Yamaha F50 Service Manual
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62Y3A111-36 1 2 3 4 5 6 7 8 I Break-in In the test run, the break-in operation is per- formed in the following three stages. 1. One hour a at 2,000 r/min or at approxi- mately half throttle. 2. One hour b at 3,000 r/min or 3/4 throttle and one minute out of every ten at full throttle. 3. Eight hours c at any speed, however, avoid running at full speed for more than five minutes. È Hour After test run 1. Check for water in the gear oil. 2. Check for fuel leakage in the cowling. 3. After a test run and while the engine is at idle, flush the cooling water passage with fresh water using the flushing kit. S62Y1580 0 1210 Predelivery checks
62Y3A11 SPEC 1 2 3 4 5 6 7 8 I Specifications General specifications ................................................................................... 2-1 Maintenance specifications .......................................................................... 2-5 Power unit.................................................................................................. 2-5 Lower unit .................................................................................................. 2-9 Electrical .................................................................................................... 2-9 Power unit................................................................................................ 2-12 Lower unit ................................................................................................ 2-16 Electrical .................................................................................................. 2-16 Dimensions .............................................................................................. 2-19 Tightening torques....................................................................................... 2-29 Specified torques ..................................................................................... 2-29 General torques ....................................................................................... 2-31
SPECSpecifications 2-162Y3A11 General specifications2 Item UnitModel USA———F50TR Canada—F50TH—F50TR Worldwide F50AEHD F50AEHT F50AED F50AET Dimension Overall length mm (in) 1,329 (52.3) 718 (28.3) Overall width mm (in) 361 (14.2) Overall height (L) mm (in) 1,397 (55.0) (X) mm (in)—1,511 (59.5)—1,511 (59.5) Boat transom height (L) mm (in) 508 (20.0) (X) mm (in)—635 (25.0)—635 (25.0) Weight (with aluminum propeller) (L) kg (lb) 108 (238) 112 (247) 104 (229) 108 (238) (X) kg (lb)—115.5 (255)—111.5 (246) Performance Maximum output kW (hp) @ 5,500 r/min36.8 (50) Full throttle operating range r/min 5,000–6,000 Maximum fuel consumption L (US gal, lmp gal)/hr @ 6,000 r/min17.3 (4.57, 3.81) Power unit Type In-line, 4-stroke, OHC, 8 valves Cylinder quantity 4 Displacement cm 3 (cu. in) 935 (57.1) Bore × stroke mm (in) 63.0 × 75.0 (2.48 × 2.95) Compression ratio 9.3 Carburetor quantity 4 Control system Tiller handle Remote control Starting system Electric Ignition control system Microcomputer (CDI) Ignition timing Degree BTDC 5 ± 3–BTDC 35 ± 3 Alternator output V, A 12, 10 Enrichment system Prime Start Choke valve control— Spark plugs DPR6EA-9 (NGK) Cooling system Water Exhaust system Through propeller boss Lubrication system Wet sump
62Y3A112-2 1 2 3 4 5 6 7 8 I * PON: Pump Octane Number (Research Octane Number + Motor Octane Number)/2 RON: Research Octane Number Fuel and oil Fuel type Regular unleaded gasoline Fuel rating *PON RON86 91 Engine oil type 4-stroke motor oil Engine oil grade API SAESE, SF, SG, SH 10W-30, 10W-40, or 20W-40 Engine oil quantity (with oil filter replacement) L (US qt, lmp qt)2.2 (2.3, 1.9) (without oil filter replacement) L (US qt, lmp qt)2.0 (2.1, 1.8) Gear oil type Hypoid gear oil Gear oil grade API SAEGL-4 90 Gear oil quantity L (US qt, lmp qt)0.43 (0.45, 0.38) Bracket Trim angle (at 12 degree boat transom)Degree–4–20 Tilt-up angle Degree 69 Steering angle Degree 40 + 40 Drive unit Gear shift positions F-N-R Gear ratio 1.85 (24/13) Reduction gear type Spiral bevel gear Clutch type Dog clutch Propeller shaft type Spline Propeller direction (rear view)Clockwise Propeller identification mark G Electrical Battery capacity Ah (kC) 70–100 (252–360) Minimum cold cranking performanceA 380 Item UnitModel USA———F50TR Canada—F50TH—F50TR Worldwide F50AEHD F50AEHT F50AED F50AET General specifications
SPECSpecifications 2-362Y3A11 Item UnitModel USA T50TR——— Canada T50TR——— Worldwide FT50BET FT50CEHD FT50CED FT50CET Dimension Overall length mm (in) 718 (28.3)1,384 (54.5)718 (28.3) Overall width mm (in) 361 (14.2) Overall height (L) mm (in) 1,436 (56.5) Boat transom height (L) mm (in) 508 (20.0) Weight (with aluminum propeller) (L) kg (lb) 112 (247) 111.5 (246) 108 (238) 112 (247) Performance Maximum output kW (hp) @ 5,500 r/min36.8 (50) Full throttle operating range r/min 5,000–6,000 Maximum fuel consumption L (US gal, lmp gal)/hr @ 6,000 r/min17.3 (4.57, 3.81) Power unit Type In-line, 4-stroke, OHC, 8 valves Cylinder quantity 4 Displacement cm 3 (cu. in) 935 (57.1) Bore × stroke mm (in) 63.0 × 75.0 (2.48 × 2.95) Compression ratio 9.3 Carburetor quantity 4 Control system Remote controlTiller handleRemote control Starting system Electric Ignition control system Microcomputer (CDI) Ignition timing Degree BTDC 5 ± 3–BTDC 35 ± 3BTDC 5 ± 3–BTDC 25 ± 3 BTDC 5 ± 3–BTDC 35 ± 3 (Depending on market) Alternator output V, A 12, 10 Enrichment system Prime Start Choke valve control— Spark plugs DPR6EA-9 (NGK) Cooling system Water Exhaust system Through propeller boss Lubrication system Wet sump
62Y3A112-4 1 2 3 4 5 6 7 8 I * PON: Pump Octane Number (Research Octane Number + Motor Octane Number)/2 RON: Research Octane Number Fuel and oil Fuel type Regular unleaded gasoline Fuel rating *PON RON86 91 Engine oil type 4-stroke motor oil Engine oil grade API SAESE, SF, SG, SH 10W-30, 10W-40, or 20W-40 Engine oil quantity (with oil filter replacement) L (US qt, lmp qt)2.2 (2.3, 1.9) (without oil filter replacement) L (US qt, lmp qt)2.0 (2.1, 1.8) Gear oil type Hypoid gear oil Gear oil grade API SAEGL-4 90 Gear oil quantity L (US qt, lmp qt)0.61 (0.64, 0.54) Bracket Trim angle (at 12 degree boat transom)Degree–4–20 Tilt-up angle Degree 69 Steering angle Degree 40 + 40 Drive unit Gear shift positions F-N-R Gear ratio 2.33 (28/12)2.31 (30/13) Reduction gear type Spiral bevel gear Clutch type Dog clutch Propeller shaft type Spline Propeller direction (rear view)Clockwise Propeller identification mark K Electrical Battery capacity Ah (kC) 70–100 (252–360) Minimum cold cranking performanceA 380 Item UnitModel USA T50TR——— Canada T50TR——— Worldwide FT50BET FT50CEHD FT50CED FT50CET General specifications
SPECSpecifications 2-562Y3A11 Maintenance specifications2 Power unit Item UnitModel USA———F50TR Canada—F50TH—F50TR Worldwide F50AEHD F50AEHT F50AED F50AET Power unit Minimum compression pressure*kPa (kgf/cm 2, psi)840 (8.4, 119) Lubrication oil pressure at 55 °C (131 °F), with 10W-30 engine oilkPa (kgf/cm 2, psi) @ 900 r/min100 (1.0, 14) Cylinder heads Warpage limit mm (in) 0.1 (0.004) (lines indicate straightedge position) Cylinder head journal inside diametermm (in) 37.00–37.02 (1.4567–1.4575) Cylinders Bore size mm (in) 63.00–63.01 (2.480–2.481) Taper limit mm (in) 0.08 (0.003) Out-of-round limit mm (in) 0.05 (0.002) Pistons Piston diameter (D) mm (in) 62.95–62.96 (2.478–2.479) Measuring point (H) mm (in) 5 (0.2) Piston-to-cylinder clearance mm (in) 0.04–0.06 (0.0016–0.0024) Oversize piston diameter 1st mm (in) + 0.25 (0.01) 2nd mm (in) + 0.50 (0.02) Piston pins Outside diameter mm (in) 15.965–15.970 (0.6285–0.6287) Piston rings Top ring Dimension B mm (in) 1.17–1.19 (0.046–0.047) Dimension T mm (in) 2.39–2.41 (0.094–0.095) End gap mm (in) 0.15–0.30 (0.006–0.012) Side clearance mm (in) 0.04–0.08 (0.0016–0.003) * Measuring conditions: Ambient temperature 20 °C (68 °F), wide open throttle, with plugs disconnected from all cylinders. The figures are for reference only.
62Y3A112-6 1 2 3 4 5 6 7 8 I 2nd ring Dimension B mm (in) 1.47–1.49 (0.058–0.059) Dimension T mm (in) 2.49–2.51 (0.098–0.099) End gap mm (in) 0.30–0.50 (0.012–0.020) Side clearance mm (in) 0.03–0.07 (0.001–0.003) Oil ring Dimension B mm (in) 2.34–2.46 (0.092–0.097) Dimension T mm (in) 2.75 (0.108) End gap mm (in) 0.20–0.70 (0.008–0.028) Side clearance mm (in) 0.05–0.19 (0.002–0.008) Camshafts Intake (A) mm (in) 30.89–30.99 (1.2161–1.2200) Exhaust (A) mm (in) 30.82–30.92 (1.2135–1.2175) Intake and exhaust (B)mm (in) 25.95–26.05 (1.0217–1.0256) Camshaft journal diameter #1 mm (in) 36.93–36.94 (1.4539–1.4543) #2, #3, #4 mm (in) 36.94–36.95 (1.4543–1.4547) Camshaft journal oil clearance #1 mm (in) 0.055–0.100 (0.0022–0.0039) #2, #3, #4 mm (in) 0.045–0.090 (0.0018–0.0035) Maximum camshaft runout mm (in) 0.04 (0.0016) Rocker arm shafts Outside diameter mm (in) 15.98–15.99 (0.6291–0.6295) Rocker arms Inside diameter mm (in) 16.00–16.01 (0.6299–0.6303) Valves Valve clearance (cold) Intake mm (in) 0.20 ± 0.05 (0.008 ± 0.002) Exhaust mm (in) 0.30 ± 0.05 (0.012 ± 0.002) Head diameter (A) Intake mm (in) 29.9–30.1 (1.177–1.185) Exhaust mm (in) 25.9–26.1 (1.020–1.027) Face width (B) Intake mm (in) 1.84–2.97 (0.072–0.117) Exhaust mm (in) 1.98–3.11 (0.078–0.122) Seat contact width (C) Intake mm (in) 0.9–1.1 (0.035–0.043) Exhaust mm (in) 0.9–1.1 (0.035–0.043) Item UnitModel USA———F50TR Canada—F50TH—F50TR Worldwide F50AEHD F50AEHT F50AED F50AET Maintenance specifications
SPECSpecifications 2-762Y3A11 Margin thickness (D) Intake mm (in) 0.6–1.0 (0.024–0.039) Exhaust mm (in) 0.7–1.1 (0.028–0.043) Stem diameter Intake mm (in) 5.48–5.49 (0.2157–0.2161) Exhaust mm (in) 5.46–5.47 (0.2150–0.2153) Guide inside diameter Intake and exhaust mm (in) 5.50–5.51 (0.2165–0.2169) Stem-to-guide clearance Intake mm (in) 0.01–0.03 (0.0004–0.0012) Exhaust mm (in) 0.03–0.05 (0.0012–0.0020) Stem runout limit mm (in) 0.03 (0.0012) Valve springs Free length mm (in) 39.85 (1.569) Minimum free length mm (in) 37.85 (1.490) Tilt limit mm (in) 1.7 (0.07) Connecting rods Small-end inside diameter mm (in) 15.985–15.998 (0.6293–0.6298) Big-end inside diameter mm (in) 36.000–36.024 (1.4173–1.4183) Crank pin oil clearance mm (in) 0.016–0.040 (0.0006–0.0015) Big-end bearing thickness Yellow mm (in) 1.500–1.504 (0.0591–0.0592) Red mm (in) 1.496–1.500 (0.0589–0.0591) Pink mm (in) 1.492–1.496 (0.0587–0.0589) Green mm (in) 1.488–1.492 (0.0586–0.0587) Crankshaft Crankshaft journal Diameter mm (in) 42.984–43.000 (1.6923–1.6929) Crank pin Diameter mm (in) 32.984–33.000 (1.2986–1.2992) Runout limit mm (in) 0.04 (0.0016) Crankcase Crankcase main journal inside diametermm (in) 46.000–46.024 (1.8110–1.8120) Crankshaft main journal oil clearancemm (in) 0.012–0.036 (0.0005–0.0014) Crankcase main journal bearing thickness Yellow mm (in) 1.502–1.506 (0.0591–0.0593) Red mm (in) 1.498–1.502 (0.0590–0.0591) Pink mm (in) 1.494–1.498 (0.0588–0.0590) Green mm (in) 1.490–1.494 (0.0587–0.0588) Item UnitModel USA———F50TR Canada—F50TH—F50TR Worldwide F50AEHD F50AEHT F50AED F50AET