1985 - 1986 Honda 250ES

Electrical Specifications

 

Ignition: CDI (capacitor discharge ignition)

Ignition timing:

Initial  13 deg  BTDC at idle

Full advance 31 deg   BTDC at 3,500 RPM

Alternator capacity: 200W @ 5,000 RPM

Battery: 12 volt  group size 10 AH 

Battery capacity: 12V -10 ampere-hours

Battery specific gravity: 1,270-1,290 (20C 68F)

Battery charging rate: 1.4 amperes maximum

Spark Plug: DR8ES-L (NGK) X24ESR-U (ND)

Spark plug gap: 0.6 - 0.7 mm (0.024 - 0.028in) 

Headlight: 12V 60W/60W bulb #

Tailight: (2) 12V 5W  bulb # 194

Neutral indicator: 12V 3W Bulb # 74

Reverse indicator: 12V 3W Bulb # 74

Voltage regulator: Transistorized non-adjustable

DC receptace: 12 Volts DC

maximum 200W (about 15 amps)

Starter motor brush and spring specs:

Brush spring tension (Mitsuba)

new 28.2 +/- 4.2 oz.

service limit 26 oz.

Brush spring tension (ND)

new 34.2 +/- 4.2 oz.

service limit 26 oz.

Brush length (Mitsuba)

new 12-12.5 mm (0.47-0.49 in) 

service limit 5.5mm (0.22in)

Brush length (ND)

new 11.7-12.3 mm (0.46-0.48 in) 

service limit 8.5mm (0.33in)

Ignition coil resistance:

Primary coil 0.18 ohms +/- 0.018 ohms

Secondary coil with spark plug cap on            9.1 K-ohms +/- 1.66 K-ohms

Secondary coil with spark plug cap off            4.1 K-ohms +/- 0.41 K-ohms

Exciter coil resistance: (black/red and ground)

50 -200 ohms

Pulse generator resistance (bleu/yellow and green/white) 325 ohms +/- 10%

Alternator charging coil resistance: 0.2-1 ohm

CDI box resistance specs: