Stihl MS 251 Instruction Manual - Page 87
air guide shroud's opening, wind, a piece of string 1 about 15 cm
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- Coat outside of grommet with STIHL press fluid to simplify installation, b 14 - Coat manifold flange with STIHL press fluid to simplify installation, b 14 2 : Fit the grommet (1) in the hole (arrow) and make sure it is properly seated. 2310RA339 TG 1 : Pull the fuel hose (1) and fuel return hose (2) out of the air guide shroud. - Remove the air guide shroud. 2 1 3 4 2310RA342 TG 2 1 1 - Install fuel pump with fuel hoses and elbow connector, b 12.11.4 2310RA324 TG : Place the air guide shroud (1) in position. : Push the new fuel hose (2) through the bore (arrow). - Use STIHL press fluid to simplify assembly, b 14 : Push the new fuel hose (3) 2 through the grommet (4). 2310RA340 TG : Remove the fuel pump (1) with the fuel hoses and elbow 1 connector (2), inspect and replace if necessary, b 12.11.4 2310RA325 TG - Pull out the shutter , check it and replace if necessary. Installing : To fit the manifold (2) through the air guide shroud's opening, wind a piece of string (1) (about 15 cm long) around the back of manifold flange. 1 2310RA341 TG - Remove the grommet, check and replace if necessary. 86 MS 231, MS 231 C, MS 251, MS 251 C