1999 Yamaha PZ500/DX/ML Phazer & VT500XL Venture Snowmobile Service Manual Set

This Yamaha service manual set covers the PZ500 Phazer and VT500XL Venture XL, with separate supplements for the PZ500ML Phazer Mountain Lite and PZ500DX Phazer Deluxe. The supplements document model-specific changes and are used alongside the base manual for maintenance, tuning, troubleshooting, and repair.

Text search, bookmarks, and wiring detail: Text search is available in the Phazer Deluxe supplement; the base manual and Mountain Lite supplement have no searchable text layer. Embedded bookmarks organize all three sections. Small wiring labels require zooming, and some shaded circuit diagrams in the base manual have grainy backgrounds; the separate full wiring diagrams are clearer.

• Engine repair: Engine removal, cylinder and piston inspection, reed-valve service, crankcase separation, crankshaft checks, cooling-fan repair, and recoil-starter service.

• Carburetion and lubrication: Mikuni B38-32 carburetor disassembly, synchronization, float-height adjustment, fuel-pump testing, Yamaha Autolube bleeding, and engine idle-speed adjustment.

• Clutch and chaincase: Primary and secondary sheave overhaul, drive-belt positioning, sheave alignment, jackshaft inspection, and drive-chain housing service with and without reverse.

• Brakes and suspension: Hydraulic brake bleeding, caliper and master-cylinder repair, track tension and alignment, slide rail suspension service, and ski-spindle camber adjustment.

• Electrical diagnosis: Starting, charging, ignition, lighting, and grip-warmer troubleshooting, Throttle Override System (T.O.R.S.) checks, wiring diagrams, and electrical test specifications.

• Tuning and service data: High-altitude jetting charts, clutch spring and weight selection, gear-ratio tables, tightening sequences, fluid capacities, and component wear limits.

The overhaul and diagnostic sections are suited to mechanics familiar with two-stroke engines and snowmobile drivetrains, with access to the specified clutch tools and electrical test equipment.

Engine Repair and Carburetor Tuning

The engine chapters cover the fan-cooled two-cylinder engine through piston-ring inspection, crankshaft runout measurement, bearing assessment, and crankcase reassembly. Cylinder-head and crankcase tightening sequences accompany the exploded assembly views.

Cylinder variants: The base specifications describe dispersion-coated aluminum cylinders; the Mountain Lite and Deluxe supplements specify cast-iron sleeves. The Deluxe tables also list oversize piston options. These distinctions help match the inspection data and replacement parts to the engine being repaired.

Carburetor coverage includes the Y.E.I.S. chamber, throttle and starter-cable adjustments, and diaphragm fuel-pump testing. The Main Jet Selection Chart and High Altitude Settings tables relate tuning to operating conditions. The manual warns that running without the intake silencer can create a lean mixture and cause severe engine damage.

Clutch, Chaincase, and Chassis Service

Gear-selection tables distinguish model and regional setups, including U.S./Canadian and European Venture clutch configurations. Sheave offset and secondary-sheave clearance specifications support alignment work, while separate chaincase procedures cover reverse-equipped and non-reverse machines.

The primary-clutch procedures identify the spider's left-hand thread and warn that improper support during loosening can crack the sheaves or spider. Listed equipment includes clutch spider separator YS-28890-B and adapter YS-34480; the Deluxe supplement specifies primary-sheave pullers YS-01881-1 and YS-38517.

Brake coverage extends beyond pad replacement to caliper inspection and master-cylinder service. Suspension sections document pivot arms, bushings, shock absorbers, track-drive sprocket positioning, and front-suspension alignment. The Mountain Lite supplement adds its narrower ski stance, different track-adjustment data, and Easy Adjust full-rate mechanism.

Electrical Troubleshooting and Wiring

Electrical Starting System, Ignition System, and Grip Warmer System circuit diagrams accompany fault-isolation charts. Starter-motor repair includes armature, commutator, brush, and brush-spring checks; CDI magneto specifications cover the source, pickup, lighting, and warmer coils.

T.O.R.S. switch-state information helps distinguish an ignition fault from a throttle or carburetor-switch problem. Venture passenger-grip-warmer tests, connector views, wire-color legends, and Cable Routing drawings provide additional detail for tracing model-specific circuits.

Snowmobile service involves tensioned springs, hydraulic brakes, rotating tracks, and combustible fluids. Check the applicable specifications and follow the manual's safety precautions before beginning mechanical or electrical work.

Combined PDF and Included Supplements

Supplied as one printable, English-language 354-page PDF: 205 pages of base-manual content, a 67-page Mountain Lite supplement, and an 82-page Phazer Deluxe supplement. Contents pages, wiring diagrams, and four blank separator pages are already included in those totals.