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4. Install the spark plug and firmly tighten it with the spark
plug wrench. If a torque wrench. If a torque wrench is
available, torque the spark plug to 148-165 inch-pounds.
Reconnect the spark plug lead.
5. Repeat the starting procedures for “ warm engine”
6. If the engine still fails to fire or start, refer to the
troubleshooting flowchart at the end of this manual.
ADJUSTING ENGING IDLE SPEED
1. Start the engine by following the procedures described on the
preceding pages.
2. Run the engine at idle speed until operating temperature is
reached (2-3 minutes)
3. Use a screwdriver to adjust the engine idle speed to
3000±200r/min
□ Turn the idle screw clockwise to increase engine idle speed.
□ Turn the idle screw counterclockwise to decrease engine idle
speed.
IMPORTANT!
Machine tubes and intake cover must be installed while
adjusting engine idle! Engine idle speed will also be affected if
either the intake cover or machine tubes are blocked, damaged
or incorrectly installed!
STOPPING THE ENGINE
1. Cool the engine by allowing it to run at idle for 2 to 3
minutes.
Idle speed adjustment
screw
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