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6. Let the engine run for 2-3 minutes until warm.
7. Check that the top speed is still 8400 +- 200 rpm. Adjust if necessary.
8. Check that the H needle's locking cap is still adjusted to its richest setting. (Turned
counterclockwise to stop.)
9. Gently knock the H needle's locking cap into position. Use a 5 mm (0.2 inch) mandrel
or the locking pin for the gear, 502 02 61-03.
This is a basic carburettor adjustment. Further fine adjustments, within the limits the
locking cap allows, may be necessary to achieve optimum performance. See the
Operator's manual.
After replacement of only H-needle
1. Adjust the L-needle to its richest setting. (Turn counterclockwise to stop.)
2. Take off the locking cap from the H-needle using e.g. a pair of cutting pliers and
unscrew the needle.
3. Screw the new H-needle to the bottom and the turn it counterclockwise 1/2 turn.
4. Press a new locking cap on the H-needle to the first stop, which means that the locking
cap is not fixed to the needle, but can be rotated separately.
5. Adjust the locking cap to the richest position without turning the needle. (Turned
counterclockwise to stop.)
6. Fit 4 trimmer cords, diameter 3.3 mm (0.13 inch) on a Trimmy Fix.
(Trimmy Fix M10, 531 00 38-69, for 225 and 232. Trimmy Fix M12, 502 13 87-02, for
235.)
It may be necessary to drill out the holes in the Trimmy Fix to make it easier to fit the
trimmer cords.
7. Cut the trimmer cords to correct length (measured from the outer edge of the Trimmy
Fix):
225: 145 mm (5.7 inches)
232: 155 mm (6.1 inches)
235: 170 mm (6.7 inches)
Fit the Trimmy fix on the machine. Note! For 235, splash guard must be removed. Bear
in mind the trimmer cords.
English Page 2/5
S E R V I C E
4
97-04-10
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