Cellboost 427W Manual Do Utilizador

6-7-06 - Fifth Proof

• Idle speed adjusting screw 

improperly set.

• See engine manual.

• Idle fuel adjusting needle 

improperly set (some 

models).

• See engine manual.

• Low compression.

• See engine manual.

• Restricted fuel tank cap vent. • Open vent on fuel tank cap.
• Engine overheated-cooling 

system/air circulation 

problem.

• Clean cooling fins and 

remove any debris from 

around engine.

Engine Overheats

• Air intake/grass screen, 

cooling fins, or cooling 

shrouds clogged.

• Clean cooling fins and 

remove any debris from 

around engine.

• Excessive engine load.

• Reduce load on engine.

• Low crankcase oil level.

• Add engine oil.

• High crankcase oil level.

• Drain engine oil and replace 

with proper quantity.

• Faulty carburetor.

• See engine manual.

• Lean fuel mixture.

• See engine manual.

• SMART-SPARK™ 

malfunction (applicable 

models).

• See engine manual.

Engine Knocks

• Excessive engine load.

• Reduce engine load.

• Low crankcase oil level.

• Add engine oil.

• Old or improper fuel.

• Drain fuel system and 

replace with fresh, clean fuel.

• Internal wear or damage.

• See engine manual.

• Hydraulic lifter malfunction.

• See engine manual.

• Quality of fuel.

• Drain fuel system and 

replace with fresh, clean fuel.

• Incorrect grade of oil.

• Drain engine oil and replace 

with proper grade of oil.