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Recently purchased a second G1900 with 950 hrs for spare parts. Unit looks Ok but needed a few things before using. Now using it for mowing along with my original G1900 purchase. RC54-20G deck is in good condition. But the front yoke is frozen on the engine PTO input shaft. The plastic...

Received Kubota parts to finish installing the D733 engine Friday. Had to do several "work-a-rounds" that required more time than I anticipated. Still have one more dealing with the transmission drive shaft universal joint "on the engine end". The joint is hitting the "floor" sheet metal...

Appreciate your response. Have the engine installed. Still have the wiring and a few odds/end to complete. Hope to start engine by Tuesday this week. Have other "stuff" for tomorrow. Charlie

North Idaho Wolfman, I really appreciate your help/time. I have "run into" another concern with the recently purchased D722. I am in the process of changing manifolds between the two D722's this afternoon. The intake manifold seems to have had moisture in it sometime back (is not recent). The...

Appreciate your response! Great help! Hope to install/crank engine this coming week.

Picked up the used D722 engine today. Somewhat different "setup" than the G1900 engine. In the process of changing mounting brackets, flywheel, front pulley, etc. This engine has a hydraulic pump that appears to be connected to the injector cam. Pump is mounted to the end of the injection...

A lot of snow here Tue and Wed. Just getting back to the engine this afternoon. Just completed a more thorough "check" on the engine block. Two of the three cylinders (#2 & #3) definitely have issues that would cause compression loss. Engine seems to have recently been "overhauled" and it was...

North Idaho Wolfman, Last week, I attempted to perform a compression check. Ordered a compression kit and also ordered an adapter for a D722 glow plug hole. Adapter did not "fit" the compression gauge fitting and leaked when testing. With the glow plug hole area clean, I attempted a check with...

Cold wet weather is forecast here for most of the week. Will pull cover and check the blow by when weather permits. Don't have access to a compression kit just now. The cheaper ones seem to have pressure gauge issues. Looking for a cheaper kit that would work properly. A good used one seems to...

North Idaho Wolfman, Started the Kubota this morning. Yes, it does have vapor coming out of the blow by hose. Volume increases with engine speed. It's there even when in the "engine smooth range". Don't remember this much vapor last summer. About 45 degf here this AM. Thanks, Charlie

The previous owner indicated the fuel lines (and filter) are new from the injector to the fuel tank along with a new fuel pump. Assumed he cleaned the tank and lines when installing the new parts. Indicated he had all of the work done with the help of a dealer he had connections with (family...

Adjusted the valves to 0.006" this afternoon. Found two valves were pretty close to 0.006" and the other four were greater than 0.007" (.007 gauge was very loose when inserting). None were below 0.006". Engine started after several attempts (temp around 55 degf). Runs somewhat better now. The...

SteveF, Appreciate your response. Purchased it in Jul-13. Have had running issues since I've owned it. Just much worse in winter weather. Have not done a compression test (no test kit) due to how good the engine runs at greater than 50% throttle. Timing is done with the shims, I think(????)...

Appreciate your response!! Can probably try that this week end. Snowing now @ 19 deg f. Supposed to be around 50 this weekend. Charlie

G1900 D722 engine hard starting and smoke/missing at low rpm and top rpm. Runs fine at 50 % to about 80%. No smoke, runs smooth. Have removed injection pump and injectors. Took to a certified fuel injector service shop. They cleaned and checked/calibrated pump and injectors. Did "minor...

Have a G1900 with a RC54-20G mower deck in need of repair. Rusted-out in front of the deck housing. Anyone with a fix other than spending "big bucks" for a new housing? Any other decks that would fit/work (maybe with minor mods) on a G1900? Any help would be greatly appreciated. Charlie

kc8fbl, Followed your suggestion. Had to turn the screw (bolt) a little more than anticipated to increase idle rpm's. But, it idles a "whole lot better" now! Solved my problem!! Appreciate all replies. Good site!!!

Yes, it shakes the unit quite a bit at idle. My biggest concern! kuboman, I think the idle is too low. What is needed to check the idle? When the ambient temperature is cool (50 deg f), I think it is miss firing. Sounds like our older IH diesel tractor (3 cylinder) when starting in cold weather...

My 1st Kubota. A G1900 with 1340 hrs. Engine runs great from about 1/3 throttle to full throttle movement. Unit mows great and seems to have enough power for the 54" mower. I crank the engine with the throttle (lever) at minimum. It will fire up within 3 - 5 seconds. But it idles really rough...