Fits: YM135 Tractor (Diesel) (2 Wheel Drive 2T73A and 2TR13A Engine) | YM135D Tractor (Diesel) (4 Wheel Drive 2T73A and 2TR13A Engine) | YM155 Tractor (Diesel) (2 Wheel Drive 2T73A and 2TR13A Engine) | YM155D Tractor (Diesel) (4 Wheel Drive 2T73A and 2TR13A Engine). This Yanmar model YM155 Diesel Tractor Service Manual (2 Wheel Drive 2T73A and 2TR13A Engine) is a digitally enhanced reproduction of the original manufacturer-issued Shop Manual. It has 166 pages of the best technical information and instruction for your Tractor. Written in the language of a mechanic, it was initially sent to the dealers service department to provide enough detail for major repairs and complete overhauls. It discusses how to correctly take apart your YM155 , repair it, and put it back together. This is an essential tool if you are doing or planning on undertaking serious repairs or a full restoration. Even if you already own an original Service Manual thats in good shape, you will find our value-added content, such as post-publishing updates, corrections, serial number info and additional machine detail extremely useful.