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Piaggio Beverly 350 (BV350) - Master Maintenance & Torque Guide

The Piaggio Beverly 350, sold in the US market as the BV350, uses Piaggio's HPE liquid-cooled single-cylinder engine with a Kevlar double-cogged CVT belt and a high-torque driven pulley nut. This is a maxi-scooter class machine, and its fastener specs across the belt, oil filter, and spark plug are calibrated for sustained highway use rather than short commuter trips — treating it like a smaller Piaggio scooter during service is a common and costly mistake.

⚡ Quick Maintenance Specs & Direct Answers

  • Engine Oil: SAE 15W-50 Synthetic (API SL/SM, JASO MA Wet Clutch)
  • Engine Oil Capacity: 1.5 L (with oil filter replacement)
  • Gear Oil & Volume: SAE 80W-90 GL-4 (250 ml)
  • OEM Oil Filter: # 82635R
  • OEM Air Filter: # 876922
  • Spark Plug & Gap: NGK CR8EKB (0.7 - 0.8 mm)

Engine Fluids, Gear Oil & Filter Specifications

Engine Oil Viscosity & JASO/API StandardSAE 15W-50 Full Synthetic (API SL/SM, JASO MA Wet Clutch)
Engine Oil Drain & Refill Capacity1.5 L (With Filter)
Final Drive / Gearbox Oil Viscosity & VolumeSAE 80W-90 GL-4 (250 ml)
OEM Oil Filter Part Number82635R
OEM Air Filter Element Part Number876922
Spark Plug Model & Electrode GapNGK CR8EKB (Electrode gap: 0.7 - 0.8 mm)
Field note: The BV350 engine incorporates an integrated wet multi-plate clutch within the engine oil bath, requiring JASO MA rated 15W-50 full synthetic oil. Never use low-friction API SN energy-conserving car oils or JASO MB oils, as friction modifiers will cause internal wet clutch slippage. Gearbox oil takes exactly 250 ml of SAE 80W-90 GL-4. For related maxi-scooter fluid service procedures, consult the complete Piaggio MP3 500 master guide.

Engine Internals: Cylinder Head & Crankshaft

Cylinder Head Assembly (HPE Liquid-Cooled SOHC)
Part No.QtyPart NameNotes
8311021Head Comp., CylinderHigh Performance Engine (HPE) design; resurface flatness < 0.05mm
8311151Valve, ExhaustCheck margin thickness > 0.5mm before reuse
8311221Valve, InletLarger head diameter — do not swap positions
8311401Gasket, Head Cyl.Single-use metal composite; never reuse
8311651Camshaft Comp.Chain-driven; inspect lobe wear before reinstall
Crankshaft & Piston Assembly
Part No.QtyPart NameNotes
8312101Crankshaft Comp.Check runout < 0.03mm on V-blocks
8312251Connecting RodBig-end side clearance spec: 0.1-0.4mm
8312501Piston (Std.)Domed piston, 3-ring set
8312651Piston PinLightly oil before install; hand-pressure fit only
8312702Piston Pin Clip (Circlip)Directional installation — see expert note below
Field note: On the HPE engine's high-compression short block, the piston pin circlips must be installed with the opening gap oriented 90° to the direction of piston travel, never fore-or-aft. A backward clip compresses under inertial load on every stroke until it walks out of its groove and ejects into the crankcase, and the freed pin gouges the cylinder wall on the following stroke, destroying the bore. Use only new clips and confirm full seating by feel before closing the case.

OEM Body Panels & Color Matching

Part NameGrigio AchilleNero VulcanoBianco Perla
Front CowlConsult Service ManualConsult Service ManualConsult Service Manual
LH Side PanelConsult Service ManualConsult Service ManualConsult Service Manual
RH Side PanelConsult Service ManualConsult Service ManualConsult Service Manual
WindscreenConsult Service ManualConsult Service ManualConsult Service Manual
Rear Trunk CoverConsult Service ManualConsult Service ManualConsult Service Manual
Field note: The Beverly/BV350's large touring fairing panels have substantial surface area exposed to UV, and the mounting tabs behind that painted surface become brittle after roughly three years of continuous exposure. Never use an impact driver on body screws — a snapped tab on a large fairing panel is a costly sourcing problem — and apply silicone grease (never petroleum-based) to rubber grommets before removal.

Official Technical Reference

The specifications above are cross-checked wherever possible, but this guide does not replace the factory service manual. Before ordering parts or performing a repair, confirm current fitment and revision bulletins directly with Piaggio.

Visit Piaggio Official Site & Parts Resources