Thrush Aircraft S2R-R1340 Maintenance Manual page 96

Table 4-1: Engine Trouble Shooting Chart
TROUBLE
Engine will not
start
Engine will not
continue running
after starting.
4-26
THRUSH AIRCRAFT, INC – MODEL S2R-R1340
AIRCRAFT MAINTENANCE MANUAL
PROBABLE CAUSE
Faulty ignition switch
Incorrect starting procedure
Fouled or iced spark plugs
Insufficient cranking speed
Magneto incorrectly timed
Faulty primer
Moisture or oil on distributor
Water in fuel
Liquid lock
Spark plug connectors oily, dirty or
cracked
Incorrect throttle setting
Negative valve clearances
Defective magneto
Incorrect throttle setting
Incorrect mixture control setting
Under priming or over priming
Valves sticking or in need of
adjustment
Lack of fuel
(13 sheets)
REMEDY
Replace switch
Check starting instruments
Replace spark plugs
Check battery and starter
Time magnetos
Replace primer
Replace magneto
Drain fuel tank until the
presence of water is
negative. Refill with proper
grade of fuel.
Drain lower cylinders
Clean or replace spark
plugs
Reset throttle
Refer to Engine
Manufacturer's Manual
Replace magneto
Reset throttle
Adjust mixture control
Increase or decrease
priming as necessary.
Adjust valves or replace
cylinder
Check fuel gage. Replenish
with fuel
Effective: 01/01/2008