Are 650/750 Carbs (off of 81-83 YICS Motors) the Same?

As per the subject,

I'm looking at a 81 750 as a "winter project"... I know the carbs are both hitachis, but would they be the same model as what's on my 650? HSC-32s or HSC-33s? If so I know mine should be clean enough, would be great to have a second set or even another bank to clean up and keep/sell.

Thanks!

Marcel

 

According to the Haynes manual, BOTH engines use the same carb set, HSC-32.

 

same carb hsc-32, different jets though

 

good call

 

Different jets, AND DIFFERENT emulsion tube needles...check the catalogs, they have different P/N's.

Not that changing jets and needles will contraindicate a second set of otherwise identical carburetors.

 

Double check all the air jets also.

MN

 

Wow thanks guys for the info! If anything its nice to know I'll have a spare bank of carbs, more or less!

 

650 HSC32 carbs -
Main jet: 110, Pilot jet: 40, Main air jet: 50, Pilot air jet: 195, Needle: Y-10

750 HSC32 carbs -
Main jet: 120, Pilot jet: 40, Main air jet: 80, Pilot air jet: 225, Needle: Y-13

Needle jet is the same for both. 3.2mm
Fuel level on both is 3.0mm +/- 1mm

 

I adapted 650 Maxim carbs for my 750 Seca by doing the above swaps.

Kept me from having to do throttle shaft seal surgery.

 

That's my plan (if I get the bike that is). I can see that the ones on the SECA were leaky, although I've split a rack before it would save me some time for sure.

 

+1 to Tskaz, for the elaboration.

 

Yep, thanks, this info will be handy!

 

It's not hard. More time consuming than anything else. Good bonding experience with your ride.