Checking The Oil Pumps; Disassembling The Autodecompressor - Husqvarna FS 450 2019 Repair Manual

17 ENGINE
17.4.21
The following steps apply to both oil pumps.
17.4.22
200

Checking the oil pumps

Info

Disassembling the autodecompressor

304673-10
Guideline
Piston/cylinder - mounting clearance
Size I
Size II
Wear limit
-
O
Use special tool to measure the play between the exter­
nal rotor and the engine case.
I Feeler gauge (59029041100)
Oil pump
External rotor/engine
case clearance
If the measured value does not meet specifications:
-
Change the oil pump and, if necessary, the engine
case.
-
O
Use special tool to measure the play between the exter­
nal rotor and the internal rotor.
I Feeler gauge (59029041100)
Oil pump
External rotor/internal
rotor clearance
If the measured value does not meet specifications:
-
Replace the oil pump.
-
O
Take lock ring from the autodecompression shaft and
dispose of it.
0.040 ... 0.082 mm (0.00157
... 0.00323 in)
0.043 ... 0.085 mm (0.00169
... 0.00335 in)
0.120 mm (0.00472 in)
p. 313)
(ra!l
:S 0.20 mm (:S 0.0079 in)
I
p. 313)
(ra!l
s 0.20 mm (s 0.0079 in)
I
...
...