Generac 00941-4 owner manual Service and Adjustments, Battery, Adjusting the Carburetor

Section 3 – Maintenance

IMPACT-36 plus II Recreational Vehicle Generator

3.11 SERVICE AND ADJUSTMENTS

Do NOT use a forceful spray of water to clean

!the generator. Water will enter the generator interior and cause problems, and may also contaminate the generator fuel system.

3.10 BATTERY

All lead-acid storage batteries will discharge when not in use. Inspect the generator battery as follows:

◆3.10.1 ONCE WEEKLY

Inspect battery posts and cables for tightness, corro- sion. Clean and/or tighten as necessary.

Also check battery fluid level, and, if necessary, fill with DISTILLED WATER ONLY. DO NOT USE TAP WATER IN BATTERY.

◆3.10.2 EVERY SIX MONTHS

Have the battery state of charge and condition checked by an automotive service facility. This should be done with an automotive type battery hydrometer.

DANGER

Storage batteries give off explosive hydrogen gas. This can form an explosive mixture around the battery for several hours after charging. The slightest spark can ignite the gas and cause an explosion. Such an explo- sion can shatter the battery and cause blind- ness or other injury. Any area that houses a storage battery must be properly ventilated. Do not allow smoking, open flame, sparks or any spark producing tools or equipment near the battery.

Battery electrolyte fluid is an extremely caus-

!tic sulfuric acid solution that can cause severe burns. Do not permit fluid to contact eyes, skin, clothing, painted surfaces, etc. Wear pro- tective goggles, protective clothing and gloves when handling a battery. If fluid is spilled, flush the affected area immediately with clear water.

Do not use any jumper cables or booster bat-

!tery to crank and start the generator engine. If any battery has discharged, remove it from the vehicle for recharging.

◆3.11.1 ENGINE SPEED

Engine speed is completely computer-controlled. There is no adjustment for speed on the unit. The computer adjusts the engine speed using an electron- ic governor throttle control. The computer monitors the demand for power and adjusts the engine speed accordingly. This allows the engine to produce only the power required, resulting in fuel economy as well as lowering the overall noise emitted.

NOTE:

The computer will disable the electrical load capabilities of the generator and enter a fault con- dition if the throttle is accelerated manually or any other way.

3.12 ADJUSTING THE CARBURETOR

The carburetor of the generator is preset at the facto- ry. The carburetor should not be tampered with, as this will void the emission control system warranty. If the generator is used at altitudes in excess of 5,000 feet, consult the Generac Authorized Service Facility regarding high altitude jetting changes.

3.13 ADJUSTING VALVE CLEARANCE

After the first 50 hours of operation, adjust the valve clearance in the engine.

When adjusting valve clearance, the engine should be at room temperature and the piston should be at Top Dead Center (TDC) of its compression stroke (both valves closed). Correct clearance is 0.001-0.003 inch

(0.03-0.07mm). Adjust valve clearance as follows:

1.Loosen the rocker arm jam nut. Use an allen wrench to turn the pivot ball stud while checking clearance between the rocker arm and the valve stem with a feeler gauge (Figure 3.8).

Figure 3.8 — Adjusting Valve Clearance

12 Generac® Power Systems, Inc.