SECTION 3
3-6
1-/ 2-Cylinder
TROUBLESHOOTING
The troubleshooting chart lists common engine symptoms related to
problems with the fuel system. lt also indicates specific malfunctions
in the fuel system which may be causing the problem so it can be
isolated more effectively. Before beginning major troubleshooting
operations on the fuel system, perform the following operations:
• Disconnect fuel tank hose from the engine. Connect a known good
tankand hose and determine if the problem persists.
• Remove and clean the engine fuel filter assembly and replace the
filter element.
• Replace filter element in the fuel tank pickup tube.
Checks
Symptom
Empty fuel tank
Low fuel in tank
Fuel tank air vent closed
Poor quality or old fuel
Water in fuel system
Fuel hose pinched
or disconnected
Restricted fuel pickup pipe or
clogged pipe filter
Faulty primer bulb
Improper or faulty
anti-siphon valve
Clogged fuel filter
Loose connector or
vacuum leak
FUEL TANK AND FILTERS
Hard to start or
will not start
Misses at low
speeds
Excessive fuel
consumption
Misses at high
speeds
Poor acceleration,
hesitation or coughs
Runs rough
and smokes
Idles well, then
slows and stops
Will not start and after fires
into exhaust housing
No acceleration,
low/full throttle RPM
Idles well but
slows when accelerated
Runs at high speed only
when hand primer is used
Engine stops
suddenly
Runs noisy
and knocks
•
•
•
•
•
•
•
•
•
•
•
••
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
To Next Page
Loading...
Need help?
General
