WhichPartFits.com

Chainsaw

Stihl MS 500i

2-Stroke

The Stihl MS 500i is a 79.2cc <!-- verify: stihlusa.com --> 2-stroke professional chainsaw and the first production chainsaw from any manufacturer with direct electronic fuel injection — there is no carburetor to rebuild. The maintenance profile shifts accordingly: fuel filter cleanliness is critical (injectors are contamination-sensitive), but carburetor diaphragm and needle/seat replacement are eliminated entirely. The MS 500i accepts 20" to 32" guide bars and delivers consistent power delivery in any orientation and across altitude changes. Aimed at professional loggers who want peak performance without altitude-related richening.

Spark Plug

OEM0000 400 7011(0.7mm gap)10mm thread — do not substitute BPMR7A (14mm thread)

Air Filter

OEM1144 140 4402HD2 filter; also fits MS 651, MS 661 C-M
BrandPart #

Fuel Filter

OEM0000 350 3518Orange in-tank pickup body fuel filter
BrandPart #

Recoil Starter

OEM1144 080 2100
BrandPart #

Chain

OEM(25", 3/8" pitch, .050" gauge, 84 drive links)Stock bar length; verify drive link count matches your bar

Guide Bar

OEM(25", 3/8" pitch, .050" gauge)