Question about RTO 200cc Full Size Four Wheeler ATV

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I have a 2001 yamaha kodiak400 it has fire and gas i adjusted the valves to right ajustment but still no go can you help me with my troubles thank you ed

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Check the compression?

Posted on Mar 12, 2014

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Posted on Jan 02, 2017

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250 trail boss high idle cant ajust


If the screw(s) on the carb make no difference... the throttle cable may need to have slack added... IF there is an adjustment at the handlebar... start there and give it slack -- The throttle should be able to move without revving the engine.... if there is not slack or play... adjust the cable until there is.- the next adjustment is at the top of the carb, where the cable goes in -- ....If this does not help, you may have pinched the throttle cable, or have an air leak or the intake valves are too tight-(usually manifest in a "slow to idle" - "run away idle" situation) .....

Aug 22, 2017 | ATVs

1 Answer

How to ajust the timing chain on Yamaha big bear motor a tv


You will need to find the timing marks and have the firing specifications to line it up. Most timing marks have the Top Dead Center position marked with a large raised triangle mark. Take out the spark plugs and use a pencil with an eraser to determine (by feel) when the piston raises all the way up the cylinder... this is the TDC position. Line up the chain so that the TDC triangle corresponds to the actual piston travel inside the cylinder. Once you have them aligned, dial back the timing the few degrees specified in the manual. Put the plugs back in and fire it up. It it sounds "off" then repeat the process, something wasn't aligned correctly.

Mar 06, 2015 | ATVs

1 Answer

My hi bird 250 cc ATV getting fire and gas but want start whats wrong with it.


maybe not enough compression or timing is off airfilter clogged or needs valve adjustment

Feb 04, 2015 | ATVs

1 Answer

I have a Yamaha Bayou 230cc And it wont start.


Check your spark plug to see if it is fouled out see if it is dirty with carbon deposits white discolored or tan looking also check to see if the plugs are wet with gas or oil if everything looks good and you don't smell a high content of gas the next thing you could do is compression check and or check intake valves

Jan 27, 2015 | ATVs

1 Answer

'92 yamaha timberwolf valve adjustment


Here's the info you're looking for.

1992-1998 Yamaha Timberwolf 2WD and 4WD
Intake: 0.05 - 0.09 mm (0.002 ~ 0.004 in)
Exhaust: 0.11 - 0.15 mm (0.004 ~ 0.006 in)

Jun 20, 2014 | RTO 200cc Full Size Four Wheeler ATV

1 Answer

I got a 95 big bear and i got a problem with a rough idle and back fires


If it's been sitting around for a while it could be the idle jet has a little craip in it (it don't take much) but if it's spitting fuel out then I would make sure the float levels aren't sticking.

Apr 04, 2017 | Yamaha 2005 Big Bear 400 4x4

1 Answer

I put a 102mm piston on it with 11:1 compression and now when you try to start its hard to turn over. Ive put a new starter bigger battery and checked all wiring connections but nothing has helped....


STOP TRYING TO START THIS ATV!!!

..Sounds like the valves are hitting the piston!!

Did you/your mechanic check the valve to piston clearance at max valve lift/PISTON HEIGHT??..you need at least .035" (.89mm) on the intake and .060" (1.5mm) on the exhaust.- MINIMUM - . THIS IS CRITICAL!!!

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.....
11:1 is a pretty tall compression ratio. Are you racing this atv?.. one thing you will find out is that you NEED TO RUN HI-OCTANE fuel..NOT airplane fuel either (its got antifreeze and other additives you so not want to deal with)..11:1 might require a 110 OCTANE race gas to get it to run right... make SURE the timing is RIGHT!!..with this much compression the right fuel, timing, valve clearance, cam timing, etc, MUST be perfect!!!

Sep 14, 2017 | Yamaha 2005 Rhino 660 Auto 4x4

2 Answers

Hello my 2001 Honda 350 fourtrax has a hard time starting up. I'll have the choke on and it will take from 4-6 tries to start it. I've been noticing this for about a couple of months now. Now the cold...


There is an on line forum for the Honda 350 fourtrax. They discuss this problem at great length and recommend everything from using the choke and primer, replacing the spark plug with a hotter one for cold weather, to adjusting the valves to factory specifications, and rebuilding the carburetor.
https://atvconnection.com/forums/honda/28277-honda-rancher-not-starting-cold.html Hope that will be helpful.

Oct 06, 2017 | Honda 2007 FourTrax Foreman 4x4

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