Low Power & Smoke - Lawnboy

[ecarecar]

I have a Lawnboy model 6872 or maybe 7268.

Anyway, it was running fine, then I noticed that the power went down and it started smoking.

After it cooled, I started it and it ran more or less normally then after

4 or 5 minutes starts smoking with low power.

Compression seems normal.

Anyone know what happened or how I could figure out what happened?

[Srgnt Billko]

Is it possible for you to check the compression when it is hot ? Something must change as it heats up. Do you have to keep adding oil ?

Sarge

[ds549]

if its a 2 stroke , exhuast may be clogged up.

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[Stubby]

Or just the airfins could be clogged with leaves and grass.

[Eggs Zachtly]

Why would it be white? Does it have a radiator?

[ecarecar]

The whole story is that I got lazy and took it to a shop last winter to have something done. I got it back and started using it. A few weeks later it started the gradual process of smoking and losing power after it warmed up. It got progressively worse.

I temporarily got unlazy and started to take the carburetor off when I noticed the bolts/screws holding it on were loose. I tightened them and everything seems to be fine.

The only confusing thing is that I would have expected the mixture to have gotten lean not rich.

[Srgnt Billko]

Thanks for coming back and explaining. Nothing worse than to be left hanging.