Kohler SH270

1
18 690 01 Rev. G KohlerEngines.com
SH255, SH265, SH270
Service Manual
2 Safety
3 Maintenance
5 Specifi cations
12 Tools and Aids
15 Troubleshooting
19 Air Cleaner/Intake
20 Fuel System
24 Governor System
25 Lubrication System
26 Electrical System
30 Starter System
33 Disassembly/Inspection and Service
43 Reassembly
IMPORTANT: Read all safety precautions and instructions carefully before operating equipment. Refer to operating
instruction of equipment that this engine powers.
Ensure engine is stopped and level before performing any maintenance or service.

Kohler SH270 Specifications

General

Compression Ratio	8.5:1
Fuel System	Carburetor
Lubrication System	Splash
Cooling System	Forced air
Max RPM	3600 RPM
Engine Type	4-cycle, gasoline, OHV
Torque (Max)	14.9 ft-lb at 2500 RPM
Fuel Type	Unleaded gasoline
Fuel Tank Capacity	3.6 L (0.95 U.S. gal.)
Oil Capacity	0.6 liters
Starting System	Recoil
Ignition System	Electronic
Spark Plug Gap	0.76 mm (0.030 in.)
Valve Clearance (Intake)	0.10-0.15 mm
Valve Clearance (Exhaust)	0.15-0.20 mm (0.006-0.008 in.)

Summary

Safety

General Safety Precautions

Key warnings and cautions for operating and servicing the engine safely.

Maintenance

Maintenance Instructions and Schedule

Guidelines for routine engine maintenance and a schedule of tasks.

Specifications

General Engine Specifications

Core engine data including bore, stroke, displacement, and oil capacity.

Torque and Clearance Specifications

Recommended torque values and internal component clearance limits.

Troubleshooting

Troubleshooting Guide and Common Issues

General guide to diagnosing common engine problems and symptoms.

Diagnostic Tests and Engine Cleaning

Procedures for testing crankcase vacuum, compression, leakdown, and engine cleaning.

Lubrication System

Oil Level Check and Change Procedures

How to check and change the engine oil.

Electrical System

Spark Plug Service and Inspection

Battery and Ignition System Information

Battery requirements, maintenance, and electronic ignition system operation.

Ignition System and Oil Sentry Tests

Starter System

Starting Difficulties and Troubleshooting

Guide to diagnosing and resolving starting problems.

Electric Starting System Tests

Procedures for testing battery, fuse, relay, and starter motor.

Retractable Starter Service

Reassembly

Engine Internal Component Reassembly

Reassembling governor, crankshaft, connecting rod, piston, rings, valve tappets, camshaft.

Flywheel, Ignition, and Closure Plate Installation

Cylinder Head and Valve Train Reassembly

Final Assembly and Engine Testing