Service manual

Page 29 of 151
5-3 Troubleshooting
Engine Will Not Start
• No fuel in fuel tank
• Clogged fuel tube
• Too much fuel in cylinder
• No spark from spark plug
(malfunctioning ignition system )
• Clogged air cleaner
• Malfunctioning carburetor choke
• Malfunctioning throttle
Mixture Too Lean
• Clogged fuel jet
• Vacuum piston stuck and closed
• Malfunctioning float valve
• Fuel level too low in float chamber
• Clogged fuel tank cap vent
• Clogged fuel filter
• Obstructed fuel pipe
• Clogged air vent hose
• Air remaining in intake system
Engine Dies After Starting
• Malfunctioning carburetor choke
• Incorrect ignition timing
• Malfunctioning carburetor
• Dirty engine oil
• Air remaining in intake system
• Idle speed too low
Mixture too rich
• Clogged air jet
• Malfunction of float valve
• Fuel level too high in float chamber
• Malfunction of carburetor choke
• Dirty air cleaner
Rough idle
• Malfunctioning ignition system
• Incorrect idle speed
• Malfunctioning carburetor
• Fuel dirty
Intermittent Misfires When Accelerating
• Malfunctioning ignition system
Late Ignition Timing
• Malfunctioning ignition system
• Malfunctioning carburetor
Loss of Power
• Fuel system clogged
• Malfunctioning ignition system
Copyright ©2008-2009 ETON America, llc., all rights reserved.
www.Get2itParts.com
www.Get2itParts.com
www.Get2itParts.com