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14

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Change engine oil after the first five hours of 
operation, and every twenty-five hours thereafter. 

Drain oil while engine is warm. Follow the instructions 
given below:

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Drain the fuel from the tank by running the engine 
until the fuel tank is empty.

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Remove oil fill dipstick.

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Tip unit on its side to drain through the oil fill tube.   

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When engine is drained of all oil, refill with 
approximately 18 oz. of fresh oil. Refer to Gas 
And Oil Fill-up in OPERATION section. 

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Replace oil fill dipstick and tighten. 

The air cleaner prevents damaging dirt, dust, etc., 
from entering the carburetor and being forced into the 
engine and is important to engine life and 
performance. The air cleaner consists of a pleated 
filter. Never run the engine without an air cleaner 
completely assembled. 

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Loosen screw and tilt plastic housing cover on 
side of engine down. See Figure 14.

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Remove pleated filter from plastic housing cover 
and replace with clean or new filter.

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Tilt cover up into place and tighten screw.

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Clean the spark plug and reset the gap to.030" at 
least once a season or every 50 hours of 
operation. See Figure 15. Spark plug 
replacement is recommended at the start of each 
season. Refer to engine parts list for correct 
spark plug type. 

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Inspect muffler periodically, and replace if 
necessary. 

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If your engine is equipped with a spark arrester 
screen assembly, remove after every 50 hours of 
use for cleaning and inspection. Replace if 
damaged.

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Clean engine by removing dirt and debris with a 
cloth or brush.

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Frequently remove grass clippings, dirt, and 
debris from cooling fins, air intake screen, levers, 
and linkage. This will help ensure adequate 
cooling and engine speed.