s10rollnlow
New Member
Hey everyone, I just picked up a couple of older Quicksilver MX ultralights and am in the the process of building one really nice one out of the two. I have replaced all the hardware, swapped out the old foot launch axle with the new style semi straight one with rear brake kit and a bunch other cool stuff. Now I'm getting ready to fire up the engine to see how well she runs, but I have a problem. I dont know what year my rotax 440 engine is or even what it came out of. I need to replace the plugs and I dont want to just replace with the same ones that are in it just for the simple fact they could be the wrong ones. Here is all the info on the vin tag. MTR N 2950335 BORE 2X67,5 STROKE 61MM 436.6CC