🔎 Yamaha 2SN Reference Library — Exploded parts diagrams (10 diagrams), specifications, common issues, and maintenance checklist.
Parts Diagrams & OEM Part Numbers
Expand the sections below to view detailed exploded parts diagrams and find the exact OEM replacement components for your Yamaha 2SN.
▶BRACKET (26 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
(6A1-43111-00-EK) |
BRACKET, CLAMP |
| 2 |
(6A1-43105-00-00) |
HANDLE TRANSOM CLM |
| 3 |
6E0-43118-00-00 |
HANDLE, TRANSOM CLP |
| 4 |
90254-04M00-00 |
PIN, SPRING TYPE |
| 5 |
648-43114-01-00 |
PAD, TRANSOM CLAMP |
| 6 |
6A1-43311-01-EK |
BRACKET, SWIVEL 1 |
| 7 |
6A1-43312-00-EK |
BRACKET, SWIVEL 2 |
| 8 |
646-42537-01-00 |
BUSHING, PIVOT SHAFT |
| 9 |
93210-46044-00 |
O-RING |
| 10 |
97395-06045-00 |
BOLT, HEXAGON |
| 11 |
92990-06600-00 |
WASHER, PLATE |
| 12 |
95380-06600-00 |
NUT, HEXAGON |
| 13 |
93700-06M03-00 |
NIPPLE, GREASE |
| 14 |
663-45119-00-00 |
CAP, GREASE NIPPLE |
| 15 |
646-42528-00-00 |
PLATE, FRICTION |
| 16 |
90122-06004-00 |
BOLT, WING |
| 17 |
90501-12272-00 |
SPRING, COMPRESSION |
| 18 |
90101-08217-00 |
BOLT |
| 19 |
90202-08022-00 |
WASHER, PLATE |
| 20 |
92990-08100-00 |
WASHER, SPRING |
| 21 |
95380-08600-00 |
NUT |
| 22 |
6A1-43351-00-00 |
RECEIVER, THRUST |
| 23 |
6A1-43371-00-00 |
BOLT, RECEIVER |
| 24 |
90201-06040-00 |
WASHER, PLATE |
| 25 |
90175-06008-00 |
NUT, WING |
| 26 |
91690-20006-00 |
PIN, SPRING |
▶CARBURETOR (36 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
6A1-14301-02-00 |
CARB ASSEMBLY 1 |
| 2 |
(646-14381-70-00) |
BODY, FLOAT CHAMBER |
| 3 |
646-14384-00-00 |
GASKET, FLOAT CHMBR |
| 4 |
646-14385-00-00 |
FLOAT |
| 5 |
646-14387-00-00 |
ARM, DIAPHRAGM |
| 6 |
652-14386-00-00 |
PIN, FLOAT |
| 7 |
646-14343-48-00 |
JET, MAIN #96 (#96) |
| 8 |
6A1-14341-00-00 |
NOZZLE, MAIN |
| 9 |
98580-04010-00 |
SCREW, PAN HEAD |
| 10 |
6A1-14448-00-00 |
LEVER, CHOKE VALVE |
| 11 |
(6A1-14217-00-00) |
VALVE, CHOKE |
| 12 |
646-14357-00-00 |
WASHER, PLAIN |
| 13 |
6A1-14356-00-00 |
WASHER, SPRING |
| 14 |
646-14358-00-00 |
NUT |
| 15 |
6A1-14390-00-00 |
NEEDLE VALVE ASSEMBLY |
| 16 |
6A1-14398-10-00 |
GASKET |
| 17 |
6A1-14167-00-00 |
CONNECTOR, BANJO |
| 18 |
6A1-14358-10-00 |
NUT |
| 19 |
646-14211-02-00 |
SCREW, PILOT ADJUSTING |
| 20 |
646-14212-01-00 |
SPRING, PILOT ADJUSTING |
| 21 |
646-14312-08-00 |
VALVE, THROTTLE 1 |
| 22 |
6A1-14116-00-00 |
NEEDLE |
| 23 |
646-14137-00-00 |
CLIP |
| 24 |
646-14136-00-00 |
SEAT, SPRING |
| 25 |
646-14331-01-00 |
SPRING, THROTTLE VALVE |
| 26 |
646-14158-00-00 |
TOP, MIXING CHAMBER |
| 27 |
6A1-14497-00-00 |
STAY, THROTTLE WIRE |
| 28 |
646-14321-00-00 |
SCREW, THROTTLE |
| 29 |
626-14373-10-00 |
COVER, PLUNGER CAP |
| 30 |
6A1-14314-00-00 |
BAR, THROTTLE |
| 31 |
6A1-14163-00-00 |
SPACER |
| 32 |
646-14229-01-00 |
O-RING |
| 33 |
6A1-14127-00-00 |
CLIP |
| 34 |
646-14125-01-00 |
SCREW |
| 35 |
6A1-14358-00-00 |
NUT |
| 36 |
6A1-W0093-01-00 |
CARBURETOR REPAIR KIT |
▶COWLING FUEL (53 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
6A1-42741-10-00 |
APRON 1 |
| 2 |
6A1-42771-10-00 |
APRON 2 |
| 3 |
6A1-W0070-22-00 |
GRAPHIC SET |
| 4 |
(6A1-42792-00-00) |
MARK 2 |
| 5 |
98780-05012-00 |
SCREW, FLAT HEAD |
| 6 |
90183-05M00-00 |
NUT, SPRING |
| 7 |
97890-06025-00 |
SCREW, PAN HEAD |
| 8 |
97890-06040-00 |
SCREW, PAN HEAD |
| 9 |
92995-06100-00 |
WASHER, SPRING |
| 10 |
92990-06600-00 |
WASHER, PLATE |
| 11 |
6A1-24110-01-00 |
FUEL TANK COMP |
| 12 |
6A1-24610-01-00 |
CAP ASSY |
| 13 |
620-24631-02-00 |
SCREW, AIR |
| 14 |
90430-04005-00 |
GASKET |
| 15 |
90430-14117-00 |
GASKET |
| 16 |
646-24615-01-00 |
GASKET, PLATE 1 |
| 17 |
90501-10374-00 |
SPRING, COMPRESSION |
| 18 |
92990-04200-00 |
WASHER |
| 19 |
90501-10260-00 |
SPRING, COMPRESSION |
| 20 |
646-24241-00-00 |
INDICATOR 1 |
| 21 |
6A1-24198-00-00 |
SEAT, RUBBER |
| 22 |
97313-06018-00 |
BOLT |
| 23 |
90201-06M30-00 |
WASHER, PLATE |
| 24 |
95380-06600-00 |
NUT, HEXAGON |
| 25 |
6A1-24181-00-00 |
DAMPER, LOCATING 1 |
| 26 |
6A1-24500-02-00 |
FUEL COCK ASSY 1 |
| 27 |
6A1-24311-00-00 |
PIPE, FUEL 1 |
| 28 |
90467-08004-00 |
CLIP |
| 29 |
6A1-41637-00-00 |
KNOB, MAGNETO CONTROL |
| 30 |
97780-30710-00 |
SCREW, TAPPING |
| 31 |
(6A1-41212-00-00) |
ARM, ACCEL |
| 32 |
6A1-14365-00-00 |
PIN, CLEVIS |
| 33 |
99080-04600-00 |
CIRCLIP |
| 34 |
98503-05025-00 |
SCREW, PAN HEAD |
| 35 |
90501-12M16-00 |
SPRING, COMPRESSION |
| 36 |
92990-05200-00 |
WASHER, PLAIN |
| 37 |
6A1-14441-02-00 |
SILENCER, INTAKE 2 |
| 38 |
6A1-14442-00-00 |
SPACER |
| 39 |
6A1-82550-02-00 |
ENGINE STOP SWITCH ASSY |
| 40 |
6A1-82541-00-00 |
WIRE, LEAD |
| 41 |
95380-08700-00 |
NUT |
| 42 |
98580-05010-00 |
SCREW, PAN HEAD |
| 43 |
98580-05010-00 |
SCREW, PAN HEAD |
| 44 |
92990-05600-00 |
WASHER, PLATE |
| 45 |
90173-05M00-00 |
NUT, SQUARE |
| 46 |
6A1-42677-01-00 |
GRAPHIC, FRONT |
| 47 |
6A1-41271-00-00 |
KNOB, CHOKE |
| 48 |
93210-08M29-00 |
O-RING |
| 49 |
98680-04035-00 |
SCREWOVAL HEAD |
| 50 |
6A1-82375-10-00 |
COVER, PLUG CAP |
| 51 |
98580-05012-00 |
SCREW, PAN HEAD |
| 52 |
92990-05600-00 |
WASHER, PLATE |
| 53 |
90183-05M00-00 |
NUT, SPRING |
▶CRANKCASE CYLINDER PISTON (36 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
(6A1-W0090-10-00) |
CRANK-CYLINDERASSEMBLY |
| 2 |
6A1-15100-60-94 |
CRANKCASE ASSEMBLY |
| 3 |
90336-06001-00 |
PLUG, TAPER |
| 4 |
650-14485-02-00 |
PIPE, JOINT |
| 5 |
624-11379-00-00 |
VALVE, CHECK |
| 6 |
99530-10014-00 |
PIN, DOWEL |
| 7 |
97313-06040-00 |
BOLT, HEXAGON |
| 8 |
92990-06600-00 |
WASHER, PLATE |
| 9 |
6A1-11181-A0-00 |
GASKET, CYLINDER HEAD 1 |
| 10 |
6A1-11111-01-94 |
HEAD, CYLINDER 1 |
| 11 |
97395-06025-00 |
BOLT |
| 12 |
92990-06600-00 |
WASHER, PLATE |
| 13 |
6A1-13610-00-00 |
REED VALVE ASSY |
| 14 |
6A1-W0004-00-00 |
REED SET |
| 15 |
6A1-13621-00-00 |
GASKET, VALVE SEAT |
| 16 |
6A1-15771-00-00 |
STAY 1 |
| 17 |
97313-06060-00 |
BOLT, HEXAGON |
| 18 |
90445-07M32-00 |
HOSE (L120) |
| 19 |
90467-06016-00 |
CLIP |
| 20 |
NGK-B5HS0-00-00 |
PLUG, SPARK (NGK B5HS) |
| 21 |
6A1-11400-00-00 |
CRANKSHAFT ASSY |
| 22 |
93306-00409-00 |
BEARING |
| 23 |
93306-30204-00 |
BEARING |
| 24 |
93310-210M0-00 |
BEARING |
| 25 |
646-11631-01-98 |
PISTON (STD) |
| 26 |
646-11633-00-00 |
PIN, PISTON |
| 27 |
93450-11021-00 |
CIRCLIP |
| 28 |
646-11601-21-00 |
PISTON RING SET (050MM O/S) |
| 29 |
93102-20108-00 |
OIL SEAL |
| 30 |
90201-35300-00 |
WASHER, PLATE |
| 31 |
93102-15M32-00 |
OIL SEAL |
| 32 |
6A1-24141-00-00 |
PROTECTOR, FUEL TANK |
| 33 |
90105-06M23-00 |
BOLT FLANGE |
| 34 |
6A1-42678-10-00 |
GRAPHIC, REAR |
| 35 |
90465-08028-00 |
CLAMP |
| 36 |
6A1-W0001-00-00 |
POWER HEAD GASKET KIT |
▶FLYWHEEL MAGNETO (19 parts)
| Ref |
OEM Part # |
Part Name |
| 2 |
6A1-81350-20-00 |
ROTOR ASSEMBLY |
| 3 |
6A1-81309-20-00 |
BASE, MAGNETO |
| 4 |
6A1-81311-20-00 |
COIL, IGNITION 1 |
| 5 |
90159-05040-00 |
SCREW, WITH WASHER |
| 6 |
806-81321-20-00 |
CONTACT BRKR ASSEMBLY |
| 7 |
90159-04036-00 |
SCREW, WITH WASHER |
| 8 |
624-81325-20-00 |
CONDENSER 1 |
| 9 |
116-81331-20-00 |
LUBRICATOR |
| 10 |
110-81346-21-00 |
SCREW, PAN HEAD |
| 11 |
650-82340-10-00 |
HIGH TENSION CORD ASSEMBLY 1 |
| 12 |
95303-10600-00 |
NUT |
| 13 |
92990-10100-00 |
WASHER, SPRING |
| 14 |
97313-06030-00 |
BOLT |
| 15 |
92995-06100-00 |
WASHER, SPRING |
| 16 |
92990-06600-00 |
WASHER, PLATE |
| 17 |
663-82370-01-00 |
PLUG CAP ASSY |
| 18 |
90446-10M05-00 |
HOSE |
| 19 |
6A1-81362-00-00 |
COVER, HOLE |
| 20 |
90280-04M06-00 |
KEY, WOODRUFF |
▶LOWER DRIVE (43 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
6A1-45300-03-EK |
LOWER UNIT ASSEMBLY |
| 2 |
99999-01868-00 |
LOWER CASING ASSEMBLY |
| 3 |
6A1-45316-09-00 |
BUSHING, DR SHAFT |
| 4 |
6A1-45316-09-00 |
BUSHING, DR SHAFT |
| 5 |
6A1-45181-00-EK |
PLATE |
| 6 |
90340-08M04-00 |
PLUG, STRAIGHT SCREW |
| 7 |
90430-08020-00 |
GASKET |
| 8 |
97395-06030-00 |
BOLT |
| 9 |
92990-06600-00 |
WASHER, PLATE |
| 10 |
6A1-45510-01-00 |
DRIVE SHAFT ASSY |
| 11 |
93604-09066-00 |
PIN, DOWEL |
| 12 |
93103-11051-00 |
OIL SEAL |
| 13 |
646-45534-00-03 |
SHIM (T:030MM) |
| 14 |
90214-11M01-00 |
WASHER, CLAW |
| 15 |
646-45551-00-00 |
PINION |
| 16 |
99009-06600-00 |
CIRCLIP |
| 17 |
93306-00001-00 |
BEARING |
| 18 |
646-45567-00-05 |
SHIM (T:050MM) |
| 19 |
646-45560-00-00 |
GEAR |
| 20 |
90250-03M10-00 |
PIN, STRAIGHT |
| 21 |
93103-10052-00 |
OIL SEAL |
| 22 |
646-45360-00-EK |
LOWERCASING CAP AY |
| 23 |
646-45363-00-00 |
GKT, LOWERCASING CP |
| 24 |
97390-06014-00 |
BOLT |
| 25 |
92990-06600-00 |
WASHER, PLATE |
| 26 |
6A1-45943-00-00 |
PROPELLER (PLASTIC 4 X 7-1/4"-A |
| 27 |
91490-30040-00 |
PIN, COTTER |
| 28 |
99999-02129-00 |
COVER |
| 29 |
93210-19123-00 |
O-RING |
| 30 |
93210-19123-00 |
O-RING |
| 31 |
93103-11051-00 |
OIL SEAL |
| 32 |
646-44323-00-00 |
OUTER PLATE, CARTRIDGE |
| 33 |
646-44352-01-00 |
IMPELLER |
| 34 |
646-44322-00-00 |
INSERT, CARTRIDGE |
| 35 |
6A1-44325-00-00 |
PROTECTOR, OIL SEAL |
| 36 |
97390-05016-00 |
BOLT, HEXAGON |
| 37 |
92990-05100-00 |
WASHER, SPRING |
| 38 |
6E0-44366-00-00 |
DAMPER, WATER SEAL |
| 39 |
6A1-44361-00-00 |
TUBE, WATER |
| 40 |
646-44365-00-00 |
DAMPER, WATER SEAL |
| 41 |
6A1-W0078-01-00 |
WATER PUMP REPAIR KIT |
| 42 |
6A1-W0001-21-00 |
LOWER UNIT GASKET KIT |
| 43 |
93605-18M04-00 |
PIN, DOWEL |
▶MANUAL STARTER (14 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
6A1-15710-00-00 |
STARTER ASSY |
| 2 |
6A1-15711-00-00 |
CASE, STARTER |
| 3 |
6A1-15714-00-00 |
DRUM, SHEAVE |
| 4 |
6A1-15767-00-00 |
SPRING |
| 5 |
6A1-15741-00-00 |
PAWL, DRIVE |
| 6 |
6A1-15713-00-00 |
SPRING, STARTER |
| 7 |
6A1-15717-00-00 |
SHAFT, STARTER |
| 8 |
6A1-15705-00-00 |
SPRING, DRIVE PAWL |
| 9 |
97013-06012-00 |
BOLT |
| 10 |
6A1-15755-01-00 |
HANDLE, STARTER |
| 12 |
6A1-15723-00-94 |
PULLEY, STARTER |
| 13 |
92703-06012-00 |
SCREW, FLAT HEAD |
| 14 |
97313-06016-00 |
BOLT, HEXAGON |
| 15 |
92990-06600-00 |
WASHER, PLATE |
▶OPTIONAL LIGHTING COIL (2 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
6E0-81303-80-00 |
LIGHTING COIL ASSY |
| 2 |
90159-05040-00 |
SCREW, WITH WASHER |
▶REPAIR KIT (4 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
6A1-W0001-00-00 |
POWER HEAD GASKET KIT |
| 2 |
6A1-W0093-01-00 |
CARBURETOR REPAIR KIT |
| 3 |
6A1-W0001-21-00 |
LOWER UNIT GASKET KIT |
| 4 |
6A1-W0078-01-00 |
WATER PUMP REPAIR KIT |
▶UPPER CASING (23 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
6A1-45111-02-EK |
CASING, UPPER |
| 2 |
97395-06030-00 |
BOLT |
| 3 |
92990-06600-00 |
WASHER, PLATE |
| 4 |
646-45113-00-00 |
GASKET, UPPER CASIN |
| 5 |
93210-19123-00 |
O-RING |
| 6 |
646-14623-01-00 |
GASKET, EXST PIPE |
| 7 |
6A1-41137-00-5B |
GUIDE, EXHAUST |
| 8 |
6A1-14613-A0-00 |
GASKET, EXHAUST PIPE |
| 9 |
93605-15065-00 |
PIN, DOWEL |
| 10 |
97395-06025-00 |
BOLT |
| 11 |
92990-06600-00 |
WASHER, PLATE |
| 12 |
646-42111-01-EK |
HANDLE, STEERING |
| 13 |
646-42119-02-00 |
GRIP, STEERING HANDLE |
| 14 |
90101-08094-00 |
BOLT |
| 15 |
92990-08100-00 |
WASHER, SPRING |
| 16 |
92990-08200-00 |
WASHER, PLAIN |
| 17 |
90201-09117-00 |
WASHER, PLATE |
| 18 |
95380-08600-00 |
NUT |
| 19 |
646-42591-00-00 |
HOLDER, SHEAR PIN |
| 20 |
6A1-45151-00-00 |
COVER, UPPER CASING |
| 21 |
98580-06016-00 |
SCREW, PAN HEAD |
| 22 |
92990-06600-00 |
WASHER, PLATE |
| 23 |
6A1-45115-00-00 |
GASKET, UPPER CASING |
