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Archive for February 23rd, 2014

Snowblower Muffler Replacement

What with all the snow this winter, I noticed that the muffler on the snowblower was rattling around something awful; eventually, the blue fire jetting directly from the engine block got to be distracting. Come to find out the bracket attached to the top of the block had ripped free from the muffler:

The two long bolts on the right explain why this particular anomaly didn’t get an immediate repair: they were firmly jammed, deep in the block, and resisted my gentle attempts to free them. For obvious reasons, you (well, I) don’t want to break off the end of a bolt in its tapped hole…

Snowblower muffler - failed bracket

Snowblower muffler – failed bracket

So, over the course of a few weeks, I applied a dose of PB B’laster to the bolts, down deep behind the muffler where they entered the block, and gingerly wiggled the bolts back-and-forth to their ever-increasing limits of travel. Doing that every time I went into the garage guaranteed plenty of excess oil to smoke off the engine during the first few minutes, but ya gotta do what ya gotta do. Two days before the next big storm, the block finally released the bolts. Whew!

Evidently, having the bracket tear loose wasn’t a rare failure and, perhaps, the situation attracted the attention of someone in accounting who pointed out the warranty repair costs (no, our blower wasn’t in warranty), because the new muffler has a different bracket:

Snowblower muffler - new bracket design

Snowblower muffler – new bracket design

Look at all those spot welds across that huge contact patch!

Yes, I used new bolts with a generous dollop of Never-Seez on each one…

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