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B1 CHECK THE CABLE CONDITION
- Disconnect the accelerator cable from the cam at the throttle body.
- Make sure the disconnected end of the accelerator cable does not come in contact with any of the surrounding parts.
- Is the cable core wire kinked, frayed or damaged?
1. YES : INSTALL a new accelerator cable. REFER to Accelerator Cable .
2. NO : Go to B2.
B2 RESTRICTED CABLE MOVEMENT
- With the cable disconnected from the cam at the throttle body, pull the core wire through its entire travel from the pedal end and then from the throttle end.
- Is the cable movement rough, sticky or restricted?
1. YES : INSTALL a new accelerator cable. REFER to Accelerator Cable .
2. NO : Go to B3.
B3 RESTRICTED THROTTLE BODY LEVER MOVEMENT
- Disconnect the speed control actuator cable from the throttle body lever.
- Cycle the throttle body lever through its entire range of movement.
- Is the throttle body lever movement rough, sticky or restricted?
1. YES : REFER to the Introduction - Gasoline Engines for diagnosis and testing of the throttle body.
2. NO : REFER to SPEED CONTROL .

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Pinpoint Test B: High Engine Idle Speed