1985 ATC250R Specifications

General Specs
Model CodeTB06
Product CodeHA2
Frame VIN LocationStamped on left side of frame neck
Engine Serial LocationStamped on lower left side of crankcase
Frame Starting NumberJH3TB060*FC400001
Engine Starting NumberTB06E-2400001
Owner Manual31HA2600
Service Manual61HA201
Length1895 mm (74.6 in)
Width1120 mm (44.1 in)
Height1090 mm (42.9 in)
Seat Height760 mm (29.9 in)
Wheelbase1295 mm (51 in)
Ground Clearance120 mm (4.7 in)
Dry Weight132 kg (291.1 lb)
Caster Angle21°
Trail37 mm (1.46 in)
Tire & Rim
Front Tire Size (HxW-R)23x8-11
Rear Tire Size (HxW-R)20x10-9
Engine Type2 Stroke water cooled
Cylinder ArrangementSingle cylinder inclined 7 degrees
Displacement246 cc (15 ci)
Bore66 mm (2.6 in)
Stroke72 mm (2.8 in)
Compression Ratio8:1
Starter TypeForward kick start
Fuel TypePre-mixed 20:1
Oil Capacity - Total0.7 L (0.7 US qt; 0.6 Imp qt)
Oil Capacity - Oil Change0.61 L (0.6 US qt; 0.5 Imp qt)
Engine Dry Weight25.3 kg (55.8 lb)
Drive Train & Transmission
Clutch TypeManual wet multiplate
Transmission Type6 speed constant mesh
Primary Reduction2.652
First Gear2.570
Second Gear2.062
Third Gear1.667
Fourth Gear1.333
Fifth Gear1.083
Sixth Gear0.884
Final Reduction3.000
Gear Shift Pattern1 - N - 2 - 3 - 4 - 5 - 6
Identification MarkPE37A
TypePiston valve
Throttle Bore34 mm (1.3 in)
Main Jet#142
Pilot Jet/Slow Jet#52
Jet Needle Clip Position2nd Groove
Pilot Screw Adjustment2 Turns out
Float Level16 mm (0.6 in)
Engine Idle1400 RPM
Air Filter TypeOiled polyrethane foam
Fuel Tank Capacity9.8 L (2.6 US gal; 2.2 Imp gal)
Fuel Tank Reserve2 L (0.5 US gal; 0.4 Imp gal)
Ignition TypeCDI
CDI Identification MarkCF469 (HA2)
Spark PlugBR9ES (NGK)
Spark Plug Gap Max0.7-0.8 mm (0.028-0.031 in)
Pulse Generator50-200 Ω
Exciter Coil50-250 Ω
Lighting Coil0.1-1 Ω
Ignition Coil Primary0.16-0.2 Ω
Ignition Coil Secondary w/o Cap3690-4510 Ω
Initial Ignition Timing19.0° BTDC
Ignition Advancement TypeElectronic
Voltage12 V
Alternator Max Output159 W
Alternator Max Output RPM5000 RPM
Regulator Voltage13.5-14.5 V
Regulator Resistance100000Ω
Front Brake OperationRight Hand
Rear Brake OperationRight Foot
Front Brake TypeHydraulic Disc
Rear Brake TypeHydraulic Disc
Front SuspensionTelescopic fork
Rear SuspensionPro-link Swing arm
Front Wheel Travel250 mm (9.8 in)
Rear Wheel Travel250 mm (9.8 in)
Front Fork Oil Capacity400 cc (13.5 US fl oz; 14.1 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.