Navybratboy Posted October 14, 2014 Share Posted October 14, 2014 can any one help here? shed some light on this subject for me and my grandfather? Link to comment Share on other sites More sharing options...
skishop69 Posted October 14, 2014 Share Posted October 14, 2014 It is a vacuum operated secondary. When the load on the engine is sufficient, the primary opened to a certain degree and (I believe) the choke open at least 3/4, it will open based on the amount of vacuum present in the primary barrel. It can be reworked to be a manual secondary. Link to comment Share on other sites More sharing options...
Loyale 2.7 Turbo Posted October 14, 2014 Share Posted October 14, 2014 Maybe this writeup could be Helpful, if you want to convert your carburetor's Vacuum operated secondary, onto a more reliable mechanical operated Secondary: ~► http://www.ultimatesubaru.org/forum/topic/147163-mechanical-conversion-on-hitachi-carburetors/ Kind Regards. Link to comment Share on other sites More sharing options...
Navybratboy Posted October 15, 2014 Author Share Posted October 15, 2014 Thanks guys ill see what me and gran dad can do Link to comment Share on other sites More sharing options...
Loyale 2.7 Turbo Posted October 16, 2014 Share Posted October 16, 2014 You're Welcome! Please let us Know what route you'll choose... and the Results. Kind Regards. Link to comment Share on other sites More sharing options...
Navybratboy Posted October 18, 2014 Author Share Posted October 18, 2014 I would like to do the mech secondary. The write up isn't all to descriptive so I think my grand dad and I will have small issue fallowing it Link to comment Share on other sites More sharing options...
Loyale 2.7 Turbo Posted October 19, 2014 Share Posted October 19, 2014 ... The write up isn't all to descriptive so I think my grand dad and I will have small issue fallowing it I agree that the Writeup is not so Descriptive; the Reason is because it is written / intended for people with previous Mechanical Experience and Knowledge on Carburetors, they'll understand easily the ideas. So if you are newbies in the Carburetor escenario, it is better idea to take your Carburetor to a Professional mechanic, or someone who has more experience with carburetors, otherwise it could be Dangerous to play with it, for your safety and health. Remember: Carburetion is somehow an Art, while Fuel injection is a science, to play with a carburetor is like playing with Fire and Gasoline, so please do not misunderstand me, I'm not disrespectful nor rude, I'm only concerned for your safety. Kind Regards. Link to comment Share on other sites More sharing options...
silverback Posted October 20, 2014 Share Posted October 20, 2014 If the modification seems difficult for you, call Carbs Unlimited, in Kent. They deal with Hitachi carbs. Check their websites first. Link to comment Share on other sites More sharing options...
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