turned key nothing happened
 
   / Branson 3520r power loss #2  
Tractor runs idle, under load or driving loses power, question I have is, does the fuel pump run when key is on, tried filling a bottle but when turned key nothing happened

Pretty positive mine does
 
   / Branson 3520r power loss #4  
Yes, you should be hearing the put clicking with the key on. That may indeed be your issue. I would check the fuses before replacing it though.
 
   / Branson 3520r power loss
  • Thread Starter
#5  
The Pic with hose circled had no fuel in it, I was going to use the hose in a bottle to pump fuel into it but nothing when I turned key on, can I jump the fuel pump manually by direct hook up to battery. If pump is bad why would it run w at idle ?
 

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   / Branson 3520r power loss #6  
Your lift pump provides fuel to the injection pump. The injection pump will pull fuel but that is not what it is designed for, it was made to push fuel, so when you throttle up, it cannot keep up with itself, starves for fuel, and will cavitate in time, requiring a rebuild or replacement. Your lift pump should be "clacking" as soon as the key is turned to run, feeding fuel to the injection pump. If you don't hear the "clacking", you either have a power issue or need a new fuel lift pump.
 
   / Branson 3520r power loss
  • Thread Starter
#7  
Fuse blown so far, will keep updated
 
   / Branson 3520r power loss
  • Thread Starter
#8  
So replaced fuse, turned key on fuse blew, removed pump tried to jump it with clips and battery, nothing happened, looking for replacement now
 
   / Branson 3520r power loss
  • Thread Starter
#9  
Can I use an aftermarket fuel pump 12v should be universal if I'm correct
 

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