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Post by Deleted on Apr 14, 2018 18:08:51 GMT -5
Well I got my little Bandit cleaned up, looks like it never really was used much, the paint on the bar is still on top where the chain rides. Anyway I put new fuel lines on and had to repair the rewind. (Lost my religion on that one) took one plate off the carb and it actually looked like a new kit or not used much after so I put that back together. Problem is it won't pull from the tank. I went ahead and replaced all the diaphragms after that still wouldn't pump. Had a little trouble setting the metering lever, it seemed to be wanting to stick but I got that freed up. Still won't pump. I have a pressure and vacuum tester now, hooked it up and it will hold 30psi without popping off. That may be correct but I was thinking it should pop off on its on. If I depress the metering lever manually, it will release but otherwise it will hold that pressure. Any suggestions?
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Post by sweepleader on Apr 14, 2018 18:24:56 GMT -5
You mean the needle is sticking closed? If so, you will have to find the binding that is still happening. It could be the lever is pushing sideways on the needle, holding it against the bore it rides in, or twisting it at the top were it forks over the needle. Maybe the spring is bound up some way, is it in correctly? Really hard to guess without seeing it...
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Post by Deleted on Apr 14, 2018 18:38:04 GMT -5
yea its all in correctly I actually removed all of it the went back in with one piece at a time. I put just the metering lever in, it moved freely, then added the spring still fine, then added the needle and it was binding or at least acting like it. I kept fiddle faddling with it until it freed up. I think the angle of the metering lever fork on the needle was the source of the bind. Anyway it works freely now but still doesn't pump. Not sure yet what the problem is
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Post by Deleted on Apr 14, 2018 19:07:41 GMT -5
turns out the metering lever was not set correctly. I assumed it was to be set with the floor of the pump body like the others I have rebuilt but that is not true for the HDA. According to the service manual on Walbro's website the metering lever should be set level with the outer casing which is a good bit above the floor. I made this adjustment and it worked freely, installed and it pumped fuel good. Now I gotta get a new plug, I'm assuming the old one suffered the crossfire between me and the rewind spring as it is now a two piece. Collateral damage lol
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Post by sweepleader on Apr 14, 2018 19:18:20 GMT -5
Well, that's a new one for me. Glad you got it going, or will when you get the plug fixed. :{)
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Post by onlyhomelites on Apr 14, 2018 19:57:56 GMT -5
Those two piece spark plugs work about as well as a two piece crankshaft!
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Post by Deleted on Apr 14, 2018 20:27:45 GMT -5
Just think,you could have a two for one sale! Lol
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Post by Deleted on Apr 15, 2018 9:14:50 GMT -5
Ok turns out I was wrong...sort of. According to a service manual on Walbro website the HDA metering lever sets with a straight edge across the outer carb body which puts it above the floor of the carb body. That’s what I did and it did start pumping and now seems to flood. Where I was wrong was that I am not dealing with an HDA but a WTA. So now I’m probably too high. I also noticed that’s not a straight edge Walbro is using but a special metering lever tool. I found one on Amazon that has the Walbro tool and Zama tool for 12 bucks so I ordered it. I figure if it works I will always use it to ensure I’m right. If it doesn’t well...I’m sure my 2 year old will enjoy playing with the box it comes in
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