*This part replaces obsolete part #: 491055S ((Rc12yc - Resistor)), 594056 ((Resistor)), 4217, 491055s, 491055, 72347GS and 72347.
This is an OEM replacement part and is sold individually. The purpose of this spark plug is to deliver an electric current from an ignition system to the combustion chamber of a gas fueled engine, igniting the air fuel mixture by the spark. Over time a Spark Plug will become fouled because the air/fuel ratio may be set wrong, worn piston rings, carbon build up, and other factors. It is best to replace a dirty spark plug, rather than trying to clean it. It is important to gap your spark plug according to the owners manual of your product. |
This part is compatible with the following machines:
124432 Series (8001) Engine
15Z100 Series (0111) Engine
12A100 Series (0130-0938) Engine
12A300 Series (0100-0917) Engine
12A400 Series (0100-0110) Engine
12C100 Series (0007-0251) Engine
12C300 Series (0131-0279) Engine
12C400 Series (0100-0208) Engine
12D100 Series (0110-0940) Engine
12D200 Series (0113, 0355) Engine
12D300 Series (0007-0019) Engine
12D400 Series (0007-0110) Engine
12E100 Series (0007-0268) Engine
15B100 Series (0018-0645) Engine
15C100 Series (0111-0939) Engine
15D100 Series (0111-0918) Engine
15Z300 Series (0111-0112) Engine
12B400 Series Engine
0486-0 Portable Generator
0487-0 Portable Generator
0488-0 Portable Generator
0488-1 Portable Generator
0490-0 Portable Generator
0491-0 Portable Generator
0567-0 Portable Generator
0567-1 Portable Generator
1006-1 Portable Generator
1019-1 Portable Generator
1019-3 Portable Generator
1020-0 Portable Generator
1020-1 Portable Generator
1021-0 Portable Generator
1189-0 Portable Generator
1190-0 Portable Generator
1277-0 Portable Generator
9785-0 8,000 Watt (Rev 0 6/5/95) Generator
9783-0 6,500 Watt Generator
9779-1 6,500 XL Generator
9779-0 6,500 XL 6,500 Watt Generator
9778-0 5,500XL 5,500 Watt Generator
9777-4 4,000 XL Generator
9777-3 4,000 XL Generator
9777-2 4,000 XL Generator
9777-0 4,000 XL Generator
9753-0 4,000 XL Generator
9704-0 3,500 XL 3,500 Watt Generator
9608-0 3,500 Watt Generator
9586-0 3,500 Watt Generator
9514-3 3,500 Watt Generator
9514-2 3,500 Watt Generator
9540-2 3,500 Watt Generator
9514-1 3,500 Watt Generator
9538-2 3,000 XL Generator
9514-0 3,500 Watt Generator
9538-1 3,000 Watt Generator
9903-0 6,500 XL (Rev 0 12/22/94) Generator
9885-3 5,500 XL Generator
9880-1 3,250 XE Generator
9885-0 5,500 XL (Rev 0 7/2/95) Generator
9878-0 4,000 XL Generator
9861-0 6,500 Watt Generator
9860-0 5,500 Watt (Revised) Generator
0485-0 6,300 PSI Pressure Washer
9441-3 3,500 XL 3,500 Watt (9/95) Generator
9411-1 3,500 XL 3,500 Watt Generator
9441-4 3,500 XL 3,500 Watt Generator
9404-1 8,000 Watt Generator
9374-0 8,000 Watt Generator
9162-7 8,000 Watt Generator
9162-1 8,000 Watt Generator
9162-0 8,000 Watt Generator
9163-0 8,000 Watt Generator
1788-0 Portable Generator
1789-0 Portable Generator
5366-2 Portable Generator
9898-2 2,500 PSI Pressure Washer
9898-1 2,500 PSI (08/95) Pressure Washer
9897-1 2,200 PSI Pressure Washer
9585-3 6,600 PSI Pressure Washer
9585-4 6,600 PSI Pressure Washer
0485-1 6,300 PSI Pressure Washer
0503-0 2,300 PSI Pressure Washer
0503-1 2,300 PSI Pressure Washer
0504-0 2,600 PSI Pressure Washer
0504-1 2,600 PSI Pressure Washer
0602-0 5,700 PSI Pressure Washer
0603-0 6,600 PSI Pressure Washer
0606-0 12,000 Pressure Washer
0640-0 125 PSI Pressure Washer
1-0100 (1971) Lawn Tractor
71286 (250000001-250999999)(2005) Lawn Tractor
71286 (260000001-260999999)(2006) Lawn Tractor
71286 (270000001-270999999)(2007) Lawn Tractor
71429 (250000001-250999999)(2005) Lawn Tractor
74350 (230000001-230999999)(2003) Lawn Tractor
74350 (240000001-240000178)(2004) Lawn Tractor
74350 (240000179-240999999)(2004) Lawn Tractor
74351 (240000001-240999999)(2004) Lawn Tractor
74352 (250000001-250999999)(2005) Lawn Tractor
74353 (260000001-260999999)(2006) Lawn Tractor
74501 (210000001-210999999)(2001) Lawn Tractor
74501 (220000001-220999999)(2002) Lawn Tractor
74502 (220000001-220999999)(2002) Lawn Tractor
74570 (200000001-200999999)(2000) Lawn Tractor
74570 (210000001-210999999)(2001) Lawn Tractor
74570 (220000001-220999999)(2002) Lawn Tractor
74570 (240000001-240999999)(2004) Lawn Tractor
74570 (250000001-250999999)(2005) Lawn Tractor
74570 (260000001-260999999)(2006) Lawn Tractor
74602 (240000001-240999999)(2004) Lawn Tractor
74704 (250000001-250999999)(2005) Lawn Tractor
77102 (200000001-200999999)(2000) Lawn Tractor
77104 (200000001-200999999)(2000) Lawn Tractor
77106 (200000001-200999999)(2000) Lawn Tractor
71192 (5900001-5999999)(1995) Lawn Tractor
71192 (6900001-6999999)(1996) Lawn Tractor
71193 (6900001-6999999)(1996) Lawn Tractor
71217 (7900001-7999999)(1997) Lawn Tractor
71218 (6900001-6999999)(1996) Lawn Tractor
71218 (7900001-7999999)(1997) Lawn Tractor
71218 (8900001-8999999)(1998) Lawn Tractor
71219 (7900001-7999999)(1997) Lawn Tractor
71219 (8900001-8999999)(1998) Lawn Tractor
71220 (9900001-9999999)(1999) Lawn Tractor
71221 (9900001-9999999)(1999) Lawn Tractor
71223 (200000001-200999999)(2000) Lawn Tractor
71223 (210000001-210999999)(2001) Lawn Tractor
71223 (220000001-220010000)(2002) Lawn Tractor
71223 (220010001-220999999)(2002) Lawn Tractor
71223 (230000001-230999999)(2003) Lawn Tractor
71212 (200000001-200999999)(2000) Lawn Tractor
71215 (7900001-7999999)(1997) Lawn Tractor
71215 (8900001-8999999)(1998) Lawn Tractor
71216 (59000001-59999999)(1995) Lawn Tractor
71193 (7900001-7999999)(1997) Lawn Tractor
71196 (6900001-6999999)(1996) Lawn Tractor
71196 (7900001-7999999)(1997) Lawn Tractor
71196 (8900001-8999999)(1998) Lawn Tractor
71197 (9900001-9999999)(1999) Lawn Tractor
71197 (200000001-200999999)(2000) Lawn Tractor
71198 (9900001-9999999)(1999) Lawn Tractor
71199 (240000001-240999999)(2004) Lawn Tractor
71199 (250000001-250999999)(2005) Lawn Tractor
71223 (240000001-240999999)(2004) Lawn Tractor
2. Removed spark plug.
3. Connected spark plug to cable and placed on cylinder head for a ground path.
4. Cranked engine and observed no spark.
5. Removed shutoff wire from magneto and repeated (isolates any issues with other wiring), still no spark.
6. Install new magneto at farthest back position and snug the bolts.
7. Rotate flywheel until magnets align with magneto.
8. Place business card between magneto and flywheel.
9. Loosen magneto bolts and allow magnets to pull magneto to flywheel.
10. Tighten magneto bolts.
11. Remove card and rotate flywheel by hand to ensure there is no contact (will be very close)
12. Reinstall spark plug and connect wire.
13. Start and run for test, then reinstall engine covers.
It was pretty simple after I determined that my problem was the push rods. I removed the bent rod installed the new one I purchased from eReplacementParts.com. Adjusted the valves(You can find several youtube videos to guide you through this procedure). The engine started right up and I mowed about two hours with it this weekend.
I wish I could tell you why the push rod bent, but I can't. If anyone has an explnation I would love to here it.
Replaced the spark plug
Replaced the old air filter
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