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Cub Cadet 3240 Engine

Cub Cadet 3240 Engine Specifications

Engine Model - Kohler Command CH22S
Engine Type - Gasoline, 4-cycle V-Twin air-cooled
Number of Cylinders - 2
Displacement, cc (cu.in) - 624 (38.0)
Engine Bore, mm (in) - 77.0 (3.03)
Engine Stroke, mm (in) - 67.0 (2.64)
Rated Engine Power, hp (kW) - 22.0 (16.4)
Rated Engine Speed, rpm - 3600
Maximum Torque, Nm (ft-lbs) - 51.8 (38.2)
Torque Speed, rpm - 2200
Compression - 8.5:1
Carburetor Model - Keihin
Carburetor Type - One-Barrel, fixed main jet
Fuel Pump Type - Pulse/mechanical
Fuel Filter - In-line
Governor - Mechanical
Lubrication - Full pressure
Oil filter - Full-flow type
Air Cleaner - Replaceable, paper element
Oil Capacity, L (qts) - 1.9 (2.0)
Electrical System Rating, Volts - 12
Starter Type - Electric

Cub Cadet 3240 Engine Maintenance Data

Valve Adjustment

Intake Valve Clearance (Cold), mm (in) - 0.038-0.076 (0.0015-0.0030)
Exhaust Valve Clearance (Cold), mm (in) - 0.050-0.088 (0.0020-0.0035)
Hydraulic Valve Lifter to Crankcase Clearance - 0.0241-0.0501 mm (0.0009-0.0020 in)
Intake Valve Guide Depth - 4.00 mm (0.1575 in)
Exhaust Valve Guide Depth - 6.50 mm (0.2559 in)

Engine Oil and Filters

Engine Oil Type (Summer Time) - SAE 10W-30
Engine Oil Type (Winter Time) - SAE 5W-30
Oil Classification - API SJ or higher
Oil Capacity (w/o Filter), L (qts) - 1.6 (1.7)
Oil Capacity (with New Filter), L (qts) - 1.8 (1.9)
Oil Filter Part Number - 12-050-01-S
Air Filter Part Number - 47-083-03-S

Carburetor Adjustment

Main Fuel - 2-1/2 turns
Idle Fuel - 3/4 to 1 full turn
Low Idle Speed, rpm - 1200±75
High Idle Speed, rpm - 3600±50

Ignition System

Spark Plug Type - Champion RC12YC
Spark Plug Gap, mm (in) - 0.76 (0.030)
Module Air Gap, mm (in) - 0.28-0.33 (0.011-0.013)
Thread Size, mm (in) - 14 (0.55)
Reach, mm (in) - 19.1 (0.75)
Spark Plug Torque, Nm (ft-lbs) - 27 (20)

Cub Cadet 3240 Engine Service Specifications

Cylinder Block

Cylinder Bore I.D (Standard) - 77.000-77.025 mm (3.0315-3.0325 in)
Cylinder Bore I.D (Max. Wear Limit) - 77.063 mm (3.0340 in)
Cylinder Bore (Max. Out of Round) - 0.12 mm (0.0047 in)
Cylinder Bore Max. Taper - 0.05 mm (0.0020 in)
Cylinder Head Max. Out of Flatness - 0.076 mm (0.003 in)
Camshaft End Play (W/Shim) - 0.076-0.127 mm (0.0030-0.0050 in)
Camshaft Clearance - 0.025-0.063 mm (0.0010-0.0025 in)
Camshaft Bore I.D - 20.000-20.025 mm (0.7874-0.7884 in)
Camshaft Bearing Surface O.D - 19.962-19.975 mm (0.7859-0.7864 in)
Connecting Rod to Crankpin Clearance - 0.030-0.055 mm (0.0012-0.0022 in)
Connecting Rod to Crankpin Side Clearance - 0.26-0.63 mm (0.0102-0.0248 in)
Connecting Rod to Piston Pin Clearance - 0.015-0.028 mm (0.0006-0.0011 in)

Valves

Intake Valve Stem to Valve Guide Clearance - 0.038-0.076 mm (0.0015-0.0030 in)
Exhaust Valve Stem to Valve Guide Clearance - 0.050-0.088 mm (0.0020-0.0035 in)
Intake Valve Guide I.D - 7.038-7.058 mm (0.2771-0.2779 in)
Exhaust Valve Guide I.D - 7.038-7.058 mm (0.2771-0.2779 in)
Valve Guide Reamer Size (Standard) - 7.048 mm (0.2775 in)
Valve Guide Reamer Size (0.25 Oversize) - 7.298 mm (0.2873 in)
Intake Valve Minimum Lift - 8.07 mm (0.3177 in)
Exhaust Valve Minimum Lift - 8.07 mm (0.3177 in)
Nominal Valve Face Angle - 45 degrees
Valve Seat Angle (Intake/Exhaust) - 89 degrees
Intake Valve Insert O.D - 36.987-37.013 mm (1.4562-1.4572 in)
Exhaust Valve Insert O.D - 32.987-33.013 mm (1.2987-1.2997 in)
Intake Valve Guide Depth - 4.00 mm (0.1575 in)
Exhaust Valve Guide Depth - 6.50 mm (0.2559 in)
Intake Valve Head Diameter - 33.37-33.63 mm (1.3138-1.3240 in)
Exhaust Valve Head Diameter - 29.37-29.63 mm (1.1563-1.1665 in)
Intake Valve Stem Diameter - 6.982-7.000 mm (0.2749-0.2756 in)
Exhaust Valve Stem Diameter - 6.970-6.988 mm (0.2744-0.2751 in)

Crankshaft

Crankshaft End Play (Free) - 0.070-0.590 mm (0.0028-0.0230 in)
Crankshaft Bore (In Crankcase) - 40.965-41.003 mm (1.6128-1.6143 in)
Crankshaft Bore (In Closure Plate) - 40.987-40.974 mm (1.6136-1.6131 in)
Crankshaft Bore to Crankshaft Clearance - 0.039-0.074 mm (0.0015-0.0029 in)
Flywheel End Main Bearing Journal O.D - 40.913-40.935 mm (1.6107-1.6116 in)
Flywheel End Main Bearing Journal Max. Taper - 0.022 mm (0.0009 in)
Closure Plate End Main Bearing Journal O.D - 40.913-40.935 mm (1.6107-1.6116 in)
Closure Plate End Main Bearing Journal Max. Taper - 0.022 mm (0.0009 in)
Connecting Rod Journal O.D - 35.955-35.973 mm (1.4156-1.4163 in)
Connecting Rod Journal Max. Taper - 0.018 mm (0.0007 in)
Crankshaft T.I.R (PTO End, Crank in Engine) - 0.279 mm (0.0110 in)
Crankshaft T.I.R (Entire Crank, in V-Blocks) - 0.10 mm (0.0039 in)

Piston and Piston Rings

Piston to Piston Pin Clearance - 0.006-0.017 mm (0.0002-0.0007 in)
Piston Pin Bore I.D - 17.006-17.012 mm (0.6695-0.6698 in)
Piston Pin O.D - 16.995-17.000 mm (0.6691-0.6693 in)
Top Compression Ring Groove Clearance - 0.040-0.080 mm (0.0016-0.0031 in)
Middle Compression Ring Groove Clearance - 0.040-0.080 mm (0.0016-0.0031 in)
Oil Control Ring Groove Clearance - 0.060-0.202 mm (0.0024-0.0080 in)
Top and Middle Compression Ring End Gap - 0.25-0.45 mm (0.0100-0.0177 in)
Piston Thrust Face O.D (Std) - 76.967-76.985 mm (3.0302-3.0309 in)
Piston Thrust Face O.D (Wear Limit) - 76.840 mm (3.0252 in)
Piston Thrust Face to Cylinder Bore Clearance - 0.014-0.057 mm (0.0005-0.0022 in)

Cub Cadet 3240 Engine Tightening Torque Specs

Cylinder Head Nut, Nm (ft-lb) - 16.9-33.9 (12.5-25.1)
Cylinder Head Bolt, Nm (ft-lb) - 22.6-41.8 (16.7-30.8)
Rocker Arm Screw, Nm (ft-lb) - 11.3 (8.3)
Connecting Rod Cap, Nm (ft-lb) - 11.3 (8.3)
Flywheel Retaining Screw, Nm (ft-lb) - 66.4 (49.1)
Intake Manifold Mounting, Nm (ft-lb) - 7.4 (5.5)
Carburetor Mounting Nut, Nm (ft-lb) - 6.2-7.3 (4.6-5.4)
Closure Plate, Nm (ft-lb) - 24.4 (18.1)
Oil Drain Plug, Nm (ft-lb) - 13.6 (10.1)
Governor Lever Nut, Nm (ft-lb) - 6.8 (5.1)
Ignition Module, Nm (ft-lb) - 4.0-6.2 (2.9-4.6)
Muffler Retaining Nut, Nm (ft-lb) - 24.4 (18.1)
Fuel Pump Screw, Nm (ft-lb) - 2.3 (1.7)
Spark Plug, Nm (ft-lb) - 27 (20.1)

CUB CADET TRACTORS TROUBLESHOOTING
1050	1863	2166	2182	2186
3184	3205	GT1554	GT2550	GTX2100
LT1040	LT1042	LT1045	LT1046	LT1050
LT2180	LTX1040	LTX1042	LTX1045	LTX1046
LTX1050	SLTX1054	XT1 LT42	XT1 LT46	XT3 GSX