I opened up and matched the muffler base to the exhaust port since it was very slightly blocking the port on one side. or requests on how to improve this sites accessibilty for all users. JavaScript is disabled. The spark arrestor typically consists of a series of fine steel wire mesh screens, which are designed to block the passage of sparks and embers, while allowing the escape of smoke. 5+ Ways To Woods Port A Chainsaw For Power Gain (Up to 25%). The most common way is to enlarge the exhaust pipe/path with a grinder, drill, or any other machine. An example of data being processed may be a unique identifier stored in a cookie. Ships from and sold by PARTMART. Sounds as if it has compression, but have not looked at piston. Ultimately, to get an accurate estimate of the installation cost for a spark arrestor, its best to contact a qualified professional for a quote. the first thing I do to them, besides adjusting the handle, is removing the spark arrester screen. You can find them on local hardware store. Reply #1 on: December 23, 2010, 08:46:40 AM . Thats one of the main reasons professional chainsaw operators prefer gas chainsaws to electric and battery-operated chainsaws. Once the product has had time to do its job, remove any loose particles with a dry cloth and allow the spark arrestor to completely dry out before placing it back into your engine. Active since 1995, Hearth.com is THE place on the internet for free information and advice about wood stoves, pellet stoves and other energy saving equipment. Removing the spark arrestor relieves back pressure in the exhaust so the engine can move more air through the exhaust. 01 - Stihl Chainsaw Spark Arrestor. I believe so. FREE delivery Monday, March 6 if you spend $25 on items shipped by Amazon. The effect on exhaust flow is from 0 to 40%. sgt7546. if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[320,50],'remodelormove_com-box-3','ezslot_4',173,'0','0'])};__ez_fad_position('div-gpt-ad-remodelormove_com-box-3-0');if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[320,50],'remodelormove_com-box-3','ezslot_5',173,'0','1'])};__ez_fad_position('div-gpt-ad-remodelormove_com-box-3-0_1');.box-3-multi-173{border:none!important;display:block!important;float:none!important;line-height:0;margin-bottom:7px!important;margin-left:auto!important;margin-right:auto!important;margin-top:7px!important;max-width:100%!important;min-height:50px;padding:0;text-align:center!important}The spark arrestor on a Stihl chainsaw is typically located on the muffler near the exhaust port. So it will need to be richened up. The other risk associated with removing spark arrestors is getting crap inside the muffler/cylinder. I now experience the Horsepower is increased a bit and the saw run leaner than it did earlier. GOOD AS NEW! //-->,