Yamaha 55DEHD User Manual

6885J11
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Electrical (85A models)
Item Unit
Model
85AEHD 85AED 85AET
Ignition and ignition control
system
Spark plug gap mm (in) 0.9–1.0 (0.035–0.039)
Spark plug cap resistance kΩ 4.0–6.0
Ignition timing (full retarded) Degree BTDC 1–3
Ignition timing (full advanced) Degree BTDC 23–25
Ignition coil resistance
Primary coil (B/W–B) Ω 0.18–0.24
at 20°C (68°F)
Secondary coil
(B/W–spark plug wire) kΩ 3.26–4.88
at 20°C (68°F)
CDI unit output peak voltage
(B/W–B)
at Cranking (loaded) V 130
at 1,500 r/min (loaded) V 150
at 3,500 r/min (loaded) V 150
Pulser coil output peak voltage
(W/R–W/Y, W/B–W/G)
at Cranking (unloaded) V 6.0
at Cranking (loaded) V 4.0
at 1,500 r/min (loaded) V 8.0
at 3,500 r/min (loaded) V 14.0
Pulser coil resistance Ω 256–384
at 20°C (68°F)
(W/R–W/Y, W/B–W/G)
Thermoswitch
ON temperature °C (°F) 84–90 (183–194)
OFF temperature °C (°F) 60–74 (140–165)
Lower unit (85A models)
Item Unit
Model
85AEHD 85AED 85AET
Gear backlash
Pinion-to-forward gear mm (in) 0.08–0.25 (0.0032–0.0098)
Pinion-to-reverse gear mm (in) 0.67–1.00 (0.0264–0.0394)
Pinion gear shims mm 0.10, 0.12, 0.15, 0.18, 0.30, 0.40, 0.50
Forward gear shims mm 0.10, 0.12, 0.15, 0.18, 0.30, 0.40, 0.50
Reverse gear shims mm 0.10, 0.12, 0.15, 0.18, 0.30, 0.40, 0.50
Maintenance specification
Coil resistance and peak voltage are reference data.
Measuring conditions:
Ambient temperature 20°C (68°F).
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Yamaha 55DEHD Specifications

General

Brand	Yamaha
Model	55DEHD
Category	Outboard Motor
Language	English