Home Auctions Gallery Forum

honda305.com Forum

Vintage Honda Owners, Restorers, Riders and Admirers


CL77 Throttle Valve Position

Fuel System: Gas (Petrol) tanks, Carburators
Post Reply
uadmlj1
honda305.com Member
Posts: 54
Joined: Thu Oct 14, 2010 5:24 pm
Location: Las Vegas, NV

CL77 Throttle Valve Position

Post by uadmlj1 » Sat May 28, 2011 11:23 pm

I just replaced the throttle cable. What is the proper idle position of the throttle valve? I now have an extremely high idle and suspect maybe the cable has the valves too high at idle. Looking in the carb throat, the bottom of the throttle valve is about 1/8 inch visable. Thanks.
1966 CL77

teazer
honda305.com Member
Posts: 798
Joined: Mon Feb 08, 2010 10:32 pm
Location: Midwest US

Post by teazer » Sun May 29, 2011 9:21 am

With the throttle closed at the grip, the slide should be all the way down with maybe 0.5 - 1.0mm gap under it

uadmlj1
honda305.com Member
Posts: 54
Joined: Thu Oct 14, 2010 5:24 pm
Location: Las Vegas, NV

teazer or anyone else

Post by uadmlj1 » Sun May 29, 2011 4:30 pm

I rebuilt the carbs and now the engine races at idle. I searched the entire forum and found plenty of chat, I'm just not quite sure where to start.


How can you tell that the slide has bottomed out? If the slide is in corretly, what sould you see looking down the carb bore? Thanks.
1966 CL77

LOUD MOUSE
honda305.com Member
Posts: 7818
Joined: Mon Aug 15, 2005 8:23 am
Location: KERRVILLE, TEXAS

Re: teazer or anyone else

Post by LOUD MOUSE » Sun May 29, 2011 4:48 pm

Looking into the throat ya can see the cut angle of the slide.
On the side ya will see a screw which raises/lowers the slide.
Turn them OUT until the slide isn't contacting the screw.
On top where the cable enters the carb is a brass assy.
It should have the set nut out to the big end and be screwed in all the way.
ya can lift the slide and should hear it hit bottom when ya release it.
Put your thumb (left hand) into the right carb and middle (big) finger in the left carb.
Push hard while slowly twisting the throttle and be sure both slides lift at exactly the same time.
Adjust with brass assy then tighten with the nut.
Look into the throat and look as ya screw the adjuster (in) and look to see the slide raise a little. 1/32 in.
Adjust the air screw 1 1/2 turns out from bottom then ya are ready to start and adjust the carbs. ............lm


uadmlj1 wrote:I rebuilt the carbs and now the engine races at idle. I searched the entire forum and found plenty of chat, I'm just not quite sure where to start.


How can you tell that the slide has bottomed out? If the slide is in corretly, what sould you see looking down the carb bore? Thanks.

uadmlj1
honda305.com Member
Posts: 54
Joined: Thu Oct 14, 2010 5:24 pm
Location: Las Vegas, NV

Thanks

Post by uadmlj1 » Mon May 30, 2011 10:11 am

Thanks LM.
1966 CL77

Post Reply