carburetor. A dot of paint on the rubber can make removal / replacement easy, ( but a man needs to know his limitations. )
|These photos should help you identify your Hitachi Carburetor as
there is no name or model numbers on it. This one is a Hitachi
HSC32/4H7.00 from a 1980 Yamaha Maxim XJ650G.
Hitachi carburetors were used on many other vintage motorcycles.
68 mm diameter groove shown here.
|Please note the different
lengths on the cover screws.
|Yamaha Virago 78 mm groove
|YAMAHA VIRAGO XV700 XV750 XV920 XV1000
|Hitachi 68mm should fit XJ550, XJ650.Yamaha Maxim, Midnight, and Seca from
PLEASE MEASURE YOUR CARBURETOR GROOVE DIAMETER AS different
carburetors were used on different bikes, different years, and different
countries. We offer free exchange, but you pay postage !!
|Order Hitachi 78 mm for Hitachi HSC40
Carburetors used on Yamaha VIRAGO
Diaphragms fits fine to Yamaha XV100 TR1
|Check fit of diaphragm in carburetor
body BEFORE you remove rings!!!
Thank you very much for your kindful help and assistance and the fast delivery. Berlin/Germany WOLF......
|To prevent rotation or removal:
Some folks want to use Super Glue adhesive on the slide, and
this will not harm anything, but be sure not to get adhesive on the
sides of the slide. Use sparingly, as solvents are not good for the
|To prevent rotation or removal:
Some folks want to use Super Glue adhesive
on the slide, and this will not harm anything, but
be sure not to get adhesive on the sides of the
slide. Use sparingly, as solvents are not good for
|Hitachi 68mm diaphragm fitted to a Keihin
carburetor used on Honda VT600.
|Don, An update on the (K-72-S) diaphragms: I installed these diaphragms on 3 Hitachi HSC34 Carburetors. These were
standard issue carburetors on Yamaha XS850 motorcycles from 1980 and 1981. The groove diameter on the Carb itself
is actually 73mm, but the dish and slide groove measurements are the same. Also, the key is slightly smaller on the
Hitachi than it is on the Keihin. With a little trimming of the key, I was able to install them with little issue, and they work
In case anyone asks in the future, These are a great fit for the XS850 with Hitachi Carbs.
From: "Brian Webster" email@example.com
|I have a '82 xj750 Maxim. I have purchased 2 of these H-68 in August the same bike and they work great. Kevin
|I have received the diaphragms today in good order. 6 days!! Must be a record for items sent to Australia. Your package
actually arrived before a similar sized item I ordered from my home State of Queensland! Thank you again, I will be ordering
K-78 diaphragms for my CB360 soon. Kind regards, Adam James
|Hi just wanted to leave some feedback on the H-68 slide diaphragms I purchased from you: they work great on my 1981 Seca
750 rh .. This has to be one of the best products I have ever bought. Saved me a lot of money and I look forward to doing
business with you in the future. Thank you, Cory Silver
|Thank you so much. The H-68 diaphragms worked great and fixed my Honda Shadow. The 20 dollars I spent on the diaphragms
sure beat the 140 dollars quoted everywere else. Keep up the good work
Oh, and by the way they worked/went on a 1983 Honda Shadow 500 with a dual keihin carb with metal slides thanks again, Chris
|I purchased two H-78 for my 1982
Yamaha Virago 750 and they work
perfect. Saved me lots of money. You are
awesome. Thanks again . Dennis.
|I have previously purchased from you a
set of diaphragms for the Hitachi carbs on
my 1981 Yamaha XJ750 and am delighted
Kind regards, David Merry