Author Topic: Dolmar PS-421 mods  (Read 1130 times)

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Offline Nathaniel Vansickle

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Re: Dolmar PS-421 mods
« Reply #10 on: July 14, 2014, 12:13:37 pm »
On my saw I opened up the muffler a bit more and it seemed to run better with the larger opening but to do it over again I would stick with the original mm. larger opening is just a slight increase in power and a drastic increase in noise. I enlarged the opening more and clamped the muffler and cover in the vise. Heated the deflector with a torch and used to ballpein hammers to form the deflector larger giving more area to the exhaust outlet. The original piece I removed is there to show just how much larger the opening is from what I normally do
5105H and 6400H in stock

Performance Outdoor Equipment
performanceoutdoorequipment.com
Dolmar, Echo, Jonsered


 

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