just replaced the engine on my D170. Now it will not start. New engine is the proper replacement engine for this lawn tractor. All connection fit exactly. I'm at a loss for what is wrong.
I installed a new solenoid, and decided to replace the relay also. Now the new engine starts right up and runs well. Thanks for the replies.Start with the fuse
Good chance that you managed to short something while swapping the engines over .
Then check that the ground strap has been replaced .and is done up tight