Go Bottomno fuel from injuction pump
 | YanmarMarv
Join Date: Jul 2003 Posts: 14 Bad Axe, Michigan 
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2003-11-09 68346
I just bought a YM1810D from an importer got it home, had to put fuel in it, bleed the air out of the line to the injection pump. No fuel is coming out the pump to the injectors. This tractor has a separate shut off form the throttle, could something be stuck in there to not let fuel out? Or is there something wrong in the pump. PLEASE HELP
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| 1peco1
Join Date: Nov 2003 Posts: 6 Thorsby Alabama
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2003-11-09 68350
Bleed the fuel lines going to the injectors.
Danny ....
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| TomG
Join Date: Feb 2002 Posts: 5406 Upper Ottawa Valley 
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2003-11-10 68362
I'm not familiar with shut-offs other than solenoids and the tank valve. I don't know if Yanmars have fuel shut-off solenoids like some tractors but I'd check fuses. I guess that if you bled the fuel lines then you know fuel is getting to the pump. Usually there's a bled port on the pump itself. If fuel comes out there then there's fuel to the pump. Most pumps have a throttle lever. The lever should move freely when the hand throttle is operated. If it doesn't then the pump may be in a shut off position.
If you loosened an injector line fitting and cranked the engine when the throttle was open fuel should come out. If it doesn't then air locks in the line isn't the problem. If fuel does come out bleeding the lines can be a problem and it may have to be repeated several times. Take a lot of care loosening injector lines. There can be high-pressure even when the tractor is off and serious injuries can result.
There are other possibilities but I'd check through these ideas first. Just on the off-chance that it's not a fuel problem I'd see if the tractor has a compression release and that it's not released. ....
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