Disassembling And Servicing - Cub Cadet 8454 Service Manual

CHAPTER 2 8454

3. DISASSEMBLING AND SERVICING

3.1 TROUBLESHOOTING
Symptom
Engine Does Not Start
(Starter Does Not Run)
Engine Revolution is Not Smooth
2-24
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www.mymowerparts.com
Probable Cause
• Not fuel
• Air in the fuel system
• Water in the fuel system
• Fuel pipe clogged
• Fuel filter clogged
• Excessively high viscosity of fuel
or engine oil at low temperature
• Fuel with low cetane number
• Fuel leak due to loose injection
pipe retaining nut
• Incorrect injection timing
• Fuel camshaft worn
• Injection nozzle clogged
• Injection pump malfunctioning
• Fuel transfer pump
malfunctioning
• Seizure of transfer pump
malfunctioning piston, cylinder
bore or bearing
• Compression leak from cylinder
• Improper valve seating, valve
spring broken, valve seized
• Improper valve timing
• Piston ring and bore worn
• Excessive valve clearance
• Battery discharged
• Starter malfunction
• Starter switch malfunction
• Wiring disconnected
• Fuel filter clogged or dirty
• Air cleaner clogged
• Fuel leak due to loose injection
pipe retaining nut
• Injection pump malfunctioning
• Incorrect nozzle opening
pressure
• Nozzle stuck or clogged
• Fuel over flow pipe clogged
• Governor malfunctioning
Solution
Replenish fuel
Vent air
Change fuel and repair or flush
fuel system
Clean
Clean or replace
Use the specified fuel or engine
oil
Use the specified fuel
Tighten nut
Adjust
Replace
Clean or replace
Repair or replace
Repair or replace
Repair or replace
Replace head gasket, tighten
cylinder head screws, glow plug
and nozzle holder
Repair or replace
Correct or replace timing gear
Repair or replace
Adjust
Charge
Repair or replace
Repair or replace
Connect
Clean or replace
Clean or replace
Tighten nut
Repair or replace
Adjust
Repair or replace
Clean
Repair
D569-W02 May-2003