So the 15hp Kohler engine on my LT155 42" mulching deck died. I picked up a L110 with a 17.5HP Kohler engine yesterday. I believe the engine is the same, just a larger bore and should bolt right on. The L110's deck had rotted off so it has been stripped for steering parts, but other than that it's in great shape. Could I put my 42" mulching deck from the LT155 on it? I haven't even had time to really check out, but it seems to share a lot of the same parts.
Looks like I'll just be swapping out the engine after all. After a closer look, there are a lot of differences in the mowers parts. I'll have to modify the LT155 frame or exhaust I believe. There are a few parts I can tear off it. Then I'll sell the rest for parts.
Update: The engine swap was easy, the bolts all lined up. The entire wiring assembly also had to be swapped out. The LT155 jas a 3 position ignition, where as the L110 has a 4. There were a few other connections that had been modernized. Removing the old was easy, running the L110 wires back to the rear drive and seat, not so much. I didn't want to drop the deck, bc its it's a pain so I used a wire to fish them through. The 17.5hp muffler did not bolt up the LT155 chassis, so I threw the 15hp on there.
I used dielectric grease on all connections, poured a splash of Chemtool B-12 and Peak Octane Booster ($.64 a bottle on clearance) into fresh gas and it runs better every minute.
Next, I'll swap out the tires, steering wheel and seat if it'll bolt up.
It can be done quite easily folks.