Service Manual

6
Specifi cations
KohlerEngines.com 66 690 01 Rev. C
GENERAL SPECIFICATIONS
3,6
LH630 LH640 LH685 LH690 LH750 LH755
Bore 77 mm
(3.03 in.)
80 mm
(3.15 in.)
83 mm (3.3 in.)
Stroke 67 mm (2.64 in.) 69 mm (2.7 in.)
Displacement 624 cc
(38.1 cu. in.)
674 cc
(41.1 cu. in.)
747 cc (45.6 cu.
in.)
Oil Capacity (refi ll) 1.6-1.8 L (1.7-1.9 U.S. qt.)
Maximum Angle of Operation (@ full oil level)
4
20°
TORQUE SPECIFICATIONS
3,5
LH630 LH640 LH685 LH690 LH750 LH755
Carburetor and Intake Manifold
Intake Manifold Fastener (torque in 2 increments) fi rst to 7.4 N·m (66 in. lb.)
fi nally to 9.9 N·m (88 in. lb.)
Thermostat Housing Mounting Fastener 6.2-7.3 N·m (55-65 in. lb.)
Carburetor Mounting Fastener 9.9 N·m (88 in. lb.)
Closure Plate
Closure Plate Fastener 24.4 N·m (216 in. lb.)
Connecting Rod
Cap Fastener (torque in increments) 11.3 N·m (100 in. lb.)
Crankcase
Breather Cover Fastener 10.7 N·m (95 in. lb.) into new hole
7.3 N·m (65 in. lb.) into used hole
Oil Drain Plug 13.6 N·m (10 ft . lb.)
Cylinder Head
Cylinder Head Fastener (torque in 2 increments) fi rst to 16.9 N·m (150 in. lb.)
fi nally to 33.9 N·m (300 in. lb.)
Rocker Pivot Fastener 11.3 N·m (100 in. lb.)
3
Values are in Metric units. Values in parentheses are English equivalents.
4
Exceeding maximum angle of operation may cause engine damage from insuffi cient lubrication.
5
Lubricate threads with engine oil prior to assembly.
6
Any and all horsepower (hp) references by Kohler are Certifi ed Power Ratings and per SAE J1940 & J1995 hp
standards. Details on Certifi ed Power Ratings can be found at KohlerEngines.com.
ENGINE IDENTIFICATION NUMBERS
Kohler engine identifi cation numbers (model, specifi cation and serial) should be referenced for effi cient repair,
ordering correct parts, and engine replacement.
Model . . . . . . . . . . . . . . . . . . . . . LH630
Liquid Cooled
Horizontal Shaft
Numerical Designation
Specifi cation . . . . . . . . . . . . . . . LH630-0001
Serial . . . . . . . . . . . . . . . . . . . . . 4123500328
Year Manufactured Code Factory Code
Code Year
41 2011
42 2012
43 2013