I am in the process of building a hotsaw out of this. It is Makita's biggest saw now that they
stopped making the 7901 so the first step is to outfit it with a Dolmar 7900 piston and cylinder.
next I ported it and built a pipe.
CLICK HERE FOR LATEST MOVIE

CLICK HERE TO SEE MOVIE

I converted it back to a firewood cutting saw for everyday use by putting the stock muffler back on it and installing the 84cc big bore kit
and heavy duty air filter kit. Below is a movie of me falling an Elm tree and cutting it up with this configuration.

CLICK HERE TO SEE MOVIE



 

Here it is after I made my first pipe.

CLICK HERE FOR MOVIE