The
L4150 is one of Kubota's best tractors. The asking price may be a great deal - does it have 4wd? Hydraulic Shuttle? Any remotes? FEL? - Which model? Also, it would be good to call Kubota in Columbus with the serial number - they can tell you when it was first sold at retail - I didn't know any
L4150's were still unsold in 1995 - the next models (
L4350,
L4850 and
L5450) started in 1992 I think. But I may be wrong. (RaT ??)
Most of the
L4150's were on Ag rubber - Bridgestones - and the tires are large, making the tractor stand tall. It is a little less convenient to jump onto and it may just seem too big to the present owner. If he had a small tractor before, this one would seem pretty hostile to the lawn.
A
L4150 has a 5-cylinder engine, still used today in the
M4900/
M5700 I believe. The 4150 model number in those days corresponded to the pto horsepower - so it has a lot of grunt. I've been singing the praises of this Kubota chassis (L3) series forever here.
While they are extremely well-built and durable, it is always possible this one has some issues.
There are several things you can do to check it out. (1) Does the engine sound smooth (no knocks on cold start?) - a small amount of blue smoke is normal for these - but internal knocking is not. Tell the owner you want to come over sometime when the tractor has been shut off for 12-18 hours and start it up. If you get there and it is even slightly warm, he's not meeting your request. With the lever set to lowest speed, it should start and idle smoothly - no skips, no vibration. A little wisp of blue smoke may persist for a few minutes - not a problem. A lot of blue smoke is a problem - even if it eventually clears up, it's an indicator of worn rings.
(2) If the hours are original, the tires should be too. They may be getting worn, but should still be decent. If they are badly worn or have been replaced, maybe there are more hours on it - or harder hours. It is completely reasonable to go to the former dealer and ask about it - how was it used by the owner before - farm, landscaper, hobby vineyard of a webmaster ?
(3) I always suggest taking the air filter apart to have a look. There is an outer element, inner element, and both are cleanable. If either is broken or missing, or if there are any bad gaskets or housing seals, that's a dead give away of poor maintenance and possible grit-eating engine. (Deal breaker). Pull the dipstick on the main gear case - oil should look clean - maybe not transparent but should have NO visible contamination.
(4) sometimes you can tell what kind of former life a tractor has had by looking at the very bottom - underneath the gear housings and engine - is the paint beat up? It might be shiny and clean, indicating a history of no leaks and light use.
If you can post whether it has the hydraulic shuttle I can suggest other things to check.
Also if you are afraid this one might get away if you wait too long, maybe you could suggest giving him a deposit with the understanding that the deal is contingent on obtaining satisfactory answers to the questions you have. (sorta like a home inspection)
Good luck and have fun - you may be on the trail of a real keeper.
Dick B