Question about 1986 Honda VT 500 C Shadow
Posted by Anonymous on
Hi, Anonymous you need to make sure you have no intake leaks by spraying some Brake Kleen, Contact Cleaner, Starting Fluid etc. around the intake manifold and seals, if the RPM's go up or down significantly then you have a leak that needs to be fixed before you can continue with the carburetor adjustment.
The engine should be at operating temperature with the enrichener off to set the idle between 950-1050 rpm. Turn the idle skrew clockwise to increase the idle speed and counterclockwise to decrease the idle speed. If you have access to your air fuel mixture skrew you may turn it as well, if not there is a video below on how to gain access, make sure you start with clean or new spark plugs. Gently turn the air fuel mixture skrew clockwise until it starts to bottom out "STOP" do not over tighten as it will damage the taper on the end, now back the skrew out 1-1/2 full turns to establish a starting point start the engine and check the idle rpm's and turn the idle skrew accordingly for 950-1050 rpm if necessary, turn the air fuel mixture skrew 1/4 turn at a time and let the engine settle for about 10 seconds, turn the skrew clockwise for a leaner mixture and counterclockwise for a richer mixture, you are seeking the highest rpm your air fuel mixture skrew can acquire without going past 3 full turns from bottom then resetting the idle skrew back down to 950-1050 rpm If you can not detect any rpm change and can not stall the engine by turning the air-fuel mixture skrew all the way in then your pilot/low-speed jet is too big and needs to be replaced with the next size smaller. Final adjustment should be made with a clean air filter mounted to the carburetor.
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Adjusting the Mixture Screws
Honda Shadow VT700C Running Lean Fix Pilot Jet Needle Shim
Posted on Jul 13, 2017
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Posted on Jan 02, 2017
You should have disc brakes??? They are not adjustable.
It is common for a caliper piston to freeze up or become corroded and bind up so it will not move freely.
Posted on Aug 12, 2009
Well if its running good and you don't here any out of the ordinary rattling I wouldn't worry about it until at least 25,000-30,000 miles on the bike so probabley in another 10,000 miles or so have the valves adjusted unless you hear any unordinary rattling noises sooner then go in at that point and have them adjusted.
Posted on Apr 21, 2010
SOURCE: How do you adjust the
On the left side of the motorcycle under the carburetors is a black plastic knob on the end of a cable. If you turn the knob clockwise it will raise the idle speed of both carburetors at the same time. If the idle is too fast, turn the knob counterclockwise to lower the idle speed.
Posted on May 18, 2011
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