13
Engine Will Not
Start
Check if spark plug is
wet or dry
Wet Dry
Defective spark plug
Review with customer priming or choking
procedure (3-5 primes, if equipped, waiting 2
seconds between each prime)
Restricted air filter
If equipped with a choke, check for full travel.
Check throttle cable and control for proper
adjustment.
Improper fuel mix or stale fuel
Carburetion problem*
(bad bowl gasket)
Sheared or partially sheared
flywheel key
Check fuel supply and fuel cap vent
Carburetion problems due to
flooding, over priming, etc.*
Restriction in fuel system
(filter
, screen)
Ignition System Poor compression
Crankcase seals or gaskets leaking Damaged reed, port plugs, seals or gaskets
Should more extensive repair be needed, we recommend you contact a local Tecumseh Servicing Dealer for repair.
Repair manuals are also available from your local dealer or direct from Tecumseh. A complete list of the available
manuals can be found at the end of this book.
NOTE: Refer to Technician's Handbook for a more detailed list of remedies.
Two Cycle Troubleshooting
The following is provided as a basic troubleshooting guide. Its use requires a complete review of all conditions
and symptoms. Always examine the exterior for clues: leaks, excessive dirt, or obvious damage. Some repairs will
require the assistance of a Tecumseh Servicing Dealer.
Preparation
Before troubleshooting any system problem, see original equipment manufacturer’s (O.E.M.) instructions.
Make your troubleshooting easier by preparing as follows:
• Work in a clean, well-lighted place.
• Keep proper tools and materials nearby.
• Keep an adequate supply of clean petroleum-based solvent.
To reduce the risk of serious injury or death from fires and/or explosions, NEVER use flammable
solvents (e.g., gasoline) to clean serviceable parts. Use a water-based, non-flammable solvent
such as Tecumseh Degreaser Cleaner.
NEVER use compressed air to clean debris from yourself or your clothing. When using compressed
air to clean or dry serviceable parts:
• Wear appropriate eye protection.
• Use only approved air blow nozzles.
CAUTION
• Air pressure must not exceed 30psi (206kPa).
• Shield yourself and bystanders from flying debris.
FUEL SYSTEM
another free manual from www.searstractormanuals.com
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