Need help?Do you have a question about the Generac Power Systems GTH990 and is the answer not in the manual?
General| Displacement | 999cc |
|---|---|
| Cylinders | 2 |
| Fuel Type | Gasoline |
| Oil Capacity | 1.9 quarts |
| Cooling System | Air-cooled |
| Starting System | Electric |
| Battery | 12V |
Defines DANGER, WARNING, CAUTION, and NOTE to alert personnel to hazardous instructions.
Details safety precautions and guidelines for operating the engine safely and correctly.
Outlines the recommended maintenance intervals for various engine components.
Specifies recommended gasoline types, octane ratings, and fuel additives.
Lists common engine operation complaints and how to approach diagnosing them.
Guides on checking the fuel system for issues like tank fullness and valve operation.
Explains how to perform a compression test to assess cylinder condition.
Describes how to test cylinder balance to determine equal operation.
Details the procedure for a cylinder leakdown test to identify leaks.
Provides troubleshooting steps for gaseous fuel systems, emphasizing safety.
Procedure for performing a static adjustment of the governor linkage.
Guide for making dynamic adjustments to the governor while the engine is running.
Instructions for inspecting the cylinder head for cracks, damage, and distortion.
Lists common starting problems and their potential causes for the electric starter.
Identifies potential causes for the engine cranking slowly.
Lists reasons why the engine starter motor might not engage or crank.
Troubleshooting for when the starter motor spins but fails to turn the engine.
Detailed tests for the starter motor, including solenoid and voltage drop.
Procedure to check for excessive voltage drop in the starter circuit.
Explains how to perform an amp draw test on the starter motor.
Procedure to test the AC output of the alternator stator.
Explains how to test the regulator-rectifier for proper voltage output.
Instructions on how to check and maintain the engine oil level correctly.
Step-by-step guide for changing the engine oil and oil filter.
Specifies the correct oil types and weights for different operating temperatures.
General steps for disassembling the engine, including removing major components.
Procedure for checking the crankcase for cracks, threads, and cylinder bore condition.
Procedure for adjusting the ignition coil air gap.
Procedure for adjusting valve clearances on the engine cylinders.
Instructions for performing the static governor adjustment before starting the engine.
Details torque values for various engine components and fasteners.
Lists standard and reject dimensions for engine components for wear checks.
To Next Page