Husqvarna WR 250/2004 Workshop Manual page 362

NOTE PER MODELLI U.S.A./AUS
NOTES FOR U.S.A./AUS MODELS
NOTES POUR MODELES U.S.A./AUS
ANMERKUNG FÜR U.S.A./AUS MODELL
NOTE POR MODELOS U.S.A./AUS
SPARK ARRESTER
The WR model is equipped with a U.S. Forest Service approved spark arrester for maximum efficienty and performance.
" SPARK ARRESTER" MAINTENANCE AND CLEANOUT INSTRUCTIONS
Proceed as follows:
A: Remove the screws (1) and the R.H. side panel (2).
B: Remove the two screws (3) fastening the muffler to the rear frame. Extract the silencer from the union manifold to the exhaust pipe.
Note*: If silencer or exhaust are difficult to remove, help to slide them apart by tapping gently with a rubber or plastic hammer.
C: remove the four screws (4) and the endcap (5) from silencer's body;
D: examinate SPARK ARRESTER conditions and remove, if necessary, carbon particles from the SPARK ARRESTER screen;
E: if necessary, inflate air on the SPARK ARRESTER screen, in the opposite direction in respect of the exhausted gas flow;
F: assemble the front endcap on the silencer's body, mounting the screws in the correct position, providing a tight connection between endcap
and silencer's body, using, if necessary, a silicone paste;
G: re-assemble the silencer on motorbike.
Due to the SPARK ARRESTER position on the silencer, if you need only to check the SPARK ARRESTER conditions you can:
A: disassemble the silencer from motorbike;
B: check SPARK ARRESTER conditions simply looking into the silencer from front endcap opening;
C: if the check is positive, you can proceed in re-assembling the silencer on the motorbike;
D: if the check is negative, proceed with the maintenance and cleanout procedure.
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N° 8000A2954 (09-03)
Z.4