Yamaha F50 Service Manual

62Y3A111-36
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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...

GEN 
INFO
General information
1-3762Y3A11
— MEMO — 

62Y3A11
SPEC
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Specifications
General specifications ................................................................................... 2-1
Maintenance specifications .......................................................................... 2-5
Power unit.................................................................................................. 2-5
Lower unit .................................................................................................. 2-9
Electrical...

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...

62Y3A112-2
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* 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...

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...

62Y3A112-4
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* 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...

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)...

62Y3A112-6
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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...

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...