Grasshopper 720 - User Manual

THE GRASSHOPPER COMPANY
Moundridge, Kansas 67107 U.S.A.
PHONE (620) 345-8621
FAX (620) 345-2301
PRICE $12.00
ALL MODELS WITH MODULAR WIRING
SERIAL NUMBERS 310000 THROUGH 469999
Rev. 01-95
Form 172110
Printed in U.S.A.
SERVICE MANUAL
E
LECTRICAL TROUBLESHOOTING
VOLUME 1

Grasshopper 720 Specifications

General

Brand	Grasshopper
Model	720
Category	Lawn Mower
Language	English

Summary

Introduction

Symbols Used on Wiring Diagrams

Switch Functions

Troubleshooting Control Relays

Control Relay - Models 720, 718 D, 721, 721 D, and 725

Troubleshooting control relays for specific models, covering wire configurations and common failure symptoms.

Circuit Board Diode Problems - Models 720, 718 D, 721, 721 D, and 725

Diagnoses symptoms of open and shorted diodes on the circuit board, detailing their impact on engine operation and switch functions.

Fuse Block Diagrams

Testing Safety System for Proper Operation

Battery Charging System

Engine Will Not Crank

Model 612, 614 and 616 - Briggs & Stratton Engines Starting Circuit

Troubleshooting steps for engines not cranking on Briggs & Stratton models 612, 614, and 616.

Model 718 - Briggs & Stratton Twin II and Vanguard Engines Starting Circuit

Troubleshooting steps for engines not cranking on Briggs & Stratton models 718.

Model 718 K - Kohler Magnum Engines Starting Circuit

Troubleshooting steps for engines not cranking on Kohler Magnum model 718K.

Model 718 K and 720 K - Kohler Command Engines Starting Circuit

Troubleshooting steps for engines not cranking on Kohler Command models 718K and 720K.

Model 720 - Onan Engine Starting Circuit

Troubleshooting steps for engines not cranking on Onan model 720.

Model 718 D, 721, 721 D, and 725 - Kubota Engines Starting Circuit

Troubleshooting steps for engines not cranking on Kubota models 718D, 721, 721D, and 725.

Engine Will Crank, But Not Start

Model 612, 614, 616, 718, 718 K, and 720 K - All Engines

Troubleshooting engines that crank but do not start on various models.

Model 720 - Onan Engine

Troubleshooting engines that crank but do not start on Onan model 720.

Model 721 and 725 - Kubota Gasoline Engines

Troubleshooting engines that crank but do not start on Kubota gasoline models 721 and 725.

Model 718 D and 721 D - Kubota Diesel Engines

Troubleshooting engines that crank but do not start on Kubota diesel models 718D and 721D.

Engine Starts, But Dies When Levers Are Brought In or PTO Switch Is Engaged

Models 612, 614, 616 and 718

Troubleshooting engine dying when steering levers are moved or PTO is engaged for these models.

Models 718 K and 720 K

Troubleshooting engine dying when steering levers are moved or PTO is engaged for these models.

Model 720 - Onan engine

Troubleshooting engine dying when steering levers are moved or PTO is engaged for Onan model 720.

Model 718 D, 721, 721 D and 725 - All Kubota engines

Troubleshooting engine dying when steering levers are moved or PTO is engaged for Kubota models.

Engine Starts, But Dies When Key Switch Is Released

Model 718 D and 721 D - Kubota diesel engines

Troubleshooting engine dying when the key switch is released for Kubota diesel models.

Troubleshooting PTO Clutch

Model 612, 614, 616, 718, 718 K and 720 K

Troubleshooting steps for PTO clutch issues on specific models.

Model 718 D, 720, 721, 721 D, and 725

Troubleshooting steps for PTO clutch issues on specific models.

1994 Supplement

Model 612 and 616 - Starting Circuit

Wiring and troubleshooting for the starting circuit on 1994 models 612 and 616.

Model 718 - Starting Circuit

Wiring and troubleshooting for the starting circuit on 1994 model 718.

Model 718 K and 720 K - Starting Circuit

Wiring and troubleshooting for the starting circuit on 1994 models 718K and 720K.

Model 721, 721 D and 725 - Starting Circuit

Wiring and troubleshooting for the starting circuit on 1994 models 721, 721D, and 725.

Model 612, 616, 718 K and 720 K - Clutch Circuit

Wiring and troubleshooting for the clutch circuit on 1994 models 612, 616, 718K, and 720K.

Model 721, 721 D and 725 - Clutch Circuit

Wiring and troubleshooting for the clutch circuit on 1994 models 721, 721D, and 725.