1986 ATC250ES Specifications

General Specs
Model NameBig Red
Model CodeTE04
Product CodeHA0
Frame VIN LocationOn left side of frame neck
Engine Serial LocationOn top of right side cover directly under exhaust pipe
Frame Starting NumberJH3TE040*GM200001
Engine Starting NumberTE04E-6000001
Owner Manual31HA0610
Service Manual61HA002
Length1887 mm (74.3 in)
Width1137 mm (44.8 in)
Height1038 mm (40.9 in)
Seat Height705 mm (27.8 in)
Wheelbase1237 mm (48.7 in)
Ground Clearance165 mm (6.5 in)
Dry Weight186 kg (410.1 lb)
Caster Angle19.5°
Trail0 mm (0 in)
Tire & Rim
Front Tire Size (HxW-R)25x12-9
Rear Tire Size (HxW-R)25x12-9
Engine TypeOHC single cylinder 4 stroke air cooled
Cylinder ArrangementSingle cylinder inclined 20 degrees
Valve TrainOverhead camshaft - chain drive
Displacement246 cc (15 ci)
Bore74 mm (2.9 in)
Stroke57.3 mm (2.3 in)
Compression Ratio9:1
Cylinder Compression1128-1324 kPa (164-192 psi)
Horsepower18 PS (17.8 hp)
Torque1.9 kg/m3 (13.7 ft-lb)
Starter TypeElectric starter and forward kick start
Oil Capacity - Total2.5 L (2.6 US qt; 2.2 Imp qt)
Oil Capacity - Oil Change2.1 L (2.2 US qt; 1.8 Imp qt)
Engine Dry Weight46.3 kg (102.1 lb)
Drive Train & Transmission
Clutch TypeAutomatic wet multidisc centrifugal
Transmission Type5 speed constant mesh with reverse
Primary Reduction2.407
First Gear4.083
Second Gear2.389
Third Gear1.609
Fourth Gear1.179
Fifth Gear0.906
Final Reduction5.684
Gear Shift PatternForward: N - SL - 1 - 2 - 3 - 4, Reverse: N - R
Identification MarkQA07A
TypeDual valve
Throttle Bore27 mm (1.1 in)
Main Jet#130
Pilot Jet/Slow Jet#38
Starter Jet#80
Jet Needle Clip Position2nd Groove
Pilot Screw Adjustment2 Turns out
Float Level18.5 mm (0.7 in)
Engine Idle1400 RPM
Fuel Tank Capacity12 L (3.2 US gal; 2.6 Imp gal)
Fuel Tank Reserve2 L (0.5 US gal; 0.4 Imp gal)
Ignition TypeCDI
CDI Identification MarkCI-91 (HA8)
Spark PlugDR8ES-L (NGK), X24ESR-U (Denso)
Spark Plug Gap Max0.6-0.7 mm (0.024-0.028 in)
Pulse Generator290-360 Ω
Exciter Coil50-200 Ω
Lighting Coil0.2-1 Ω
Ignition Coil Primary0.1-0.2 Ω
Ignition Coil Secondary w/o Cap3690-4510 Ω
Ignition Coil Secondary w/ Cap7440-10760 Ω
Initial Ignition Timing13.0° BTDC
Full Advance Ignition Timing31.0° BTDC
Ignition Advancement TypeElectronic
Voltage12 V
Power TypeFull Wave Rectified DC
Alternator Max Output200 W
Alternator Max Output RPM5000 RPM
Regulator Voltage14-15 V
Front Brake OperationRight hand
Rear Brake OperationLeft hand & right foot
Front Brake TypeCable operated drum
Rear Brake TypeCable operated drum
Front SuspensionTelescopic fork
Rear SuspensionSwingarm
Front Wheel Travel115 mm (4.5 in)
Rear Wheel Travel110 mm (4.3 in)
Front Fork Oil Capacity113 cc (3.8 US fl oz; 4 Imp fl oz)

Information on this page is provided in good faith that it is accurate, but in no way is the data guanteed to be accurate. If there are any mistakes, please contact me.