Toro VACU-POWER User manual

VACU-POWER WPM SERVICE MANUAL
Table of Contents – Page 1 of 3
SAFETY INSTRUCTIONS
SAFETY TIPS...
PRODUCT IDENTIFICATION
SPECIFICATIONS
GENERAL SPECIFICATIONS
ZONE START MODEL SPECIFICATIONS
BBC MODEL SPECIFICATIONS
SELF-PROPELLED MODEL SPECIFICATIONS
SERVICE SPECIFICATIONS
VACU-POWER TORQUE SPECIFICATIONS
TROUBLESHOOTING
QUALITY OF CUT
TRANSMISSION
BBC
KEY-LECTRIC STARTING SYSTEM
MISCELLANEOUS
MAINTENANCE
TECUMSEH 2-CYCLE ENGINE - SERVICING THE AIR CLEANER
TECUMSEH 2-CYCLE - REPLACING SPARK PLUG
TECUMSEH 2-CYCLE - ADJUSTING THE THROTTLE
TECUMSEH 2-CYCLE - DRAINING GASOLINE
TECUMSEH 2-CYCLE - SERVICING THE AIR CLEANER
BRIGGS AND STRATTON QUANTUM ENGINE - SERVICING THE AIR
BRIGGS & STRATTON QUANTUM- REPLACING SPARK PLUG
BRIGGS & STRATTON QUANTUM- DRAINING GASOLINE
BRIGGS & STRATTON QUANTUM. CHANGING THE CRANKCASE OIL
BRIGGS & STRATTON QUANTUM- ADJUSTING THE THROTTLE
TORO 2-CYCLE ENGINE - SERVICING THE AIR CLEANER
TORO 2-CYCLE - REPLACING THE SPARK PLUG
TORO 2-CYCLE - DRAINING GASOLINE
TORO OHV ENGINE - SERVICING THE AIR CLEANER
TORO OHV - REPLACING THE SPARK PLUG
TORO OHV - DRAINING GASOLINE
TORO OHV - CHANGING THE CRANKCASE OIL
TORO OHV - ADJUSTING THE THROTTLE
BLADE - INSPECTING/REMOVING/SHARPENING THE BLADE
HOUSING - CLEANING THE MOWER HOUSING
BATTERY - CHARGING, MODEL 26624
WHEELS
ZONE START BRAKE - ADJUSTING BLADE BRAKE

VACU-POWER WPM SERVICE MANUAL
Table of Contents – Page 2 of 3
MAINTENANCE - Continued
BBC - ADJUSTING THE BLADE BRAKE
BBC - CHECK CONTROL BAR OPERATION
SELF-PROPEL SYSTEM - LUBRICATION
SELF-PROPEL SYSTEM - ADJUSTING WHEEL DRIVE
SELF-PROPEL SYSTEM - NEUTRAL ADJUSTMENT
STORAGE - PREPARATION
SECTION 1 FRONT SUSPENSION
FRONT SUSPENSION - OPERATION
FRONT SUSPENSION - DISASSEMBLY
FRONT SUSPENSION - ASSEMBLY
SECTION 2 REAR SUSPENSION (HP MODELS ONLY)
HAND PUSH REAR SUSPENSION - OPERATION
HAND PUSH REAR SUSPENSION - DISASSEMBLY
HAND PUSH REAR SUSPENSION - ASSEMBLY
SECTION 3 SELF-PROPEL SYSTEM
GEAR SELECTION CONTROL - OPERATION
GEAR SELECTION CONTROL - REMOVAL
GEAR SELECTION CONTROL - INSTALLATION
GEAR SELECTION CONTROL - ADJUSTMENT
TRACTION CONTROL - OPERATION
TRACTION CONTROL CABLE - REMOVAL
TRACTION CONTROL CABLE - INSTALLATION
TRACTION CONTROL CABLE - ADJUSTMENT
REAR HEIGHT-OF-CUT SYSTEM (HOC) AND WHEEL PINION CLUTCH (WPC)-
REAR HOC AND WPC - DISASSEMBLY
REAR HOC AND WPC - ASSEMBLY
TRANSMISSION - OPERATION
TRANSMISSION - REMOVAL
TRANSMISSION - DISASSEMBLY
TRANSMISSION - ASSEMBLY
TRANSMISSION - INSTALLATION
SECTION 4 BLADE BRAKE AND CLUTCH (BBC) SYSTEM
INTRODUCTION
BBC CONTROL BOX - OPERATION
BBC CONTROL BOX- DISASSEMBLY
BBC CONTROL BOX - ASSEMBLY
BBC BELLCRANK SYSTEM
BBC UNDER DECK COMPONENTS
BBC CABLE

VACU-POWER WPM SERVICE MANUAL
Table of Contents – Page 3 of 3
SECTION 5 ZONE START BRAKES
INTRODUCTION
PLUNGER STYLE ZONE START BRAKE
PIVOTING ZONE START BRAKE SYSTEM
SECTION 6 ELECTRICAL SYSTEMS
IGNITION CIRCUIT
KEY-LECTRIC STARTING SYSTEM
SECTION 7 HANDLE ASSEMBLY
HANDLE ASSEMBLY - REMOVAL
SECTION 8 CUTTING DECK
CUTTING DECK - OPERATION
SECTION 9 GRASS BAG AND DISCHARGE DOOR
GRASS BAG
DISCHARGE DOOR
SECTION 10 SIDE DISCHARGE CHUTE (OPTIONAL)
SIDE DISCHARGE CHUTE - OPERATION
SECTION 11 -DETHATCHER (OPTIONAL)
DETHATCHER - SAFETY INFORMATION
SECTION 12 ENGINES

ABOUT THIS MANUAL
This service manual was written expressly for Toro Vacu-Power@ Mowers. The
Toro Company has made every effortto maketheinformation
in this manual
complete and correct.
This manualwas written with the service technician
in mind. It is- organized so
that information used most oftenisupfront. As a result,youwillfindreference
informationonsafety, identification, specifications, troubleshooting and
maintenance, all
in the frontthirdof the manual.
Disassembly, inspection and reassembly procedures are covered
in the last
two-thirdsof the manual and are grouped by component.We triedtocover each
common repair withitsown section
or sub-section. For example, youwillfind
that BBC control box service andBBC bellcrank system service are addressed
separately.
Most sections will include some component theory. This informationcanbe
foundat thefront of each service procedure section.
We are hopeful that you will find this manual a valuable additiontoyour shop. If
you have any questions
or comments regarding this manual, please contactus
at thefollowing address:
The Toro Company
Consumer Service Department
81 11 Lyndale Avenue South
Minneapolis, MN
55420
The Toro Company reserves the rightto change product specifications or this
manual without notice.
@COPYRIGHT ALL RIGHTS RESERVED
The Toro Company 1990

SAFETY INSTRUCTIONS
Servicing of any outdoor power
equipmentrequirescare and
commonsensetopreventinjury.
Safetyalert 'CAUTION' statementshave
beenplacedthroughout thismanualtoenhance
safety. Whenever youencountertheword
CAUTION read the instructionbecause
it has
to do
with safety. Failure to comply withthe
instruction
may result In personalInjury or
death.
This manual is intended
as a serviceandrepair manual
forToroservicing dealers. The safety instructions prov-
ided
in this manual are for the troubleshooting and
service ofthe productonly. The individual Operator's
Manualswillcontainsafetyandinstructional
informationonthe operationof Vacu-Power mowers.
Operator's Manuals are available through:
The Toro Company
Publications Department
81 11 Lyndale Avenue South
Minneapolis,
MN 55420 U.S.A.
SAFETY TIPS
Avoid lacerationsand amputations
Stay clear ofall moving parts whenever the engineis
running.Treat
all normally moving parts as if they were
movingwhenever the engine is
running or has the
potentialto start.
Avoid burns
Donot touch enginewhilerunning or shortlyafter
running.
Avoidfalls
Do not operatethe mower on slippery surfaces or
if
footingisquestionable.
Avoidfires andfalls...
Wipe
up any spilled fuel or oil.
Avoid asphyxiation
Never operate an engine
in a confined area without
proper ventilation.
Avoid possibleeye injuries
Weareye protectionwhenworkingwithsprings
or
cables and when runningengine
Avoid unexpectedstartingof engine
Always turn
off key and disconnect spark plug wire
before attempting any cleaning, adjustment or repair.
Avoid possible firesand explosions
Use a container designed for gasoline. Avoid spilling
gasoline and neversmokewhile working around
gasoline.
Avoid accidentalmisuseof fuel...
Always storefuel
in a container designed for gasoline
that isproperly labeled.
Avoid possible injurydueto inferlorparts
Use only Toro original partsto insure that important
safety criteria aremet.
Avoid injury tobystanders
Always clear the area of bystanders before starting or
testing a lawnmower.
Avoid Injurydueto
projectiles
Always clearthe areatobe mowed of sticks, rocks and
other debris that couldbepickedupand thrown by the
mower.
Vacu-PowerMowerSafety Instructions

TABLE OF CONTENTS
Reference Information
Safety Instructions Page 1
Table ofContents 2
Identification
6
Specifications 7
Troubleshooting
IO
Maintenance 17
Service Procedures
SectionOne Front Suspension
OperationPage30
Disassembly .30
Assembly
30
Section Two Rear Suspension (HP Models Only)
Operation32
Disassembly
32
Assembly 32
SectionThree
Self-PropelSystem
Gear Selection Control
Operation
Removal
Installation
34
Adjustment35
Drive Control
Operation
36
Removal 36
Installation 37
Adjustment37
Rear Height-of-Cut and Wheel Pinion Clutch
Operation 38
Disassembly 39
Assembly
40
Table of Contents 2 Vacu-Power Mower

TABLE OF CONTENTS (cont’d)
Service Procedures (cont’d)
SectionThree Self-PropelSystem(cont’d)
Transmission
Operation Page 41
Removal
Disassembly
Assembly
Installation
. . . . . . , .. , ,,, ... . . . .. .. , . .. . . . ....... . .. .. .46
SectionFour BladeBrakeandClutch(BBC)System
Introduction
BBC ControlBox
Operation
.................................................. 47
Disassembly
Assembly50
BBC Bellcrank System
Operation51
Disassembly51
Assembly
. ,, . , .. .. .. . ... . , . , , . . ,, ,, . ..... . . . .. . .. , . . ... . . . .52
BBC Under Deck Components
Operation
Disassembly
Assembly55
BBC Cable
Removal
56
installation . . , , .. , . . , .. .. , ..... . . . . , . .. . . . . ..... .. . ... . ... . . .57
Adjustment . , ... , . , . ... . . , , . . . .... . ... .
. .. .. .. .. .. , .. , . .. .57
SectionFive ZoneStartBrakes
Introduction ...................................................... 59
Plunger Style Zone Start Brake System
Operation59
Disassembly ................................................ 60
Assembly 60
Adjustment ................................................. 61
Vacu-Power Mower
3 Table of Contents

TABLE OF CONTENTS (cont’d)
Service Procedures (cont’d)
SectionFiveZoneStartBrakes(cont’d)
Pivoting Zone Start Brake System
Operation Pa
Disassembly .61
Adjustment .62
Assembly
SectionSixElectricalSystem
Ignition Circuit
Operation
..................................................a
Troubleshooting .............................................a
Key-Lectric Starting System
Operation
.........................................,........a
Testing
SectionSeven HandleAssembly
Removal
Installation .67
SectionEightCuttingDeck
Operation .69
Adjustments
Repair
SectionNineGrassBagandDischargeDoor
Grass Bag
Construction
71
Disassembly ................................................71
Assembly
Discharge Door
Operation
Disassembly
Assembly
7 2
Table
of Contents 4 Vacu-PowerMower

TABLE OF CONTENTS (cont'd)
Service Procedures(cont'd)
SectionTen SideDischargeChute(Optional)
Operation .............................................Page74
Disassembly
................................................ 74
Assembly
.................................................. 74
SectionElevenDethatcher(Optional)
Operation
.................................................. 75
SafetyInformation
........................................... 75
Installation
.................................................. 78
Assembly
.................................................. 75
Adjustment
................................................. 79
Maintenance
................................................ 79
Section
Twelve Englnes ......................................................... 80
Vacu-Power Mower
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Table of Contents