Yanmar Ym1500 Tractor Manuals
Look on Ebay for I&T Yanmar YM1 Shop Manual 135 135D 155 155D 195. (the same manual also covers the larger Yanmars). About $2530. I don't know if this is the ideal first choice for a shop manual, for your YM1500. It is a good first choice for the US-version Yanmars from the same era so it will give you some idea of Yanmar's designs and specifications for similar models. These are all intentionally simple tractors designed to be owner-maintained with simple tools.
Hopefully someone can post a reference to something specific to YM1500. There was a file offered here by an owner a while back that was mostly a collection of TBN posts. I think simply searching the forum on 'YM1500' will return the same information, and show everything you need to get started - filter #s etc. The original Yanmar part number for the oil filter is 10. A good, inexpensive and locally available cross-referenced filter is the Purolator L14459. There are also other cross-referenced filters available such as NAPA/WIX or you can order through one of the parts suppliers for Yanmar grey market tractors. I usually search around for a coupon code and place an online order for Advance Auto Parts and choose local store pickup.
Yanmar 1500 Tractor Manual
The coupon (usually a specific% off) will typically get me in the area of $3.00 or less for the filter. It seems that most of us tend to stick with a 15W40 diesel oil such as Shell Rotella T. 1988 mercruiser 454. The Yanmar part number for the air filter is 10. It can be cross-referenced, but Hoye seems to have the best filter to properly fit the air cleaner housing. The hydraulic 'filter' is a mesh screen behind two triangular plates (one of which is the suction line) at the bottom, fwd portion of the transmission housing.
Most of us typically use a universal tractor fluid (transmission/hydraulic oil) that meets/exceeds JD-303 specification and can be picked up at places like Co, Wal-Mart or your local tractor dealer. Standard 80W90 gear oil works well in the front axle.
The 'ThermoSiphon' cooling system does NOT have a water pump and the wrong coolant mixture can cause cooling problems. It is recommended to use no more than a 25% antifreeze to 75% water as the coolant ratio. Hope that these tidbits help a little. Sorry about the ad. It was removed so it may have sold. It was posted from Georgia tractor co.
If you didn't get to check with them. He's big on UTDA. So I would think there would be a Manual Esp. For Safety reasons. Your Brakes for example if there would become a problem.
If you run out of Adj. On the linkage just remove the Brake cover and check for Rust est. Most of the time the Shoe can be Reversed and will last for Yrs. Before having to replace them.
Hoye or Fredrick should have them if needed.