Toro 30620, 30798, 31-16O803, 31-16O804, 41-20OE02 Service Manual

ONAN TORO POWER PLUS P216, 18, 20, 24 ENGINES - HORIZONTAL

Table of Contents – Page 1 of 2

SAFETY PRECAUTIONS

GENERAL

PROTECT AGAINST MOVING PARTS

BATTERIES

FUEL SYSTEM

EXHAUST SYSTEM

EXHAUST GAS IS DEADLY!

COOLING SYSTEM

KEEP THE UNIT AND SURROUNDING AREA CLEAN

CAUTION

GENERAL INFORMATION

INTRODUCTION

ENGINE MODEL REFERENCE

SPECIFICATIONS

DIMENSIONS AND CLEARANCES

P216, P218, P220

P216,P218,P220

P224

P224

ASSEMBLY TORQUES

SPECIAL TOOLS

ENGINE TROUBLESHOOTING

OIL SYSTEM

CRANKCASE OIL

OIL FILTER CHANGE

CRANKCASE BREATHER

CRANKCASE BREATHER SERVICE

P216, P218, P220

P224

PRESSURE LUBRICATION

OIL PUMP

OIL BYPASS VALVE

FUEL SYSTEM

CARBURETOR

CARBURETOR SPEED SETTINGS

CARBURETOR OVERHAUL

REMOVAL

DISASSEMBLY

CLEANING AND REPAIR

REASSEMBLY AND INSTALLATION

PULSATING-DIAPHRAGM FUEL PUMP

FUEL PUMP TEST PROCEDURE

PURPOSE

CARBURETOR (BEGINNING SPEC G)

CARBURETOR HIGH-ALTITUDE JET (OPTIONAL)

AIR CLEANER

GOVERNOR SENSITIVITY

ONAN TORO POWER PLUS P216, 18, 20, 24 ENGINES - HORIZONTAL

Table of Contents – Page 2 of 2

IGNITION AND BATTERY CHARGING

IGNITION SYSTEM DESCRIPTION

IGNITION TIMING

CONTINUITY TEST

IGNITION COIL

SPARK PLUGS

BATTERY INSPECTION

BATTERY JUMP STARTING

FLYWHEEL ALTERNATOR

ALTERNATOR OUTPUT TEST

TYPICAL WIRING DIAGRAM

STARTING SYSYTEM

ELECTRIC STARTER

SERVICE

STARTER REMOVAL

STARTER DISASSEMBLY

STARTER ASSEMBLY

INSPECTION AND TESTING

STARTER MOUNTING

ENGINE DISASSEMBLY DISASSEMBLY/ASSEMBLY SUGGESTED DISASSEMBLY ORDER SUGGESTED ASSEMBLY PROCEDURE OPERATION

TESTING COMPRESSION TAPPET ADJUSTMENT VALVE SYSTEM INSPECTION

TAPPETS

VALVE FACE AND SEAT GRINDING FLYWHEEL

GEAR COVER GOVERNOR CUP TIMING GEARS

PISTONS AND CONNECTING RODS CYLINDER BLOCK

CLEANING INSPECTION

REBORING THE CYLINDER

HONING CYLINDERS (USING PRECISION HONES) DEGLAZING CYLINDER BORES

CRANKSHAFT BEARINGS CRANKSHAFT ENDPLAY

CHECKING CONNECTING ROD BEARING CLEARANCE WITH PLASTIGAUGE OIL SEALS

PISTON ASSEMBLY

INSTALLATION OF PISTON IN CYLINDER CYLINDER HEADS

P216, P218, P220 INSTALLATION 224 INSTALLATION