Injection Pump, Stop Switch; Special Servicing Tools, Servicing Aids; Removing The Injection Pump; Removing The Stop Switch - Stihl MS 500i Service Manual

21 Injection Pump, Stop Switch

21.1

Special Servicing Tools, Servicing Aids

Screwdriver – 0000 890 2300 or equivalent
–
Socket, T20x125 – 0812 542 2041 or equivalent
–
Torque wrench – 5910 890 0302 or equivalent
–
Screwdriver, T20 – 5910 890 2301 or equivalent
–
Punch-down tool – 5910 890 4000
–
Flat nose side cutting pliers
–
21.2

Removing the Injection Pump

Preparations, @ 3.1.
N
Remove the filter cover
N
Remove the air filter.
N
Remove the filter base, @ 15.2.
N
Remove the throttle body and sleeve, @ 15.4.
N
Take out the screw (1).
N
Remove the bracket (2).
N
Unlock and remove connector of stop switch (8) from
N
controller, @ 19.7.
Take wires of stop switch (8) out of the guides.
N
Pull out the injection pump (3) together with the stop
N
switch (8) and cover (9).
MS 500i
10
12
11
1
P4x12 (1.2 Nm / 11 lbf. in.)
2
3
6
4
5
21.3

Removing the Stop Switch

Preparations, @ 3.1.
N
Remove the injection pump, @ 21.2.
N
Unlock and remove the cover (9).
N
Unlock the retaining tabs on the stop switch (8) and
N
pull the stop switch out of the bracket (6).
21.4

Removing Cap and Spring from Injection Pump

Preparations, @ 3.1.
N
Remove the injection pump (3), @ 21.2.
N
The injection pump (3) must be replaced if the screws with
lock pins are loosened, unscrewed or tightened.
Do not loosen, unscrew or tighten the screws with lock
pins.
Take out the screws (7).
N
Remove the bracket (6).
N
Remove the cap (5).
N
Remove the spring (4).
N
21.5 Removing the Injection Pump
Preparations, @ 3.1.
N
Remove the injection pump (3), @ 21.2.
N
8
9
7
39