one more glitch in an old bike

Reply Subscribe

Thread Tools

Search this Thread

May 19, 2009 | 11:45 PM

#11

roadway873

Thread Starter

Advanced

Joined: Apr 2009

Posts: 80

Likes: 0

please do i will take any info I can get E--------jeffdille@comcast.net-----------

May 19, 2009 | 11:52 PM

#12

roadway873

Thread Starter

Advanced

Joined: Apr 2009

Posts: 80

Likes: 0

according to my book there are 4 major parts -pump adj. screw------------idle mixture screw--------throttle stop screw-----rocker arm---is the pilot screw the same as the idle mixture screw or the pump adj. screw???????????

May 20, 2009 | 05:19 AM

#13

IronMick

Stellar HDF Member

Joined: Jun 2008

Posts: 3,179

Likes: 118

From: London, ON Canada

Pilot screw == idle mixture screw.
Pump adjusting screw probably adjusts accelerator pump
throttle stop screw == idle speed screw

May 20, 2009 | 09:35 AM

#14

carlgrover

Seasoned HDF Member

Joined: Oct 2007

Posts: 8,852

Likes: 2,494

From: Decatur, Alabama

Quote:

Originally Posted by roadway873

any tips on adjustments? went for a ride the other day, ran kind of bad then all of a sudden, ran perfectly out of the blue except idled real fast. Checked plugs @ home and they were all carboned up, plus bike seemed hot-need adj. tips------got any?

Before you start tinkering with the carb you had better check your intake manifold for leaks. That real fast, hot, idle smacks of the famous intake leak.

May 20, 2009 | 11:19 AM

#15

roadway873

Thread Starter

Advanced

Joined: Apr 2009

Posts: 80

Likes: 0

Thanks you've been a freat help----jeffdille@comcast.net

May 20, 2009 | 02:09 PM

#16

FilthyLucre

Road Master

Joined: Jun 2008

Posts: 1,078

Likes: 39

From: NW Florida

Quote:

Originally Posted by roadway873

Help I can't ID the carb on my 76 ironhead-------------all it says is AMF Harley Davidson Japan ---any ideas and if so how to adjust-If it says Japan does it have to be a Kehin?????????????????????????????????/

Early 76 Ironheads had a bendix carb. In late 76 they introduced the Keihin. This was a butterfly carb not to be confused with the later Keihin CV carb on the evo's. They have had several models over the years. If it has a fully adjustable low speed mixture screw. (the one closest to the manifold flange) it is a 1976 model. If it has a plastic limiter cap it is off a 78 or 79 model. If the low speed needle is hidden by a plug it is an 80 or latter model. The 1976 model was the best of the bunch. They all came with a label telling the part number but that usually didn't survive cleaning. Set up properly they were basically fool proof. I ran one for 25 years and never had to readjust it.

May 20, 2009 | 02:36 PM

#17

piniongear

Stellar HDF Member

Joined: Feb 2006

Posts: 3,035

Likes: 17

From: Houston Texas

But a Bendix is not going to be stamped 'Japan'. In the 1970's Bendix was a made in the USA item, and hopefully still is today.

If the OP needs info on tuning a Bendix then I have all the info he could hope to have. Just ask........... pg