Assembling The Carburetor - Stihl BR 800 Service Manual

Pull out the choke shaft (23).
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Remove the spring (22).
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9.4

Assembling the Carburetor

9.4.1 Installing the Choke Shaft
23
10
Fit the spring (22) on the choke shaft so that its bent
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end (arrow) engages the lever on the choke shaft
(23).
Push the choke shaft (23) into the carburetor (10) so
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that the straight end of the spring (22) engages the
bore (arrow).
37 35 23
34
Pull the choke shaft (23) until its annular groove
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(arrow) is outside the bore.
Fit the clip (34) in the groove (arrow) in the choke
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shaft (23).
Insert and tighten down the screw (35).
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Push choke knob (37) onto shaft (23) so that it snaps
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into place.
BR 800
22
23
23
Rotate the choke shaft (23) clockwise and hold it so
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that its flat side faces outwards.
Fit the choke shutter (20) so that the number (arrow)
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is visible and the small hole (arrow) is closed by the
choke shaft.
Coat thread of screw (21) with Loctite 242.
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Insert the screw (21) but do not tighten it down yet.
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Close the choke shutter (20).
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This centers the choke shutter (20) in the carburetor's
bore.
Tighten down the screw (21).
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Open and close the choke shutter (20) several times.
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If the choke shutter (20) sticks:
Center it again.
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9.4.2 Installing the Accelerator Pump and Throttle Shaft
10
46
45
44
Fit the spring (39) in the carburetor (10).
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Fit the sealing ring (45) in the groove in the pump
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piston (44).
Push the pump piston (44) into the carburetor (10) so
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that its blunt faces the spring (46).
Fit the spring (39) on the throttle shaft (38) so that its
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bent end (arrow) engages the lever on the throttle
shaft (38).
Push the bushing (40) onto the throttle shaft (38).
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Push the sealing ring (42) into the ring (41).
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20 21
39
38
40
41
42
25