How do you clean the carb

take carb carefully apart and i would recommend a carb cleaning spray that is also a water repellant. does the job well, clean all parts

check compressions 100psi or more on all cyls ! carbs balanced ? sparks on all cyls ? crank seals could be worn ! tick over 1000rpm then in gear 800rpm ish ! In water !

The most likely causes are simple:

plugged air filter
water in fuel (likely to cause trouble in all RPMs)
plugged main jet in carb
plugged fuel screen in fuel tank
faulty float setting in carb
faulty spark plug
improper timing

It's likely a carb problem if the air filter is clean and the fuel is fresh and free of water. Condensation is a good posibility (water in the fuel). I would suggest pulling the carb and inspecting the cleanliness of the fuel in the bowl for water and dirt. If you find water, dump all the fuel and start fresh. If you find dirt, give the carb a good cleaning.

Remove the water trap bowl at the bottom of the petcock, (gas valve). Is there any water or trash in the bowl? (not all bikes have a water trap bowl). Install an in-line fuel filter. Use premium gas. You will need to clean the built up varnish from the evaporated gas out of the carbs.

FOR EACH CARB > Remove the float bowl and clean the entire carb with a spray carb cleaner from the auto parts store. Wear protective goggles to avoid getting spray in your eyes. Spray into all the little airways and fittings in the carb. Remove the idle screw and the air screw on the outside throat of the carb and spray into the screw holes as well.
< < READ CLOSELY > >
Be sure to put these two screws back in the same hole they came out of. IMPORTANT > do not tighten these two screws down. Only screw these in until they LIGHTLY seat. Now turn each screw one and one half turns outward. Put the rest of the carb back together, clean the air filter and install the carb. Let the float bowl fill then start the engine.

I strongly suggest you to let the shop take care of the carbs. Cleaning can be a nightmare times four and doing the balancing and sync of the carbs sounds easier than it is. If you do the carb work yourself, then be sure you have a fire extinguisher at hand. I am serious about that.

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The problem is the carbs. Is there any water in the gas? Remove the water trap bowl at the bottom of the petcock, (gas valve). Is there any water or trash in the bowl? (not all bikes have a water trap bowl). Install an in-line fuel filter.

FOR EACH CARB > Remove the float bowl and clean the entire carb with a spray carb cleaner from the auto parts store. Wear protective goggles to avoid getting spray in your eyes. Spray into all the little airways and fittings in the carb. Remove the idle screw and the air screw on the outside throat of the carb and spray into the screw holes as well.
< < READ CLOSELY > >
Be sure to put these two screws back in the same hole they came out of. IMPORTANT > do not tighten these two screws down. Only screw these in until they LIGHTLY seat. Now turn each screw one and one half turns outward. Put the rest of the carb back together, clean the air filter and install the carb. Let the float bowl fill then start the engine.

I strongly suggest you to let the shop take care of the carbs. Cleaning can be a nightmare times four and doing the balancing and sync of the carbs sounds easier than it is. If you do the carb work yourself, then be sure you have a fire extinguisher at hand. I am serious about that.

Please rate this solution. Thanks!

Any water in the gas? Remove the water trap bowl at the bottom of the petcock, (gas valve). Any water or trash in the bowl? ( not all bikes have a water trap bowl ). Drain all the old gas from the tank. Install an in-line fuel filter. You will need to clean the built up varnish from the evaporated gas out of the carbs.

FOR EACH carb > Remove the float bowl and clean the entire carb with a spray carb cleaner from the auto parts store. Wear protective goggles to avoid getting spray in your eyes. Spray all the little airways and fittings in the carb. Remove the two screws on the outside throat of the carb and spray into the screw holes as well.
< < READ CLOSELY > >
Be sure to put these two screws back in the same hole they came out of. IMPORTANT > do not tighten these two screws down. Only screw these in until they LIGHTLY seat. Now turn each screw one and one half turns outward. Put the rest of the carb back together, clean the air filter and install the carb. Let the float bowl fill then start the engine. Balance and sync the carbs.

I strongly suggest you to let the shop take care of the carbs. Cleaning can be a nightmare times four and doing the balancing and sync of the carbs sounds easier than it is. If you do the carb work then be sure you have a fire extinguisher at hand. I am serious about that.

Please rate this solution. Thanks!

Drain the carburetors. There should be a screw on the lower side of each carb float bowl. Remove the screw then replace it after the fuel drains. Any water in the gas? Remove the water trap bowl at the bottom of the petcock, (gas valve). Any water or trash in the bowl? Drain a cup of gas from the tank. Any water or trash in the cup? Dump it, clean it and re-mount it, ( not all bikes have a water trap bowl ).

Turn the gas back on and wait a minute for the carbs to fill with gas. Install new stock NGK spark plugs and try to start the engine. If the bike doesn't start and run properly then shut off the gas and remove the carburetors from the engine.

FOR EACH CARB > Remove the float bowl and clean the entire carb with a spray carb cleaner from the auto parts store. Wear protective goggles to avoid getting spray in your eyes. Spray into all the little airways and fittings in the carb. Remove the two screws on the outside throat of the carb and spray into the screw holes as well. Don't be chincy with the carb cleaner. Use a lot. Until the idle curcuit gets un-varnished the problem will be there.
< < READ CLOSELY > >
Be sure to put these two screws back in the same hole they came out of. IMPORTANT > do not tighten these two screws down. Only screw these in until they LIGHTLY seat. Now turn each screw one and one half turns outward. Put the rest of the carb back together, clean the air filter and install the carb. Let the float bowl fill then start the engine. This process should get you back on the road.

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Go to the dealer and ask for the stock plugs for your bike. Check for spark on each of the new plugs then install the plugs.

Remove the carbs , dissemble it and clean the varnish out. Remove the petcock, ( gas valve ),water trap and clean it out. Next let one cup of gas flow into a container. Any water or rust in the bottom of the container? If any rust was in the water trap or the container then purchase an inline fuel filter to eliminate the rust getting into the carb.

If cleaning the carbs yourself does not do the trick then take it to the dealer and have them clean it and install carb kits. This should eliminate the carbs as a problem. Get a new air filter and install it.

Now you have spark, gas and air. If it still will not start it is likely that you need new crank seals. On a bike that old you may well need new crank bearings as well.

Please rate this solution. Thanks!

Go to the dealer and ask for the stock plug for your bike. Check for spark on the new plug then install the plug.

Remove the carb , dissemble it and clean the varnish out. Remove the petcock, ( gas valve ),water trap and clean it out. Next let one cup of gas flow into a container. Any water or rust in the bottom of the container? If any rust was in the water trap or the container then purchase an inline fuel filter to eliminate the rust getting into the carb.

If cleaning the carb yourself does not do the trick then take it to the dealer and have them clean it and install a carb kit. This should eliminate the carb as a problem. Get a new air filter and install it.

Now you have spark, gas and air. If it still will not start it is likely that you need new crank seals.

• Check to see that the choke is not partially on.
• Drain the carbs and clean them with B12 chemtool or any other good carb cleaner. The main jets in the carbs are probably gummed up. To clean the carbs properly they will need to be removed from the bike. Be sure to balance and synchronize the carbs when reinstalling.
• Remove and clean the petcock water trap and clean the trap of water and rust etc. If a filter screen is present clean it as well.
• Set idle speed to factory specs. Do not use gas with Ethanol.

This should fix the bog problem.