Ok, I got instructions on how to do a compression check from my previous posts, but I still have a few questions which might seem obvious but I want to make sure. Here are the instructions <br /><br />Purchase a compression guage at most any auto parts store or Sears (about $25-$35). Put on the muffs, start motor and run at idle until warm. Shut off the motor, remove both plugs and ground them to the power head. Rig jumper wire across neutral interlock switch. Place throttle in WOT postion. Screw compression gauge into cylinder #1. Crank engine about 4-5 complete revolutions until max compression reading is obtained. Write down the number. Screw compression guage into #2 cylinder and crank 4-5 revolutions. Write down the number. Compression should be at least 110 psi and no more than 10% difference between cylinders. <br /><br />Question 1: how do I ground spark plug wires to power head. By taping the wire glove to the power head?<br /><br />Question 2: If I am removing the sparks plugs, do I still crank the engine by using the key in the ignition? I never tired, so I want to cover bases.<br /><br />Question 3: Rig jumper wire across neutral interlock switch. How do I do this? The service manual does not mention this part.