Valve Spring - SeaDoo Rotax 1503 4-Tec 2005 Engine Shop Manual

Section 01 ENGINES (1503 4-TEC)
Subsection 06 (CYLINDER HEAD)
Inspection
Check each lobe and bearing journal of camshaft
for scoring, scuffing, cracks or other signs of wear.
Measure camshaft bearing journal diameter and
lobe height using a micrometer.
Measure clearance between both ends of
camshaft and cylinder head.
A. Camshaft lobe (exhaust valves)
B. Camshaft lobe (intake valves)
C. Camshaft bearing journal
D. Camshaft bearing journal — engine front
CAMSHAFT LOBE — EXHAUST VALVE
NEW MINIMUM
NEW MAXIMUM
SERVICE LIMIT
CAMSHAFT LOBE — INTAKE VALVE
NEW MINIMUM
NEW MAXIMUM
SERVICE LIMIT
CAMSHAFT BEARING JOURNAL
NEW MINIMUM
NEW MAXIMUM
SERVICE LIMIT
CAMSHAFT BEARING JOURNAL —
ENGINE FRONT
NEW MINIMUM
NEW MAXIMUM
SERVICE LIMIT
CAMSHAFT BORE MEASURED IN DIAMETER
NEW MINIMUM
NEW MAXIMUM
SERVICE LIMIT
80
31.699 mm (1.248 in)
31.809 mm (1.252 in)
31.670 mm (1.247 in)
31.480 mm (1.239 in)
31.590 mm (1.244 in)
31.450 mm (1.238 in)
39.892 mm (1.5705 in)
39.905 mm (1.5711 in)
39.860 mm (1.5693 in)
24.939 mm (.9818 in)
24.960 mm (.9826 in)
24.910 mm (.9807 in)
40.000 mm (1.5748 in)
40.016 mm (1.5754 in)
40.050 mm (1.5767 in)
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CAMSHAFT BORE — ENGINE FRONT
MEASURED IN DIAMETER
NEW MINIMUM
NEW MAXIMUM
SERVICE LIMIT
Replace parts that are not within specifications.
Installation
For installation, reverse the removal procedure.
Pay attention to the following details.
Grease the camshaft bearing journals well by us-
ing the Klueber Isoflex grease (P/N 293 550 021)
or a similar product.
Install camshaft then place the camshaft lock
no. 20 in the slot.
1. Camshaft lock position
For other parts, refer to proper installation proce-
dure.

VALVE SPRING

Removal
Remove:
– rocker arms
– cylinder head.
Compress valve springs no. 22 and no. 23. Use
valve spring compressor clamp (P/N 529 035 724)
and valve spring compressor cup (P/N 529 035
725).
25.000 mm (.9842 in)
25.013 mm (.9848 in)
25.050 mm (.9862 in)
smr2005-036