First – Make sure the engine is off and all the other fun stuff about safety.
Get your throttle lever where you want it on the tiller handle and make sure it feels comfortable to operate. Go ahead and get in the boat, feel it out, and then mount it on the tiller handle.
Take the actual metal throttle cable out of the plastic housing.
Route the throttle cable housing from the lever to the engine. I ran mine through the tiller handle, out the back, and around the left side of the motor. Take note of where/how you want to mount the cable to the engine. There are normally two places to do it on the engine so you two options. Pick one.
Now that you have the cable routed and you have chosen the mounting place on the engine, go ahead and secure the outer housing of the throttle cable in place. (if you loosen or tighten and screws/bolts use Loctite so they don’t rattle loose)
Now lubricate the metal throttle cable with WD-40 or white lithium grease and feed it through the housing starting from the throttle lever. You should end up with the ball end at the throttle lever. This ball end goes into the throttle lever.
Now find a 1/4 inch spacer (could be wood, rubber, anything that’s 1/4 inch thick) put it in between the lever and handle and tie the throttle lever to the tiller handle with the spacer in between the two (like you were squeezing the lever with your hand)
For this step, you may need to remove your air filter and loosen the carburetor to access this area as I did in my video. If you haven’t done this already, you need to loosen the nut on top of the throttle assembly on the motor so that it returns to idle by itself. All I did was loosen it just enough so it would spring back to idle and then I put loctite on it so it wouldn’t vibrate loose.
Next, on the engine, move the throttle that is located on the engine to full throttle (wide-open = which was all the way to the left for me). Hold it there. Now loosen the screw that the metal throttle cable goes through, feed the metal throttle cable through, and pull tight.
Put Loctite on that screw and tighten it down while you’re holding tension on the throttle cable while the engine’s throttle is at full throttle.
Aaaaand now you’re done.