Honda NSS250S Manual page 710

ENGINE LACKS POWER
1. Drive Train Inspection
Raise the wheel off the ground and spin it by hand.
Does the wheel spin freely?
YES
NO
2. Tire Pressure Inspection
Check the tire pressure.
Is the tire pressure correct?
YES
NO
3. Clutch Inspection
Accelerate rapidly.
Does the engine speed change according to acceleration?
YES
NO
4. Engine Performance Inspection
Accelerate lightly.
Does the engine speed increase?
YES
NO
5. Spark Plug Inspection
Remove and inspect the spark plug.
Is the spark plug in good condition?
YES
NO
6. Engine Oil Inspection
Check the oil level and condition.
Is the engine oil in good condition?
YES
NO
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– GO TO STEP 2.
– • Brake dragging
• Worn or damaged wheel bearings
• Bent axle
– GO TO STEP 3.
– • Faulty tire valve
• Punctured tire
– GO TO STEP 4.
– • Clutch slipping
• Worn clutch shoes/outer
• Weak driven face spring
• NSS250S: Weight roller stuck
– GO TO STEP 5.
– • Faulty IACV
• Clogged air cleaner
• Clogged muffler
• Faulty fuel pump
– GO TO STEP 6.
– • Plug not serviced frequently enough
• Incorrect spark plug heat range
• Incorrect spark plug gap
– GO TO STEP 7.
– • Oil level too high
• Oil level too low
• Contaminated oil
TROUBLESHOOTING
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