Plastic?

[samaritan]

My Stihl ms251c is about 6 yrs old, when I took it apart to replace the clutch bearing, I found it had come apart, the plastic casing broke. The replacement was metal.

 

[RedneckChainsawRepair]

I've seen the plastic housing ones here too. I prefer the metal also.

 

[Lawless]

Not uncommon to have a plastic cage. I think the issue is not many folks grease em.

 

[Lightning Performance]

I prefer the Stihl plastic ones on any saw. The metal ones will eat the crank if you tear it up or run it dry. They are plastic cages for a reason just like Stihl OE crank bearings.

 

[Captain Bruce]

I was confused with clutch bearing, but see we are truly referring to the crankshaft bearing, and yes, the plastic units do fail from being run hot and dry. Grease the replacement a plenty, and get that saw back to work.. 251's are top-shelf homeowner machines...

 

[Patrick1903]

I was confused with clutch bearing, but see we are truly referring to the crankshaft bearing, and yes, the plastic units do fail from being run hot and dry. Grease the replacement a plenty, and get that saw back to work.. 251's are top-shelf homeowner machines...

Believe he’s talking about clutch drum needle cage bearing.