The warranty on your snow thrower does not cover items that have been subjected to operator abuse or negligence. To receive full value from the warranty, you should maintain your snow thrower as instructed in your owner's manual. You should check your oil level each time before you start the engine. After making sure the snow thrower is on level ground, remove the oil fill cap and wipe the dipstick cleaned. Reinsert the dipstick and screw the cap tight, wait for a few seconds, remove it and re de- oil level. If necessary, add oil until the full mark on the dipstick is reached, do not overfill.
Begin by making sure the snow throwers are on a level surface, remove the safety ignition key. Clean the area around the drained plug. Remove the oil dip stick and drain plug, and drain the oil into a suitable container. Wipe off any spilled oil from the snow thrower on engine, install the drain plug and tighten securely. Refill the engine with oil through the oil dipstick tube, pour slowly, do not overfill for approximate capacity in recommended oil type, check your owner's manual.