Target Audience:
Technicians, salvage yards, and DIY owners sourcing correct OEM part numbers for the YX600 Radian
Purpose:
Exact exploded-view part identification and factory part-number lookup
Advantage:
Factory-issued part numbers and exploded diagrams eliminate guesswork when ordering components
Instant Access:
Digital PDF delivery means no waiting for a printed book
Diagrams:
Illustrated exploded views for every major assembly
Part Numbers:
Official Yamaha factory part numbers with quantities per assembly
Searchability:
Text-searchable PDF for fast part-number lookup
Engine Assembly:
Cylinder head, camshafts, valves, pistons, crankshaft, oil pump
Fuel System:
Carburetors, throttle cable, fuel tank, fuel petcock
Exhaust:
Exhaust pipes, muffler, mounting hardware
Cooling:
N/A - not specified for this model (air/oil-cooled engine)
Clutch and Transmission:
Clutch assembly, gearbox, shift cam and forks
Wheels and Brakes:
Wheels, spokes, tires, front disc brake, rear drum brake
Front Suspension:
Fork tubes, springs, damping rods, triple clamps
Rear Suspension:
Swingarm, shocks, chain drive components
Steering:
Handlebar, steering stem, bearings
Electrical:
Wiring harness, battery, ignition, switches, instruments, lighting
Frame and Body:
Frame, seat, side covers, fenders, decals
Content Type:
Exploded-view diagrams with callouts; not a service/repair procedure manual
Torque Data:
N/A - not specified for this model (parts catalog lists hardware, not torque specs)
Assembly References:
Each diagram lists part number, description, and quantity required
Detail Level:
Down to individual bolts, washers, O-rings, and clips
Supersession Notes:
Factory part numbers reflect superseded/replacement numbers
Part Number Format:
Yamaha factory numbering system
Quantities:
Quantity required per assembly listed for every part
File Format:
PDF (searchable, bookmarked, zoomable)
Compatibility:
Windows, macOS, Linux, iOS, and Android — any device with a PDF reader
Requirements:
A PDF reader application (e.g. Adobe Acrobat Reader, free)
Searchability:
Fully text searchable for fast lookup of any topic
Print Quality:
High-resolution digital pages, printable at full clarity
Binding Type:
N/A — digital download, no physical binding
Paper Type:
N/A — digital download, no physical paper
Engine Type:
599 cc inline-four, air/oil-cooled, DOHC, 4 valves per cylinder
Bore x Stroke:
58.5 mm x 55.7 mm
Compression Ratio:
Approximately 9.7:1
Primary Engine:
Single engine option for this model
Claimed Power:
Approximately 61 hp at 9,500 rpm
Claimed Torque:
Approximately 35 lb-ft
Carburetion:
4 x Mikuni BS28 constant-velocity carburetors
Fuel Tank Capacity:
Approximately 3.6 gallons
Fuel Type:
Regular unleaded gasoline
Wheelbase:
Approximately 55.9 in (1,420 mm)
Overall Length:
Approximately 81.1 in (2,060 mm)
Seat Height:
Approximately 29.5 in (750 mm)
Curb Weight:
Approximately 432 lb (196 kg)
Oil Change:
Approximately every 2,000-3,000 miles with YAMALUBE 10W-40 SE-grade oil (era-appropriate)
Valve Clearance:
Check periodically per factory service manual
Chain Service:
Lubricate and adjust regularly; drive chain is a common wear item
Engine Oil:
SAE 10W-40 API SE or better (per 1988 factory spec)
Fork Oil:
Yamaha fork oil, approximately 10 wt grade
Known Issues / Common Wear
Common Wear Items:
Carburetor diaphragms and jets, drive chain, brake pads, fork seals
Carburetion Note:
CV carburetors benefit from periodic syncing and cleaning after storage
