Pressure Testing The Cylinder - Husqvarna RedMax GZ550 Workshop Manual

7.24 Pressure testing the cylinder

1
Dismantle:
• cylinder cover
• carburetor*
• spark plug
* See specific instruction.
2
Attach the cover plate (A) 574 71 14-01 and cover
plug (B) 578 02 13-01. See figure 66b.
3
Loosen the screws on the muffler and press the
cover plate 502 54 11-02 (C) between the muffler
and cylinder. Tighten the screws for the muffler.
See figure 66b.
4
Screw the pressure test connection 503 84 40-02
into place. Connect tool 531 03 06-23 to the nipple.
5
Pump up the pressure to 80 kPa (0.8 bar). Wait
30 seconds. The pressure must not fall below
60 kPa (0.6 bar). Unscrew the cover plates and
plugs. Tighten the screws to the stated torque.
Remove the pressure test connection and fit the
spark plugs.
NOTE!
It is very important that the intake system is
sealed. Otherwise the engine may seize up.
C
B
Fig 66b
Repair Instructions
A
50
English –