813 walbro good or bad upgrade

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The 813 is the same as the 990 but with an accelerator pump.

Either one is a great upgrade...most say you do not need the pump.

I have read of a recurring problem with the 813 accelerator shaft leaking but most should last just fine.

Here's a link Deluge just posted...

Walbro WT-990 high-performance carburetor

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