fishboy Posted February 16, 2012 Author Share Posted February 16, 2012 Thanks Doug! I'm afraid I already distorted the slot a bit....will that cause issues? Quote Link to comment Share on other sites More sharing options...
Quidam Posted February 16, 2012 Share Posted February 16, 2012 It won't be a problem with the function of the jet. Doug Quote Link to comment Share on other sites More sharing options...
fishboy Posted February 28, 2012 Author Share Posted February 28, 2012 Assembling the carb again and noticed the workshop manual stresses this: "NOTE: THe accelerator pump spring has a close wound end which must push on the accelerator pump ball" See picture from nanual below. Unfortuantely, the spring that was in my carb definitely does not. The ball is recessed so without the close wound end I can see that it will flop around a lot. Is this a problem?? Quote Link to comment Share on other sites More sharing options...
fishboy Posted February 28, 2012 Author Share Posted February 28, 2012 I think I'm going to be a hitachi expert by the time i finish this thing (been at it for 2 weeks!) Quote Link to comment Share on other sites More sharing options...
fishboy Posted February 28, 2012 Author Share Posted February 28, 2012 any ideas? Quote Link to comment Share on other sites More sharing options...
Quidam Posted February 28, 2012 Share Posted February 28, 2012 The end to the right in this pic goes down and serves the same purpose. Doug Quote Link to comment Share on other sites More sharing options...
GeneralDisorder Posted February 28, 2012 Share Posted February 28, 2012 Correct - the paper clip looking protrusion on the spring holds the check ball in the center and thus down on it's seat. As for being the Hitachi expert around here.....I used to fiddle with them quite a bit and have rebuilt a few dozen of them as well as made some posts on how to strip them down and simplify the hose nightmare. Ultimately you will come to the conclusion that the way they are setup is overly complex and they just won't do the things you really want like progressive linkage and they aren't big enough for good low-end toque. GD Quote Link to comment Share on other sites More sharing options...
fishboy Posted February 28, 2012 Author Share Posted February 28, 2012 But the paperclip protrusion doesnt "poke out" in any way so doesn't always push on the accel pump ball. It sits flush with the bottom of the larger barrel, and the ball sits inside a smaller barrel beyond this, and can flop around within that smaller barrel. Definitely hearing you on the overly complex statement! Quote Link to comment Share on other sites More sharing options...
GeneralDisorder Posted February 29, 2012 Share Posted February 29, 2012 It should be fine. The spring just keeps the ball from getting stuck up in the spring somewhere. It's just the accelerator pump check valve so when the plunger pushes down it will force the ball into the hole and block the passage. It's not supposed to push on it hard - if it did the ball wouldn't come off it's seat to let fuel into the pump chamber. GD Quote Link to comment Share on other sites More sharing options...
fishboy Posted February 29, 2012 Author Share Posted February 29, 2012 (edited) Okay last question I promise.. The bowl vent valve that was in my carb is missing it's plunger. It literally just doesn't have one, and I understand it is supposed to. So it just doesn't do anything. Is this a problem and will I need to get a new valve? Edited February 29, 2012 by fishboy typo Quote Link to comment Share on other sites More sharing options...
GeneralDisorder Posted February 29, 2012 Share Posted February 29, 2012 (edited) Don't worry about it. Bowl vent solenoids are to appease the emissions gNazi's. It can be open all the time and it won't hurt anything. All carbs had open bowl vents till about 1970. GD Edited February 29, 2012 by GeneralDisorder Quote Link to comment Share on other sites More sharing options...
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