Feedback Score: 0 reviews
Join Date: Jan 2010
Location: Ontario, Canada
Albie...I agree with the advice given as well, and believe that you won't be able to correct the problem without removing the carbs and more specifically cleaning the pilot jets. The pilots have such a fine passage way for the fuel to flow through that it only takes a grain of sand or film of residue to clog them completely. When that happens, the quad won't start or idle very well because the pilots allow the necessary fuel flow during the low speed circuit and also continue to provide fuel when you back off the throttle.
If it were me I would do the following before purchasing it..
1) Confirm it's never been sunk or injested water. If it has, walk away or reflect a rebuild including crank, rods etc in your offer/price.
2) Remove the front and rear differential fill caps to ensure the lube is clean, not contaminated or watered down like chocolate milk.
3) Negotiate a better price because of the required work.
4) Purchase it and do the following..
5) Remove all of the existing fuel from tank, carbs etc.
6) Remove the carbs
7) Remove the pilot screw adjustment caps/plugs by drilling a small hole through the cap and prying the aluminum plug out. Be careful not to drill any deeper than just through the thin plug or you'll damage the slotted head of the pilot adjustment screw.
8) Remove the float bowls and ensure that everything is spotless, especially the pilots. You'll need to remove the pilots and hold them up to the light in order to verify the passage is clear. I would suggest you do the same with the main jets. The mains are less likely to be clogged because the holes are significantly larger than the passage way of the pilots.
9) Clean the choke plungers while you have everything apart because they've been known to stick which will have it's own set of issues, e.g.too rich or to lean.
10) Shim the needles and adjust the pilot adjustment screws as per reelnative's advice, e.g.screw them in until they seat and then back them out about 2 1/4 to 2 1/2 turns.
11) If it were me, I would inspect the valve clearance while the carbs off, but only do this if you're confident with the process because it's fairly unlikely that you'll need to actually adjust them. If you're not familiar with the process and end up adjusting them out of spec you'll have bigger problems.
12) Put it all back together, fill it with fresh gas and go have some fun: )
Hope this helps.
2007 750 Camo Brute, 27" Mudlite XTR's/ Black 14" SS108's, 1" spacers, Diamond G Tie Rods, Gibson Steering Stabilizer, Elka's, Richochet skids, Snorkels, Dyna FS CDI, Twin Air, Full Muzzy, Gaffrig Wtr.- Prf. Temp Gauge, Ext. Oil Cooler w/braided lines, VFJ primary mod., XT 25 Warn.