Parts for Mercury Marine 1250 Crankshaft, Pistons & Connecting Rods
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Reference numbers in this diagram can be found in a light blue row below — scroll down to order.
#1 | 436-3187A 2 | CRANKSHAFT ASSEMBLY (NOT AS SHOWN) (1, required per assembly) |
436-3187A 2 - Crankshaft [ More info ] Unavailable |
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436-3187A 4 - Crankshaft [ More info ] Unavailable |
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436-4842A 3 - Crankshaft [ More info ] Unavailable |
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436-6646A 2 - Crankshaft [ More info ] Unavailable |
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436-9072A 1 - Crankshaft,NLA [ More info ] Unavailable |
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#1 | 436-3187A 4 | CRANKSHAFT ASSEMBLY (NOT AS SHOWN) (,1 required per assembly) |
#2 | 11-52901 | NUT, FLYWHEEL TO CRANKSHAFT (,1 required per assembly) |
#3 | 30-32117 | BEARING, BALL - UPPER (1,1 required per assembly) |
30-32117 - Ball Bearing [ More info ] Unavailable |
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30-62567 - Ball Bearing [ More info ] Unavailable |
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#4 | 30-20080 | BEARING, BALL - LOWER (1,1 required per assembly) SERIAL 00000000-02709827 |
30-20080 - Ball Bearing [ More info ] Unavailable |
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30-53853 - Ball Bearing [ More info ] Unavailable |
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30-63742 - Ball Bearing [ More info ] Unavailable |
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#4 | 30-53853 | BEARING, BALL - LOWER (,1 required per assembly) SERIAL 02709828-09999999 |
#5 | 535-3190A 1 | CENTER MAIN BEARING ASSEMBLY (2,2 required per assembly) |
#6 | 17-20032 | DOWEL PIN, CENTER MAIN BEARING (4,4 required per assembly) |
#7 | 29-48410 | BEARING, NEEDLE - OUTER RACE (112,112 required per assembly) |
29-48410 - Needle Bearing [ More info ] Unavailable |
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29-71422 1 - Needle Bearing - Priced Individually [ More info ] |
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#8 | 26113 | RACE, OUTER (PAIR) (2,2 required per assembly) |
26113 - Outer Race [ More info ] Unavailable |
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#9 | 53-26933 | RING, SMAP - OUTER RACE (2,2 required per assembly) |
#10 | 17-47246 | DOWEL PIN, STEPPED (2,2 required per assembly) |
#11 | 10-22968 | SCREW, CENTER MAIN BEARING CLAMPING (4,4 required per assembly) |
#12 | 11-46887 | NUT, BEARING CLAMPING SCREW (4,4 required per assembly) |
11-46887 - Nut, (1/4-28) [ More info ] Unavailable |
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#13 | 537-3300A 1 | MAIN BEARING ASSEMBLY, VALVE TYPE (3,3 required per assembly) |
537-3300A 1 - Main Bearing [ More info ] Unavailable |
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540-3943A 1 - Main Bearing [ More info ] Unavailable |
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540-7238A 2 - REED BLOCK ASSY,NLA [ More info ] Unavailable |
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#15 | 10-45775 | SCREW, MAIN BEARING CLAMPING (6,6 required per assembly) |
#16 | 11-45774 | NUT, MAIN BEARING CLAMPING SCREW (6,6 required per assembly) |
#17 | 34-48082A 1 | REED SET, MATCHED - MAIN BEARING (3,3 required per assembly) |
#18 | 34-48081 | REED STOP, MAIN BEARING REED VALVES (12,12 required per assembly) |
48081 - 48081 - GASKET KIT [ More info ] Unavailable Replaced by 1395-879194024 |
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18-7006-1 - Carburetor Gasket Set, 1399-1717 and 1399-2015 [ More info ] |
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#19 | 10-48080 | SCREW, REED STOP MOUNTING (36,36 required per assembly) |
#20 | 472-3186A 4 | PISTON AND PISTON PIN ASSEMBLY "G" TYPE LOCK RING (6, required per assembly) SEE DRAWING BELOW |
742-3186A 4 - Piston [ More info ] Unavailable |
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742-3512A 4 - Piston [ More info ] Unavailable |
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#21 | 40-45740 | LOCK RING, PISTON PIN G" TYPE LOCK RING (12, required per assembly) SEE DRAWING BELOW |
#22 | 39-45155A12 | RING, PISTON (1/16") G" TYPE LOCK RING (2, required per assembly) SEE DRAWING BELOW |
39-45155A12 - Piston Ring [ More info ] Unavailable |
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#20 | 742-3512A 2 | PISTON AND PISTON PIN ASSEMBLY "C" TYPE LOCK RING (6,6 required per assembly) SEE DRAWING BELOW |
#21 | 40-52035 | LOCK RING, PISTON PIN "C" TYPE LOCK RING (12,12 required per assembly) SEE DRAWING BELOW |
#23 | 618-3185A 2 | CONNECKTING ROD AND CAP ASSEMBLY (6, required per assembly) |
618-3185A 2 - CONNECTING ROD [ More info ] Unavailable |
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622-3666A 2 - CONNECTING ROD [ More info ] Unavailable |
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622-3666A 5 - CONNECTING ROD [ More info ] Unavailable |
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622-3666A 6 - CONNECTING ROD [ More info ] Unavailable |
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622-3666A10 - CONNECTING ROD [ More info ] Unavailable |
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622-4850A 4 - CONNECTING ROD [ More info ] Unavailable |
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#23 | 622-3666A 2 | CONNECTING ROD AND CAP ASSEMBLY (,6 required per assembly) |
#24 | 31-47245A 1 | BEARING ASSEMBLY, CRANKPIN (6,6 required per assembly) |
31-47245A 1 - Roller Bearing [ More info ] Unavailable |
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31-55332A 1 - ROLLER BRG Note: Priced Individually [ More info ] Unavailable |
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31-58859A 1 - ROLLER BRG Note: Priced Individually [ More info ] Unavailable |
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31-61424A 2 - ROLLER BRG Note: Priced Individually [ More info ] Unavailable |
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31-63075A 1 - Roller Bearing - Priced Individually [ More info ] Unavailable |
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31-62596A 1 - Connecting Rod Bearings And Cage, Single [ More info ] |
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18-4038 - Needle Bearings, Without Cage, 31-62596A1 [ More info ] |
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#25 | 10-47240 | SCREW, CONNECTING ROD (12,12 required per assembly) |
10-47240 - Screw, NLA [ More info ] Unavailable |
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#26 | 11-49091 | NUT, CONNECTING ROD SCREW (12,12 required per assembly) |
11-49091 - Nut - Priced Individually [ More info ] Unavailable |
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#27 | 29-47270 | BEARING NEEDLE - PISTON PIN (174,174 required per assembly) |
29-8M0214934 - BRG-NEEDLE @200 [ More info ] Unavailable |
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#28 | 12-47247 | WASHER, NEEDLE LOCATING (12,12 required per assembly) |