Husqvarna 390XP Workshop Manual page 29

6. Remove the clip (D) and unscrew the adjuster screw
(E). See fig. 4.
7. Use a pair of pliers and push on the pump piston at
(F) so that the cover plug (G) and pump piston (H)
can be removed. See fig. 4.
8. Use a pair of pliers and pull out the spring (I) and the
2 washers (J). See fig. 4.
13.2 Cleaning and inspection
Clean all parts, including the pump and oil pipe mounts
in the crankcase, and do a check of the following:
1. The taper on the adjuster screw (E) should not have
any wear marks. See fig. 5.
2. The eccentric face on the pump piston should not
have any wear marks. See fig. 5.
3. The gear on the pump piston should be undamaged.
See fig. 5.
4. The worm gear of the oil pump drive should be
undamaged. See fig. 6.
5. The oil pipe should be free from unwanted materials
and the filter clean.
6. The oil pipe should be free from unwanted materials
and its seals undamaged.
C
Fig. 3
Fig. 4
Fig. 4
Fig. 5
Fig. 5
Fig. 5
Fig. 6
Fig. 6
Fig. 6
Lubrication system
G
H
F
I
D
E
H
H
E
E
English - 29
J