Product Information
O.S. Valve Spring Suit FS-70 or the FS-91
O.S Engines P/N: 45960210
This is a new in packet OS Engines Replacement Valve Spring for the following OS engines:
OSMG0870 FS70S
OSMG0895 FS91S, SII, SII(P)
FEATURES: Metal construction
INCLUDES: One Spring
SPECS: Length: 14mm
Inside Diameter: 5mm
Note:
Guys if you are constantly breaking these springs then your prop is too small in diameter or pitch
as the engine is over revving and you are getting valve bounce as a result, go up an in inch in either
diameter or pitch and you should have no more problems. I had similar a issue with my FS91.
