Check The Fuel/Oil Mixture; To Check The Fuel In The Carburetor - MTD 25cc Professional Shop Manual

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P25 Series of Engines

Check the fuel/oil mixture

To check the fuel in the carburetor:

1. Get a plain piece of paper.
2. Divide it into four sections and label them:
• Plain gas
• Two cycle mix
• Gas from carburetor
• Straight oil
3. Get a sample of fuel from the carburetor and pour it
on the section of the paper labeled sample from car-
buretor. See Figure 5.1.
4. Place a sample of two cycle mix where it says two
cycle mix, straight gas with straight gas and straight
oil with straight oil. See Figure 5.2.
5. Match the sample from the carburetor to the other
three samples. This will show if the proper mix is
being used or not. See Figure 5.3.
6. Before returning to service, put fresh fuel/oil mix in
the fuel tank.
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Figure 5.1
Figure 5.2
Figure 5.3