Grasshopper 721D - 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 721D Specifications

General

Brand	Grasshopper
Model	721D
Category	Lawn Mower
Language	English

Summary

TROUBLESHOOTING CONTROL RELAYS

TESTING SAFETY SYSTEM FOR PROPER OPERATION

MODEL612, 614, 616, 718, 718 K, 720 K

MODEL 720(Onan), 718 D, 721 D, 721 and 725

BATTERY CHARGING SYSTEM

MODEL 718 (Briggs & Stratton Twin-II engine)

MODEL 612, 614, 616, and 718 (Briggs & Stratton Vanguard engines) and MODEL 718 K and 720 K (Kohler Magnum & Command engines)

MODEL 718 D, 721, 721 D, and 725 (All Kubota engines)

ENGINE WILL NOT CRANK

MODEL 612, 614 and 616. (Briggs & Stratton engines)

Troubleshooting steps for engines that will not crank.

MODEL 718. (Briggs & Stratton Twin II and Vanguard engines)

Diagnosis for engines failing to crank on Briggs & Stratton models.

MODEL 718 K. (Kohler Magnum engines)

Troubleshooting engine crank failure for Kohler Magnum engines.

MODEL 718 K and 720 K. (Kohler Command engines)

Steps to diagnose crank issues for Kohler Command engines.

MODEL 718 D, 721, 721 D, and 725 (All Kubota engines)

Diagnosing engine crank failures for Kubota models.

ENGINE WILL CRANK, BUT NOT START

MODEL 612, 614, 616, 718, 718 K, and 720 K (All engines)

Troubleshooting when the engine cranks but doesn't start.

MODEL 720 (Onan engine)

Diagnosing why the Onan engine cranks but won't start.

MODEL 721 and 725 (Kubota gasoline engines)

Troubleshooting Kubota gasoline engines that crank but don't start.

ENGINE STARTS, BUT DIES

MODELS 612, 614, 616 and 718

MODELS 718 K and 720 K

MODEL 720 (Onan engine)

MODEL 718 D, 721, 721 D and 725 (All Kubota engines)

ENGINE STARTS, BUT DIES WHEN KEY SWITCH IS RELEASED

MODEL 718 D and 721 D (Kubota diesel engines)

TROUBLESHOOTING PTO CLUTCH

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

MODEL 718 D, 720, 721, 721 D, and 725