New to atvs

[jessewr1981]

Hello. I am new to atvs. Bought a king quad 300, it needs a little work. Carb needs to get adjusted. 

[Cadencewildbeast]

Same here bud.  Just picked up my first.  A Honda fourtrex 300.  Been sitting out in the weather for prob a decade.  

Edited January 9, 2022 by Cadencewildbeast

[jessewr1981]

Looks like a good project

Mine sat outside for 2 years. Right before it got parked, the previous owner put new platics, new under coating, new lights, new decals,  and a new carb.

Ive changed the oil, oil filter, completely cleaned out the gas tank and petcock and replaced the gas with 94 octane, new spark plug and checked for air leaks. 

He says the quad needs the carb air fuel screw adjusted to the 2 1/2 turns. I am a beginner to all of these things, so im having some issues figuring it all out.

It bogs down when you press the throttle at low rpms. Spark plug gets sooty black. (Carbon build up?  - running rich)

I wish i knew what i was doing lol

[Krazo]

new here as well.  I got an 05 zuki king quad 700.  came off a farm where it was used to check cattle for last 10 years.  prior to that not sure how much use it got but couldnt have been much.  everything seems in good shape.  I parked it in the garage and been trying to find the time to do a tune up; air filter, oil & filter change, spark plug.  oh it needs a new battery too.  got all this picked up at the local oreillys but just cant find time to work on it yet.  after this stuff, i'd like to tackle the differentials and brakes.  previous owner didnt do anything besides change the oil yearly.  

[jessewr1981]

Right on. An 05 suzuki king quad 700 here in vancouver canads would be around $5000. Whatd you pay if you dont mind me asking?

I have done all the fluids in my 91 king quad, now going to be tackling all new front brakes this weekend. Waiting for a new oil seal and rear bearing to come in the mail as well. 

[Krazo]

it came locally, only 25 min away.  listed on fb marketplace for 3500, i paid 3200.  came with owners manual and original tool kit.  prev owner said he bought from a friend of his who ran an auction co and they picked up from someone cleaning out everything.  something like 3500 miles.  i'm excited to ride, never really had one before.  

[jessewr1981]

I want to get mine running good before may. Ive only rode a atv twice. 

[Ramm_It_Inn]

may gives ypu plenty of time to get it going.  my only advice is dont just throw money at it. listen to others who have had similar problems and learn to actually diagnose its issues rather than just swap parts. i recommend oem carb rebuild kits only.

[Mech]

It's definitely best to diagnose before fitting parts.

Adjusting the carby on suzukis has always been difficult, and I've tried three different tools to do the job. I've got a good one now.. Kiwi engineering..

 

[jessewr1981]

Wished you lived closer mech, i had the quad running mint, and then replaced the old crappy outlet tube, now it bogs down again when you slowly push on the gas. The carb is one pain in the as* to adjust... im almost positive the float level and air fuel isnt adjusted properly. I had it running like new 3 weeks ago... grrrrr

Just now, jessewr1981 said:

Wished you lived closer mech, i had the quad running mint, and then replaced the old crappy outlet tube, now it bogs down again when you slowly push on the gas. The carb is one pain in the as* to adjust... im almost positive the float level and air fuel isnt adjusted properly. I had it running like new 3 weeks ago... grrrrr

Forgot to say as well, the old air outlet tube was barely hanging on, and more then a half in shorter then the oem one. So i replaced it, now she runs like dogsh!t again

[Mech]

That tool's made from bits out of an old printer..

It's probably a good idea to strip the carby again and replace the rubber O rings on the float needle's seat and the main jet holder. Blow through every drilling to check they are clean and so you know where they go. Blow all the jets out, check the float levels right. Check the diaphragm's not torn. Check the rubber inlet manifold isn't torn. Check all the rubber hoses are on the right places.  Then the standard setting for the idle mixture as per the manual should get it to go, then you adjust the idle mixture and it should respond.

When you say "outlet tube", do you mean the outlet of the carb ? So the rubber fitting connecting the carb to the engine ?

That's called an inlet manifold.

[jessewr1981]

I had this running so nice like 3 weeks ago and havent touched it since. Today i took the old  outlet tube (from the carb to the air box) off, put the new one on, and now its lagging again when you press the gas slowly. Was not doing that with the old tube that was barely on. 

I assume its getting the proper air now. Carb was fully rebuilt with oem parts 1 year ago by kawasaki (guy did this before i bought it).. ive taken most of it apart and it looks brand new. 

 

[Mech]

Well if it's started since you fitted a new air inlet pipe, it sounds like the aircleaner or inlet piping has a blockage.

[jessewr1981]

3 hours ago, Mech said:

Well if it's started since you fitted a new air inlet pipe, it sounds like the aircleaner or inlet piping has a blockage.

No, its always started and idles fine.... 

When you slowly press on the gas now it bogs down and wants to stall

[Mech]

Are you sure the choke plunger's going right back ? Twisted cable maybe.