ORIGINAL:
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I had the problem awhile back, what bI did to correct it-sold the engine and went out and bought a os46 ax no more problems
Bob A
I tore down an OS46AX for a friend to replace the bearings and the piston/sleeve because the engine had low compression. Price of OS bearings, piston, and sleeve are more than the complete engine. No thank you, I'll stick with Evolution.
OS bearings, piston, sleeve $135
Evolution bearings, piston, sleeve $45
Tunder Tiger bearings, piston, sleeve $54