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View Full Version : Z400 smokes on initial start-up


sosaysmorvant
07-22-2009, 09:41 PM
My new Z400 (37hrs) threw a big puff of smoke upon initial start-up two days in a row. Is this normal or a sign of something wrong?

Oil level and hydro levels were within range.

The Toro Company
07-23-2009, 11:35 AM
My new Z400 (37hrs) threw a big puff of smoke upon initial start-up two days in a row. Is this normal or a sign of something wrong?

Oil level and hydro levels were within range.

Sosaysmorvant -

Upon a cold start up the engine is usually choked and the choke procedure sends more fuel into the cylinder to start the engine. This creates a richer mixture and creates that initial larger puff of smoke. It will be a black colored smoke and it will only last a few seconds and then will dissipate to the normal amount of engine smoke.

- The Toro Company