How to access idle screw

[ventureout]

Finally starting to pick up the project again after putting it on hold for 2 months for a trip to Zambia, Africa!

 

I have rebuilt the carbs according to the service manual, and remounted them back on the bike. Now I have several problems that need to be addressed.

 

1. It starts, but idles high, backfires lots, and blows lots of smoke. Also, the longer it idles, the higher it starts to rev

2. The throttle doesn't snap back when released (maybe this is part of the high idle problem?)

3. I'm wanting to try adjusting the pilot screw. (Its under the brass plug in the attached picture correct?)

How do I get this plug out?

Once I have these items figured out, I'm wanting to move on to syncing.

 

Finally got the paid version of the forum. I'm ready to get this machine back on the road!

 

Thanks in advance for everyones help.

 

1991 Venture Royale

[camos]

Twist a wood screw into the plug hole until it bites then pull out the plug. Flatten the point of the screw until it will just fit into the plug hole. There is a small adjustment screw under the plug that must not be damaged by the removal process so don't go too deep.

 

Just a clarification, this adjustment screw is for the pilot jet which controls air movement not gas. The 4 idle screws are on the carburetor rack.

[ventureout]

Okay great, I'll start here. And now that you say that the idle is for air, I do remember seeing that in one of the circuit diagrams.

 

Also, do I need to replace these brass plugs or they're just there to protect the screw from dirt and can stay out?

[Marcarl]

If you cleaned the carbs then you should have had those caps off and cleaned the air mixture passage way. Those are not idle screws, they adjust the mixture at idles only. By your description, it seems to me that you have two things tat might need correction. First you need to check the routing of the throttle cables, they do NOT run over the nylon spacer in the shaft at it might seem to be, that spacer is a spacer, not a slider bearing. Second, you'll need to do a carb sync to get things right.

The idle screw is on the left side, hidden under the rail that joins the two carbs, in the middle between the two. It's actually a thumb nut, usually takes two fingers to turn, one from the one hand and one from the other.