Yamaha F15A, Service Manual

Page: 54 / 511

SPEC
MAINTENANCE SPECIFICATIONS (F15A)
2-7
E
Model
Item Unit
F15AMH F15AEH F15AE
F15MHW F15EHW —
Charge coil resistance (Br-L)
Ω
272 ~ 408
Pulser coil resistance (W/G-B)
Ω
234 ~ 348
Ignition coil resistance (O-B)
Primary
Ω
0.16 ~ 0.24
Secondary k
Ω
3.94 ~ 5.88
IGNITION CONTROL SYSTEM
Oil pressure switch kPa (kg/cm 2 , psi) 14.7 (0.15, 2.13)
Engine speed limiter
Rated timing r/min 6,200
Ignition off r/min 6,800
Reset r/min 6,000
STARTING SYSTEM
Fuse* A — 10/20*
STARTER MOTOR
Type — Bendix
Rating Second — 30
Output kW — 1.1
Brush length mm (in) — 12.6 (0.5)
Limit mm (in) — 6.4 (0.25)
Commutator undercut mm (in) — 2 (0.08)
Limit mm (in) — 0.8 (0.03)
CHARGING SYSTEM
Lighting coil output peak voltage
V
1
(G-G)/(G-G/W)
@ cranking 1 (500 r/min) open V — 6.5
@ cranking 2 (500 r/min) loaded V — 6.0
@ 1,500 r/min V — 21
@ 3,500 r/min V — 46
Rectifier output peak voltage
V
2
(R-B)
@ cranking 1 (500 r/min) open V — 6.0
@ 1,500 r/min V — 20
@ 3,500 r/min V — 46
Charging current* A @ 20 °C (68 °F) — 6/10*
Lighting coil resistance 6 A(G-G)
Ω
@ 20 °C (68 °F) 0.48 ~ 0.72 0.48 ~ 0.72 (for 6 A models)
10 A: (G-G/W) 0.24 ~ 0.36 (for 10 A models)
* Charging current 6 A
→
Fuse 10 A
Charging current 10 A
→
Fuse 20 A
World-
wide
USA/
CANADA