17 ENGINE
If the piston pin seating has excessive play:
- Replace the piston and, if necessary, the cylinder and
piston pin.
- Measure the piston at the piston skirt, at right angles to the
piston pin, at a distance f).
Guideline
Distance
G
7 mm (0.28 in)
Piston - diameter
Size I
94.93 ... 94.96 mm (3. 737 4
... 3.7386 in)
Size II
94.94 ... 94.97 mm (3.7378
... 3.739 in)
Info
Piston dimensions
O
are marked on the piston head .
..
17 .4.17 Checking the piston ring end gap
310062-10
- Remove the piston ring from the piston.
- Place the piston ring in the cylinder and align with the piston.
Guideline
Below the upper edge of the 10 mm (0.39 in)
cylinder
- Using special tool
O,
measure the end gap.
Guideline
Piston ring end gap
Compression ring
I :5 1.00 mm (:5 0.0394 in)
Oil scraper ring
I :5 1.20 mm (:5 0.0472 in)
I Feeler gauge (59029041100) (
�
p. 295)
If the end gap is greater than the specified value:
- Check/measure the cylinder. (
�
p. 196)
If cylinder wear lies within the specified tolerance:
- Change the piston ring.
- Mount the piston ring with the marking facing upward.
..
17.4.18 Measuring the piston/cylinder mounting clearance
310060-10
198
- Check/measure the cylinder. (
�
p. 196)
- Check/measure the piston. (
�
p. 197)
- The smallest piston/cylinder mounting clearance equals the
smallest cylinder bore diameter minus the largest piston
diameter. The largest piston/cylinder mounting clearance
equals the largest cylinder bore diameter minus the smallest
piston diameter.
Содержание F2303P0
Страница 1: ...PIONEERING SINCE 1903 REPAIR MANUAL2016 FS 450 Art no 3403034en Husqvarna MOTORCYCLES ...
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Страница 157: ...16 BRAKE SYSTEM Check the foot brake lever for a firm pressure point 155 ...
Страница 281: ...28 SERVICE SCHEDULE 279 ...