Stihl FC 75 - Piston Ring Service; Crankshaft Removal

•
Slidecylinderoverpiston;the
clampingstrapslipsdownward
andthepistonringsslipintothe
cylinder.
-Removeclampingstrapand
assemblyblock.
-Lineupcylinderandcylinder
gasket.
•
Tightencylinderbasescrewsto
atorqueof9.5Nmwithsocket
(1)08125422104.
See4.4forfurtherassemblysteps.
-Removepiston,see4.5.1.
Note:Cokingresiduesmustnot
beallowedtoenterthecrankcase
whenfittingthepistonringsand/or
cleaningthegrooves.
-Removepistonringsfrompiston.
•
Scrapethegroovescleanwitha
pieceofoldpistonring.
•
Fitthenewpistonringsinthe
groovessothattheradiiface
upwards.
-Installpiston,see4.5.2.
-Removecylinder,see4.5.1
•
Unscrewstartercarrierfrom
crankshaftstub.
•
Unscrewclutchfromcrankshaft
stub.
•
Pullflywheeloffcrankshaftstub,
see5.3.
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4.6 Pistonrings4.7Crankcase
4.7.1 Removingthecrankshaft
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