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11
Specifi cations
20 690 01 Rev. F KohlerEngines.com
CLEARANCE SPECIFICATIONS
3
SV470-SV480 SV530-SV540 SV590-SV620
Piston, Piston Rings, and Piston Pin (Continued)
Top and Middle Compression Ring End Gap New
Bore
Top Ring
Middle Ring
Used Bore (max.)
0.15/0.40 mm (0.006/0.016 in.)
0.30/0.55 mm (0.012/0.022 in.)
0.77 mm (0.030 in.)
Thrust Face O.D.
7
New
--- --- 93.928/93.942 mm
(3.6980/3.6985 in.)
Spec. 00XX: 83.948/83.962 mm
(3.3050/3.3056 in.)
88.948/88.962 mm
(3.5018/3.5024 in.)
---
Spec. 01XX: 88.948/88.962 mm
(3.5018/3.5024 in.)
--- ---
Spec. 02XX or higher: 93.928/93.942 mm
(3.6980/3.6985 in.)
93.928/93.942 mm
(3.6980/3.6985 in.)
---
Max. Wear Limit --- --- 93.828 mm
(3.6940 in.)
Spec. 00XX: 83.828 mm
(3.3003 in.)
88.828 mm
(3.4972 in.)
---
Spec. 01XX: 88.828 mm
(3.4972 in.)
--- ---
Spec. 02XX or higher: 93.828 mm
(3.6940 in.)
93.828 mm
(3.6940 in.)
---
Piston Thrust Face-to-Cylinder Bore
7
Running
Clearance
0.045 mm (0.0018 in.) 0.0880 mm
(0.0035 in.)
Valves and Valve Lifters
Intake Valve Lash
8
0.127 mm (0.005 in.)
Exhaust Valve Lash
8
0.178 mm (0.007 in.)
Intake Valve Minimum Lift 8.9 mm (0.350 in.)
Exhaust Valve Minimum Lift 8.9 mm (0.350 in.)
Nominal Valve Seat Angle 45°
Intake Valve Stem-to-Valve Guide Running
Clearance
0.038/0.076 mm (0.0015/0.003 in.)
Exhaust Valve Stem-to-Valve Guide Running
Clearance
0.050/0.088 mm (0.0020/0.0035 in.)
Intake Valve Guide I.D.
New
Max. Wear Limit
6.038/6.058 mm (0.2377/0.2385 in.)
6.135 mm (0.2415 in.)
Intake Valve Stem Diameter
New 5.982/6.0 mm (0.2355/0.2362 in.)
Exhaust Valve Guide I.D.
New
Max. Wear Limit
6.038/6.058 mm (0.2377/0.2385 in.)
6.160 mm (0.2425 in.)
Exhaust Valve Stem Diameter
New 5.970/5.988 mm (0.235/0.2357 in.)
3
Values are in Metric units. Values in parentheses are English equivalents.
7
Measure 8 mm (0.314 in.) above bottom of piston skirt at right angles to piston pin.
8
Check valve lash every 200 hours, adjust as required.