Checking The Piston Ring End Gap; Checking The Camshafts; Work On The Intake Camshaft - Husqvarna FE 250 EU 2014 Repair Manual

ENGINE
18
18.4.17

Checking the piston ring end gap

18.4.18

Checking the camshafts

18.4.19

Work on the intake camshaft

Guideline
Piston/cylinder - mounting clearance
Size I
Size II
Wear limit
-
Remove the piston ring from the piston.
-
Place the piston ring in the cylinder and align with the piston.
Guideline
I
Below the upper edge of the cylinder
-
Measure end gap
Guideline
Piston ring - end gap
Compression ring
306113-10
Oil scraper ring
If the end gap is greater than the specified measurement:
-
Check/measure the cylinder.
If cylinder wear lies within the specified tolerance:
-
Replace the piston ring.
-
Mount the piston ring with the marking facing toward the piston head.
-
Check the camshaft for damage and wear.
If there is damage or wear:
-
Change the camshaft.
-
If the surface of the cams is damaged, check the oil supply to the
camshaft and cam lever.
-
Check the autodecompressor Qfor damage and wear.
If there is damage or wear:
-
Change the exhaust camshaft.
306755-10
-
Remove lock ring
-
Take off bleeder plate@.
-
Remove 0-ring (D.
-
Check the parts of the bleeder and replace if necessary.
-
Mount the new 0-ring.
-
Position bleeder plate
-
Mount lock ring
306756-10
0.035 ... 0.057 mm (0.00138 ...
0.00224 in)
0.037 ... 0.060 mm (0.00146 ...
0.00236 in)
0.070 mm (0.00276 in)
1
20 mm (0.79 in)
G
with a feeler gauge.
I
$ 0.40 mm ($ 0.0157 in)
I
$ 0. 70 mm ($ 0.0276 in)
(� p. 155)
O.
8.
Q.
157