NOTE: Nitro pull start units are not indestructible. Please keep the following in mind ...
1. Pull a max of 30cm using your elbow to pivot. Do not use your whole arm and shoulder. You are not trying to start a lawnmower. Failure to limit the pull to 30cm will result in a broken pull start.
2. Do not try and force past a hydraulic lock caused by over-priming. In this case, remove the glow plug and clear the excess fuel. Trying to force past a hydraulic lock will result in a broken pull start.
3. If you engine does not start after a few pulls, there is something wrong. Trying to force a dead engine will result in a broken pull start.
Please remember that a correctly primed, tuned and functioning engine should start after just a few pulls. If not, seek help from a professional service centre like DarBro RC Models