Question about Yamaha 2004 Blaster Base

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How to adjust air flow screw on a yamaha blaster

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1 Answer

My 2000 Yamaha blaster 200 runs good at half throttle but bogs after half throttle


check for air leaks around the air filter and/or clean the carb

Dec 09, 2016 | ATVs

1 Answer

My 2005 Yamaha Blaster will crank and idle for 1/2 hour or a little more then it will just stalls try and restart it will not start it appears that after it cools down it will start up again


Check that the breather in the fuel cap is still working. The breather has a hose with a one way valve.
You should be able to blow air in but not out. I hope that you are moving during that 1/2 hour as these motors require air flow for cooling.

Apr 14, 2015 | Yamaha 2005 Blaster Base

1 Answer

I just bought a mud blaster 110cc quad for my son, why does it start then 2 min later stop even with feathering the throttle?


#1 sounds like a fuel delivery system issue. Make sure the fuel tank flows freely to the carb. (remove the fuel line from the carb--from the gas tank and turn on the petcock--gas should flow freely) The needle and seat may need to be cleaned or replaced, this controls the flow of gas into the float bowl of the carb.(remove the drain screw from the bottom of the carb (with everything properly assembled- petcock on)..gas should continually flow through the bottom of the carb --10-15 seconds of continual gas flow will make sure its flowing properly! Both of these sound like a solution to your problem.

Jun 22, 2014 | ATVs

1 Answer

Pilot air screw adjustment 03 raptor


Start at 1.5 turns out from fully closed.

May 28, 2014 | ATVs

1 Answer

Howdy.I have a 2005 yamaha blaster.Low hours,good spark and freesh fuel.Fired it up the other day and was fine for about 5 min.Then it seemed to loose power then died.I checked fo fuel and spark , bot


the crankcase is filled with fuel from a leaking carburetor float (would be LOTSSSSS of smoke) OR Bad crankcase seal and its sucking in air, bad reed cage area seal, exhaust plugged up!

May 05, 2014 | Yamaha 2005 Blaster Base

1 Answer

My blaster runs good but once it gets hot it revs up and wont stop i cant stop it with the run switch or the key i block the air to turn it off i put a new plug in it it has the oil pump off i mix the gas...


Sounds like an air leak... either at the base gasket or the reed valve gasket. or the carb/reed intake boot...MAYBE THE HEAD GASKET...

...AND ... get a qualified pro to look at your carb..tell him which parts you replaced...

Aug 06, 2017 | Yamaha 2004 Blaster Base

1 Answer

Atv big bear 350 won't idle after cleaning


sounds like your mixture was leaned out because ur filter was cloged up ...making it run rich so was adjusted by screwing air screw out, now uv cleaned it, adjust it to make mixture richer by screwing back in until runs smotherly

Sep 08, 2013 | K and N Yamaha Big Bear Yfm350fw Air...

1 Answer

How do u adjust the throttle and fine tune carb also how do you know that injection pump that mixes with oil is working


a lot of people that take these apart put them back together backwards. make sure it is right. most of those carbs are not adjustable other than the jet itself. make sure your fuel tank is clean and fuel lines are clear/ fuel filters are clear or new.

Aug 15, 2013 | Yamaha 2004 Blaster Base

1 Answer

Blaster stuck on full throttle


I would check the plastic heat isolator between the carb and cylinder head for leak.

Jul 07, 2013 | Yamaha 2004 Blaster Base

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