Filling the Fuel Tank, Adjusting Idle Speed

Adjusting the Carburetor

It is not necessary to adjust the carburetor when the unit is new. Adjust the carburetor only when you are sure it is necessary due to differ- ences in working conditions such as atmospheric pressure or temperature, or change in unit conditions after more than 10 hours of use.

If you are unfamiliar with carbure- tor adjustment techniques, ask your dealer for advice.

Adjust the carburetor in accor- dance with the following procedures.

WARNING!

Adjusting Idle Speed

To adjust idle speed, turn the Idle Adjust Screw with a screwdriver. See Figure 22. Turn clockwise to increase idle speed. Adjust idle speed so the cut-off wheel does not rotate at idle.

Recommended idle speed: 2,200–2,600 min-1(rpm)

EC7500.30

4.Loosen bolt with the wrench and remove bolt and outer flange. See Figure 8.

Outer

Flange Bolt

Tighten

Loosen EC7500.20

Figure 8

5.Place cut-off wheel so the inner bore is properly set onto the collar.

WARNING!

Using an inappropriate cut-off wheel may cause the wheel to break and may result in serious injury.

6.Replace outer flange and bolt, and then, while holding hex wrench in the hole in belt guard, tighten the bolt with wrench.

7.Make sure the cut-off wheel is securely fastened. Spin the wheel to make sure it does not wobble.

Figure 22

Filling the Fuel Tank

When adjusting the carburetor, keep bystanders well away, and make sure the cut-off wheel is clear of any interference because the wheel may rotate during carburetor adjustment.

1.Prior to adjusting, clean the air filter as described on the previous page and then run the engine for a few of minutes at idle speed to warm up the engine.

WARNING!

■When filling the fuel tank, make sure the engine is stopped and cool.

■Filling the fuel tank or mixing fuel and oil must be done in a place where there is no risk of fire.

CAUTION!

Some gasolines contain alcohol as an oxygenate! Oxygenated fuels may cause increased operating temperatures. Under certain conditions, alcohol-based fuels may also reduce the lubricating qualities of some mixing oils. Never use any fuel containing more than 10% alcohol by volume! Generic oils and some outboard motor oils may not be intended for use in high-perfor- mance air-cooled 2-cycle engines and should never be used in your Shindaiwa engine.

CAUTION!

This engine is designed to operate on a 50:1 mixture consisting of unleaded gasoline and premium 2- cycle mixing oil only.

■Use only fresh, clean unleaded gasoline with a pump octane of 87 or higher.

■Mix all fuel with a premium 2-cycle air-cooled mixing oil at a 50:1 gasoline/oil ratio.

Examples of 50:1 mixing quantities

■1 gallon gasoline to 2.6 oz. mixing oil.

■5 liters gasoline to 100ml mixing oil.

IMPORTANT!

Mix only enough fuel for your immedi- ate needs. If fuel must be stored longer than 30 days and oil with fuel stabilizer is not used, it should first be treated with a fuel stabilizer such as StaBil™.

1.Use a container to pre-mix gasoline and oil. Pour oil in first, then add gasoline.

2.Remove the fuel filler cap by turning counterclockwise.

3.Fill the tank with the mixed fuel, then tighten the fuel filler cap securely.

4.Any spilled fuel must be wiped up completely. Make sure the unit has no fuel leaks.