Lesson 3/Learning Event 2
Step 1. Remove the air cleaner cup on models 1A08-1 and 1A08-2. On engine model 1A08-3,
check the service indicator first. If the indicator is in the red, remove the air cleaner cup. If the
engine will now start and run, service the air cleaner. If the engine fails to continue running, go
on to step 2.
Step 2. Check the fuel filter to see if it is clogged or if the filter element is dirty. Remove the
outlet line from the filter to check the flow of fuel. If no fuel or a very small flow of fuel is
noticed at the outlet side of the filter, remove and clean the fuel filter. If the fuel flow is
sufficient, go on to step 3.
Step 3. Remove the fuel line from the fuel pump to the carburetor. Turn the engine over using
the starting rope. If the fuel flow is coming out of the fuel pump in a steady spurt, go on to step 4.
If no fuel is seen coming out or a weak flow is noticed, have the fuel pump replaced.
Step 4.
Check the carburetor and throttle controls for adjustment.
If the engine misses or runs erratically, perform the
Engine Misses or Runs Erratically.
following steps in sequence.
Step 1. Check to be sure the ignition switch is not damaged. Remove the spark plug cable
from the spark plug. Ground the cable by holding the cable nut against the side of the spark plug
with the spring approximately 1/4 inch from the spark plug on any metal part of the engine. Turn
the engine over using the starting rope. If a spark jumps from the spring to the engine, remove
the spark plug, reconnect the cable, and ground the spark plug to the side of the engine. Turn the
engine over and see if there is a spark at the electrode end of the plug. If there is a good strong
spark at the spark plug go on to step 2. If no spark is seen at the spark plug or cable, adjust the
contact assembly. Be sure the timing is correct.
Step 2. Check the fuel filter to see if it is clogged or if the filter element is dirty. Remove the
outlet line from the filter to check the flow of fuel. If no fuel or a very small flow of fuel is
noticed at the outlet side of the filter, remove and clean the fuel filter. If the fuel flow is sufficient
go on to step 3.
Step 3. Remove the air cleaner cup on models 1A08-1 and 1A08-2. On engine model 1A08-3,
check the service indicator first. If it shows in the red, remove the air cleaner element. If the
engine starts, the air cleaner needs servicing.
Engine Surges or Overspeeds. Check the governor adjustment.
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