Question about 1985 Honda CB 700 SC Nighthawk

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1985 nighthawk sc 700 leaks small amount of gas from left side carb

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Is it leaking when you have it sittin strait up and down and running? If it leaking when it is not running then I would say you have a sticking fuel float.

Posted on Sep 29, 2009


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What are the front fork capacity and what oil weight should i use

front fork fluid capacities right 423cc (14.3 oz) left 429cc (14.5oz) the fluid to be used is ATF according to the Honda Shop Manual

Dec 07, 2010 | 1985 Honda CB 700 SC Nighthawk

1 Answer

Handa nighthawk 700 S starter does not ingage motor

There is a one way clutch that grabs onto a smooth cylinder on the side of a large gear inside the motor. The smooth barrel surface is damaged or chattered so the one-way clutch will not grab on the side of what Honda calls the "starting sprocket". A chain connects the starting sprocket to a smaller sprocket that has the starters spline plugged into it. The chattered surface does not allow the three small barrels of the starter clutch to grab and turn the motor over. The sprocket runs about $70 and the gasket runs about $30. This is an internal motor part so you will have to take apart the motor to get to it. If you go to you can look at the microfiche for the motor and see the parts you are looking for.

Sep 27, 2010 | 1985 Honda CB 700 SC Nighthawk

1 Answer

Evreything went dead after the gas tank cut into a wire that runs in front of the gas tank up to the ignition.

Put a piece of electrical tape on the wire or repair it as needed. Then check the fuse block and you will for sure have to replace the main fuse on the starter solenoid. Then it should start and run as before.

Sep 08, 2010 | 1985 Honda CB 700 SC Nighthawk

1 Answer

I have a 1985 nighthawk s 700 and am changing the

no need to gap them if they are new. straight out of the package is just fine. you only ever need to gap used plugs after you clean them, cause as they wear the gap gets bigger.

May 24, 2010 | 1985 Honda CB 700 SC Nighthawk

1 Answer

Only running on 3 cylinders ,plugs sparking ,carbs ok ,plug wet?

sounds like you may have burnt out one of your rings are you burning oil?

Feb 20, 2010 | 1985 Honda CB 700 SC Nighthawk

1 Answer

Bike seems as if its running on 2 cyclinders

r all the mufflers the same heat--make sure carbs r ok n gas is gitten to um--inspec plug wires n the rest of ign for wear and bad contacts--with an ohmeter n repair manual varius test can be done-sayonnara

Feb 02, 2010 | 1985 Honda CB 700 SC Nighthawk

1 Answer

Problem starting

Sounds like timing chain broke.

Sep 06, 2009 | 1985 Honda CB 700 SC Nighthawk

1 Answer

Color code for turn signal wires

Hi and welcome to FixYa,

Honda in general uses standardized wiring scheme:
  • green - common ground;
  • light blue - right turn signal;
  • orange - left turn signal.
Good luck and thank you for asking FixYa.

Aug 21, 2009 | 1985 Honda CB 700 SC Nighthawk

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