TECH NOTES This is a Replacement Gasket Set for the O.S. 21RG and RG(P) Engines. INCLUDES: One Head gasket – This very thin brass gasket seals the gap between the cylinder head and the crankcase. One Backplate gasket – This thin paper gasket seals the gap between the backplate and the crankcase. SPECS: Head Gasket: […]

TECH NOTES This Bearing is used in the following OS Max Engines: – 40 SF – 61 RF ABC HANNO – 50 FSR-H – 46SF – FS-70 Surpass – 61 SFN-H W/6B carb – 46 SF-P – FS-91 Surpass – 61 SFN-H ABC W/6B carb – 50 FSR – FT-120II Twin – 61 RF-H – […]

This is the replacement drive washer for the FS-120 OS engine. PACKAGE INCLUDES: 1- Drive washer (aluminum) 1- Woodruff key SPECS: Diameter face: (34mm) Engine side diameter: (31mm) Inside diameter: (12mm) Width: (14mm) approximately 5/8″ sek/3-31-94   BOX DIMENSIONS: 2.13″ W. X .63″ H. X 3.50″ L. BOX WEIGHT: .06 LBS.

TECH NOTES This is an OS Max Bearing for many engines such as: 61SF, 61SFN, 61FX 91FX FT300 FR5-300 INCLUDES: One Rear Bearing _ SPECS: Inner Diameter: 17mm Outer Diameter: 35mm Width: 8mm Bearing Markings & details: JAPAN UX NTN 18003 5/19/93 ir/jl   BOX DIMENSIONS: 2.13″ W. X .38″ H. X 3.50″ L. BOX […]