Helix Specs:
Dimensions
Overall length
89.2 in
Overall Width
29.3 in
Overall Height
53.3 in
Wheel Base
63.8 in
Ground Clearance
5.9 in
Dry Weight
(Before 91) 342 lbs (After 91) 349 lbs
Curb Weight
370 lbs
Frame
Type
Backbone
Front Suspension, travel
Bottom Link, 3.2 in
Rear Suspension, travel
Power unit swing arm, 3.8 in
Vehicle load capacity
350 lbs
Front Tire size
110/100-12 67J, Tubeless
Rear Tire size
120/90-10 65J, Tubeless
Fuel Capacity
3.18 US Gal
Tire Pressure
Up to 200 lbs load
Front 24 PSI
Rear 28 PSI
Up to load capacity
Front 24 PSI
Rear 32 PSI
Engine
Type
Water Cooled 4 stroke, OHC engine
Cylinder arrangement
Single cylinder
Bore and Stoke
2.83 x 2.36 in
Displacement
244 cc ( 14.9 cu-in )
Compression Ratio
10.0 : 1
Engine oil capacity (initial)
1.06 US Qt.
Engine oil capacity (after change)
.85 US Qt
Lubrication System
Forced pressure and wet sump
Coolant capacity ( Engine and radiator)
1.5 US Qt
Coolant capacity (Reserve Tank)
.42 US Qt
Coolant capacity (Total)
1.93 US Qt
Air Filtration
Paper filter
Cylinder compression at 600 RPM
213 PSI
Valve timing Intake opens
5 degrees BTDC at 1mm lift
Valve timing Intake closes
30 degrees ABDC at 1mm lift
Valve timing Exhaust opens
40 degrees BBDC at 1mm lift
Valve timing Exhaust closes
0 degrees ATDC at 1mm lift
Valve clearance (cold)
0.003-0.005 in
Engine Weight
72.8 lbs
Idle Speed
1,500 (+ _ ) 100rpm
Carburation
ID Number ('86-'87)
VE14A (VE15A for CA Types)
ID Number (after '91)
VE43A
Main Jet Number
#110
Slow Jet Number
#38
Float Level
.73 in
Drive Train
Clutch Type
Dry, auto-centrifugal clutch
Primary reduction
V-matic
Gear Ratio
2.1-0.88
Final Reduction
6.607
Electrical
Ignition System
Condenser Capacitive Discharge Ignition (CDI)
Starting System
Starter Motor
Alternator
AC generator 12V 240 W/5,000 rpm
Sparkplug (standard)
(NIPPONDENSO) X20EPR-U9
(NGK) DPR6EA-9
Sparkplug (cold climate) (below 41 degrees F)
(NIPPONDENSO) X16EPR-U9
(NGK) DPR5EA-9
Sparkplug ( extended high speed)
(NIPPONDENSO) X22EPR-U9
(NGK) DPR7EA-9
Spark plug gap
.032-.035 in
Ignition timing ( "F" mark)
12 degrees BTDC at idle
Battery Capacity
12V - 10 AH
Fuse - Main
20 A
Fuse Block #2
Fuse - Cooling Fan Motor
5 A
Fuse Block #4
Fuse - Headlight, Taillight, marker
10 A
Fuse Block #5
Clock, Accessories
5 A
Fuse Block #3
Horn,Turn,Brke,Instrument
10 A
Fuse Block #1
Fuel Pump, Starter, Charge
5 A
Lights
Instrument Light
12V  3.4W (x2)  12V 1.7 W (x2)
Side Stand Indicator ( After 91 )
12V 3.4 W
Tail Brake Light
12V 8/27 W
Headlight  High/Low
12V  60/55 W
Rear Turn Signal Lamps
12V 23 W (x2)
Front Marker and Turn Signal Light
12V 8/23 W  (x2)
Turn Signal Indicators
12V 3.4 W (x2)
High Beam Indicator
12V 3.4 W
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