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Thank you, will let you know how it goes

Smokes like a son of a gun

I need to set my fuel adjustment screw back to factory since i can see its been tampered with. Anyone know this procedure or can steer me in right direction? TIA. 2004 RTV 900

The seals under the the springs were still there and intact, it was the cap on very top of the valve that the rocker arm rides on to open and close valves. Im just waiting on kubota to call when parts come in. In the mean time is there any literature about setting the fuel adjustment back to...

No.

Ok long time since i touched the machine. Finally pulled the head and no visible problems with gasket or head. BUT i did just now see that there is a new valve train hold down piece where the bolts goes through, then realized that there is 1 out of 6 valve caps which the rocker arm rides on top...

Sorry been awhile i ended up getting new injectors but im still experiencing the same issues . Entire fuel system has been gone through. Having a mechanic take a look now.

Having a mechanic check valve clearances and a compression test. Will report results. I think I’ve done everything I trust myself doing without wasting money and time.

Whats the beat way to test engine underload

I pulled IP and all spring and hardware are intact and good pressure on all pistons. There are 6 shims there. I checked all valves (intake valves had play while exhaust valves were beginning to rise).

I checked transmission fluid levels and it doesn’t even read on the dipstick but I can see it in there. Is there a good chance this has something to do with it. It blows Black smoke while in neutral on starts and just reving it. I tried turning the screw in and out it didn’t change the...

Like I said the machine is so loud compared to our other RTV we have, like really loud it doesn’t sound mechanically bad it’s just a loud engine.

Could the valves be out of adjustment not pulling in enough air just trying to brainstorm. Or low compression?

I haven't gotten a chance to have IP and injectors tested yet but idk why i failed to mention that there was a good amount of water in the fuel tank and some sludgy material in fuel filter. I Removed and thoroughly leaned tank and lines. Before testing it last...

I did check brakes and they are all free. I removed the injectors and the back injector had a build up of white corrosion like substance around the smooth part above copper gasket. Im thinking it might have something to do with IP so I guess ill remove that and take everything at once. I can see...

Im taking injectors to be tested next week.

Yea every filter on machine has been replaced. I adjusted the fuel screw with the tamper proof cover.

All air ways are clear and cleaned including air filters. I adjusted fuel screw in and out made no difference still excessive black smoke. I will try that test next time i go to shop.

A couple weeks back I picked up a used RTV 900, 920 hours on it. Its also much louder than my other RTV 900 and puffs black smoke upon start up and also when drive around. I searched these forums for a week or so and have done everything I’ve read and could think of. All new filters, oil...