Everybody,
I have spent quite a bit of time tuning my HS- 4s.. Could have been a
lot less time. Here's what I've found out the hard way.
Buy new needles and jets. Stick them in there and try setting the
mixture per the manual. If that doesn't work AND before you mess with
the float heights, replace the throttle shafts. You'll be surprised how
much this helps!
Also, the shafts seem to be much softer than the bushings. So put in
the shafts first and see if they aren't too loose. If you put a new
shaft and you can feel the side play still, then you either need
oversize shafts or you need new std bushings and shafts. In my case the
new shafts diddit. YA CAN'T TUNE THE CARB IF THE THING LEAKS AIR PAST
THE THROTTLE SHAFTS!!
My experience in the float height department is that it's very
forgiving. I. E.: 1/16" off can be handled by the jet adjustment. 1/8"
height seems to work OK. 3/16" is about the outside, is also the high
side of the spec.
My B is hummin' after a lot of jackin' around. Save yourself some
effort and don't be bullheaded, as I was!!!
Charley Robinson
`699 B
|