90999 Mercury STUD, CARBURETOR

April 22, 2001
(Revised May 2003)
U-97
A-64
AU-52
S-41
H-35
O-73
Safety THE EMERGENCY STOP CIRCUIT MUST BE CHANGEDON CERTAIN 3508, 3508B, 3512, 3512B, 3516, AND 3516B ENGINES
7451 PI10060
This Program must be administered assoon as possible. When reporting the repair, use "PI10060" as the Partnumber and "7751" as the Group Number, "56" as the Warranty Claim DescriptionCode and "T" as the SIMS Description Code. Exception: If the repair isdone after failure, use "PI10060" as the Part Number, "7751" as the GroupNumber, "96" as the Warranty Claim Description Code, and "Z" as the SIMSDescription Code. This Revised Service Letter replacesthe April 22, 2001 (Revised April 2003) Service Letter. Changes have beenmade to the Affected Product.PROBLEM
After an E-stop shutdown a 3500/3500B Engine maybegin cranking if the E-stop button is pulled out when the ECS switch isin the Start/Run position.
AFFECTED PRODUCT
***Group 1 - Engines withstandard wiring harness***
Model Identification Number
3508 3PS168-189, 314-329
3508B 2HW99-100, 102, 104-118,122, 125, 127-1296PN176, 232, 235, 426-427, 443, 454, 479-484,531, 5513DM81, 86-87, 92-95, 97, 100-107, 111-113,118-123, 127-131, 133-143, 145-147, 151-1632BM113-1427SM27-95, 97-196, 198-255
3512 3MS162-163, 167, 187,1896PM373RS307-3123WS333
3512B 4TN35-68, 71-98, 100,103-105, 107-118, 122-136, 138-140, 142-205, 207-242, 266-2717HM164-177, 180-206, 2098EM249-256, 258, 273-278, 289-292, 295-298,300, 302, 307, 308, 311-318, 322-3244AW167-325, 327-3606WN78-80, 87, 95, 99-101, 105, 127-132, 134,138, 149, 150, 161, 164, 165, 176, 197, 207, 212, 216, 221-222, 232-233,244, 246, 247, 249, 271, 278, 289, 291-293, 295, 298, 300-302, 314, 316,318, 333, 334, 342, 343, 345, 351, 353, 364, 374, 376, 387, 391, 424, 4258RM128, 136, 144-146, 149, 150, 156, 165, 171-174,176-178, 194, 195, 212, 215, 226-232, 236, 237, 240-262, 269, 272-274,278, 286-290, 292, 297-299, 306, 309, 310, 321, 322, 326-328, 336, 338,351, 366, 367, 375-377, 379-385, 392, 393, 394, 398-399, 407, 408, 419-421,435, 4361PW349-3522EZ215-218, 220
3516 3NS215-218, 220, 225,232, 2333SS297-3193XS404-4073CW228-231
3516B 1NW112-117, 119-121,124, 1252JW181, 182, 184-187, 191, 192, 1966HN106, 112, 118-122, 124-127, 134-137, 141-143,149, 150, 165, 166, 169, 171, 172, 178, 180, 188, 194-198, 201-204, 206,208, 211-212, 215, 221-223, 225-226, 228-232, 237, 239, 247-249, 257-258,260, 262-263, 270-274, 276, 278, 295, 300, 303, 305, 309, 314-316, 326,334, 335, 338, 340, 346, 351, 360-361, 370, 373-376, 379, 382-383, 393,395, 399-401, 408, 410, 411, 413-416, 426-428, 449, 451, 474, 475, 478-480,488, 492, 495, 4967RN229, 245, 253-278, 280, 284-286, 288-295,298-307, 311, 317-318, 331, 333, 335, 354, 383, 387, 390, 393-394, 396-407,409-422, 424, 426, 428-439, 443-458, 460, 471-472, 478-486, 495-496, 498-499,529, 532-533, 536, 539-545, 561, 563, 587-588, 590-592, 595, 598-601, 604,606-607, 614-615, 617, 619, 638-640, 661-663, 652, 653, 665-668, 670, 675,677-678, 680-689, 699, 701, 703-705, 709, 718, 730, 784-786, 788-792, 795,797-799, 810, 833-835, 847, 857-860, 878-879, 884, 812, 917, 925-926, 930,932-933, 936-938, 948-950, 958, 969-9704BW331-337, 373, 3742FW138, 139, 141, 164, 1668CN134-137, 142-1698KN58-104, 106-115, 118-154, 156-195, 197,199-234, 236, 237, 299, 315-318, 352, 353, 378, 379, 390-3959AN102, 105-110, 114-122, 124-130, 132-135,141-144, 151-157, 171-174, 178-179
***Group 2 ? Engines withprice list premium wire harness option***
Model Identification Number
3508B 3DM82-85, 88-91, 96,98, 99, 108-110, 114-117, 124-126, 132, 144, 148-150, 164-1667SM96
3512 3RS313
3512B 4TN69, 70, 101, 102,106, 119-121, 137, 141, 2067HM178, 179, 197, 207, 2088EM246-248, 257, 259-272, 279-288, 293, 294,299, 301, 303-306, 309, 310, 319-321
3516B 8CN138-141
3516B 8KN105, 116, 117, 155,196, 198, 2359AN103, 104, 111-113, 123, 131, 136-140, 145-150,158-170, 175-177, 180PARTS NEEDED
Table 1 below lists parts needed for engines equippedwith a standard wiring harness. Table 2 lists parts needed for enginesequipped with a premium wiring harness. These harnesses are easy to distinguishvisually. A standard wiring harness is covered with a plastic yellow braid.A premium wiring harness consists of several larger wires routed insideof a metal channel. A premium harness is not covered by yellow braid.
Table 1 - Parts needed for engines with standardwiring harness.
PartNumber Description Quantity
9Y2921 Relay 2
1111323 ContactBlock 1
1741438