NORMAL
OVER HEATING
FUSED SPOT DEPOSIT
Has gray or light tan deposits on the firing
tip.
Light gray or white insulator with small gray
brown or black spots. Electrode has a bluish
burnt appearance.
Has spotty or melted deposits resembling
blisters or bubbles.
Replace spark plug.
May be caused by engine overheating,
loose spark plug, wrong fuel type, plug heat
range too hot or incorrect ignition timing.
Replace spark plug.
LEAD FOULED
CARBON FOULED
WORN
Has dark black, gray, tan or yellow deposits.
May have a fused glazed coating on the in-
sulator tip.
Black dry fluffy carbon deposits are found
on insulator tip, electrodes and exposed
shell surfaces.
Has severely eroded or worn electrodes.
Caused by normal wear.
Replace spark plug.
Caused by highly leaded gasoline.
Replace spark plug.
Weak ignition, plug heat range too cold, fuel
mixture too rich or excessive idling may be
the cause.
Replace spark plug.
GAP BRIDGED
OIL FOULED
PRE–IGNITION
Gap between electrodes is closed by de-
posit build up.
Wet black deposits can be found on elec-
trodes, insulator and in the bore.
Electrodes are melted and the insulator
may be blistered. Metallic deposits on the
insulator indicate engine damage.
May be caused by carbon or oil fouling.
Replace spark plug.
Excessive oil entering the combustion
chamber past worn valve guides, valve
stems, rings, piston and/or cylinder bore.
Engine overheating, burnt valves, plug heat
range too hot, incorrect ignition timing or
wrong type of fuel are causes.
Replace spark plug.
Replace spark plug.
Greensmaster Flex 18/21
Page 3 – 7
Engine
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
|---|---|
| Tags | Toro Greensmaster 04018, Toro Greensmaster 04019, Toro Greensmaster 04022, Toro Greensmaster 04024, Toro Greensmaster 04025, Toro Greensmaster 04030, Toro Greensmaster 04031 |
| Download File |
|
| Document Type | Service Manual |
| Language | English |
| Product Brand | Toro. Customer Service Representatives are available by phone:
Monday - Friday 7:30 a.m. to 9:00 p.m. (CDT) - Saturday 8:00 a.m. to 8:00 p.m. (CDT) - Sunday 10:00 a.m. to 8:00 p.m. (CDT)
Canada 1-888-225-4886 USA 1-888-384-9939, Lawn Mower |
| Document File Type | |
| Publisher | toro.com |
| Wikipedia's Page | Toro Company |
| Copyright | Attribution Non-commercial |
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