Specifications

13
Four Cycle Troubleshooting
As an aid in troubleshooting any piece of equipment, interview the customer, and review conditions and symptoms
of the problem. Examine exterior for clues: leaks, excessive dirt, damaged or new parts. Follow safety precautions
when working with the fuel system. See page 2-J. Avoid Gasoline Fires.
NOTE: Refer to Technician's Handbook, Form No. 692509 for a more detailed list.
*Carburetor Troubleshooting, use Technician's Handbook or Carburetor Troubleshooting Booklet, Form No.
695907.
FUEL SYSTEM
Engine Will
Not Start
Check if spark
plug is wet or dry
Wet Dry
Defective
spark plug
Review with the
customer proper priming
procedure
(3-5 primes, waiting 2
seconds between each
prime)
Restricted
air filter
Improper or
stale fuel
If equipped with a choke,
check for full travel.
Check throttle cable
and control for proper
adjustment.
Exhaust ports plugged
Check fuel supply
and fuel cap vent
Carburetion problems
due to flooding, over
priming, etc.*
Restriction in
fuel system
(filter)
Ignition System
Carburetion problem*
(bad bowl gasket)
Poor
Compression
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