PIAGGIO NRG Power DT User Manual

Engine
ENGINE
Specification Desc./Quantity
Engine type Two-stroke, single cylinder Piaggio Hi-PER2
Bore x stroke 40 X 39.3 mm
Cubic capacity 49.40 cc
Compression ratio 9.4 to 10.4 :1
Carburettor DELL'ORTO PHVA 17.5
CO adjustment 3.5% ± 0.5
Engine idle speed 1800 to 2000 r.p.m.
Air filter Sponge impregnated with fuel mixture (50% SE-
LENIA air filter oil and 50% unleaded petrol).
Starting system electric starter/kickstarter
Lubrication With blend and variable oil variable according to
the engine revolutions and the throttle valve open-
ing by means of a pump controlled by the driving
shaft with toothed belt.
Fuel supply: With the fuel pump in depression, lead-free gaso-
line (with 95 octane minimum) by means of the
carburettor
Cooling system forced coolant circulation system
Characteristics NRG Power DT
CHAR - 4

PIAGGIO NRG Power DT Specifications

General

Engine Type	Single cylinder, 2-stroke
Fuel System	Carburetor
Ignition	Electronic
Front Suspension	Telescopic fork
Rear Suspension	Single shock absorber
Front Brake	Disc
Rear Brake	Drum
Dry Weight	92 kg
Top Speed	45 km/h
Transmission	Automatic
Front Tire	120/70-13
Rear Tire	130/60-13

Summary

Workshop Rules and Safety Guidelines

Safety Rules for Vehicle Maintenance

General safety rules for maintenance operations performed on the vehicle.

Maintenance Procedure Rules

Guidelines for using specific parts, tools, and procedures for maintenance.

Engine Overview and Specifications

Engine Technical Specifications

Lists engine type, bore, stroke, capacity, compression ratio, carburettor, and cooling system details.

Vehicle Systems Overview

Transmission and Fluid Capacities

Frame, Suspensions, and Brakes

Covers chassis structure, suspension system details, and front/rear brake systems.

Carburettor Details and Torque Specifications

Component Tightening Torques

Lists torque values for various assembly points in Nm for proper tightening.

Crankcase, Crankshaft, and Connecting Rod

Axial Clearances for Crankcase Components

Special Tools and Equipment

Maintenance Schedule

Maintenance Tasks by Interval

Details maintenance tasks categorized by mileage intervals and time periods.

Ignition System Checks and Adjustments

Spark Advance and Plug Checks

Explains checking and setting spark advance and maintaining the spark plug.

Ignition Timing and Cable Adjustments

Details procedures for adjusting mixer timing and control cables.

Braking System Checks and Maintenance

Brake Fluid Level and Top-up Procedures

Front Brake Bleeding Procedure

Details filling the system, bleeding screws, and using a MITYVAC pump to remove air.

Troubleshooting Guide

Engine and Performance Issues

Addresses problems like poor performance, starting difficulties, and engine cut-offs.

Electrical, Braking, and Chassis Issues

Covers battery problems, braking malfunctions, and chassis/handling issues.

Electrical System Diagrams

Ignition, Charging, and Starting Circuits

Lighting, Signaling, and Instrument Circuits

Electrical System Checks and Maintenance

Spark Plug, Pick-up, Coil, and Stator Checks

Explains checks for spark plug, pick-up, recharge coil, and stator resistance.

Regulator, Battery, Fuse, and Switch Checks

Covers checks for voltage regulator, battery, fuses, and switches.

Engine Removal and Installation

Engine Removal Steps from Vehicle

Lists the steps required to detach the engine from the vehicle, including disconnecting components.

Engine Internal Transmission Service

Transmission Cover and Kickstart Mechanism

Driven Pulley Shaft Bearing and Clutch Service

Engine Internal Assemblies

Crankcase and Crankshaft Structure

Crankcase Splitting and Crankshaft Service

Crankcase Halves Splitting Procedure

Details splitting the crankcase halves using a special strip and fasteners.

Crankshaft Removal and Refitting

Explains removing and refitting the crankshaft using specific tools.

Crankshaft Alignment and Refitting

Crankshaft Alignment Inspection

Describes checking crankshaft alignment and eccentricity using a dial gauge.

Crankshaft Refitting Procedure

Details refitting the crankshaft into the transmission side half crankcase after heating.

Fuel Supply System Service

Fuel Pump Refitting and Functionality Check

Front Suspension and Handlebar Service

Front Wheel Removal and Refitting

Front Fork and Steering Column Service

Front Fork Removal and Component Service

Steering Column Removal and Bearing Service

Rear Wheel and Shock Absorber Service

Braking System Service

Front Brake Caliper, Disc, and Pump Service

Details front brake caliper, disc, and pump removal, overhaul, and inspection.

Brake Pad, Shoe, and Fluid System Maintenance

Explains front pad, rear shoe service, and brake fluid bleeding procedures.

Pre-Delivery Inspection and Checks

Aesthetic, Torque, Electrical, and Fluid Checks

Road and Static Test Procedures

Describes operational tests performed before vehicle delivery.