Section 7

DIAGNOSTIC TESTS

ment of the SOLENOID PLUNGER. Adjust SOLENOID PLUNGER movement until, with the carburetor CHOKE PLATE closed, the CHOKE SOLENOID is bottomed in its coil (plunger at full actuated position). With the CHOKE PLATE closed and the plunger bottomed in its coil, tighten the two screws.

4.Disconnect Connector 1: Set the VOM to measure DC voltage. Connect the positive (+) test lead to Wire 90 (Pin 2) of Connector 1 going to the control panel. Connect the negative (-) test lead to frame ground. Activate the Start-Stop Switch to “START.” During cranking, battery voltage should be measured cyclically every two seconds.

RESULTS:

1.If Choke operation is good, go to Test 35 for Problem 7, “Engine Cranks but Won’t Start” (Section 6). Go to Test 41 for Problem 8, “Engine Starts Hard and Runs Rough”.

2.If battery voltage was measured in Step 5 but not measured in Step 4, repair or replace Wire 90 between Engine Control Board (ECB) and Connector 1.

3.If battery voltage is not measured in Step 5 during engine cranking, replace Engine Control Board.

4.If “Continuity” is not measured in Step 6, repair or replace Wire 0 between the ground terminal and Connector 1.

5.If Choke Solenoid coil resistance is not measured or is incor- rect in Step 7, replace the Choke Solenoid.

Figure 7-43. – Connector 1

5.If battery voltage was not measured in Step 4, check at J1 Connector: Connect positive (+) test lead to Pin Location J1-2 at the engine control board. Connect the negative (-) test lead to frame ground. Activate the Start-Stop Switch to “START.” During cranking, battery voltage should be measured cyclically every two seconds.

6.Set the VOM to measure resistance. Disconnect Connector 1 from the Choke Solenoid. Connect one test lead to Wire 0 (Pin 1) of Connector 1, going to the control panel. Connect the other test lead to frame ground. “Continuity” should be measured.

7.Set the VOM to measure resistance. Disconnect Connector 1. Connect one meter test lead to Wire 90 (Connector 1, Pin 2) going to the Choke Solenoid. Connect the other meter test lead to Wire 0 (Connector 1, Pin 1). Approximately 3.7 ohms should be measured. (Current draw of Choke Solenoid at nominal volt- age is 3.4 amps).

Short to Ground:

8.Set the VOM to measure resistance. Disconnect Connector 1. Connect one meter test lead to Wire 90 (Connector 1, Pin 2). Connect the other meter test lead to the metal Choke Solenoid housing. “Infinity” should be measured. If “Continuity” is mea- sured, a short to ground exists.

Figure 7-44. – Exploded View of Choke Assembly

Figure 7-45. – Automatic Choke Assembly

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Generac Power Systems 65, 55, 75 manual Connector
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65, 75, 55 specifications

Generac Power Systems has established itself as a leader in power generation, offering a range of high-performance generators suited for residential and commercial applications. Among its lineup, the Generac 55, 65, and 75 kW generators stand out for their reliability, efficiency, and advanced features.

The Generac 55 kW generator is designed to provide a powerful backup solution for medium to large homes or small businesses. It features a robust engine that delivers dependable performance while maintaining fuel efficiency. One of its key characteristics is the True Power Technology, which produces clean and stable power, ensuring that sensitive electronic devices run smoothly without risk of damage. This generator is equipped with a fully automatic transfer switch, allowing for seamless power transition during outages, with minimal disruption.

Moving to the 65 kW model, it offers increased capacity while retaining the fundamental qualities of the 55 kW version. This unit is particularly suited for larger homes or commercial applications that require greater power demands. The 65 kW generator utilizes Generac’s G-Force engine, known for its durability and reduced maintenance needs. Advanced features such as remote monitoring capabilities allow users to check the generator's status from anywhere, providing peace of mind and convenience.

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All three models incorporate advanced air-cooled technology, which enhances their efficiency and operational lifespan. Additionally, their corrosion-resistant enclosures ensure durability even in harsh weather conditions, making them suitable for diverse environments. The intuitive LCD display on each unit provides critical information, including runtime hours and maintenance reminders, empowering users with easy access to the generator's performance data.

Overall, Generac Power Systems' 55, 65, and 75 kW generators represent a commitment to quality, reliability, and innovation in backup power solutions. They are designed to meet the demands of modern power consumption while ensuring peace of mind through robust engineering and advanced technology. Whether for home use or commercial applications, these generators provide an effective means to stay prepared for unexpected power outages.
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