XL HYDROSTATIC TRANSAXLES
3 - 2 XL Lawn Tractor Service Manual
Internal Service
The Hydro-Gear 310-0500/0700 Service Manual is
available from Toro under Form #492-4712.
The Hydro-Gear 310-0510 Service Manual is available
from Toro under Form #492-4735.
Refer to the Tractor Parts Catalog for available
transaxle service parts.
For 1993 - 1995 model year tractors, refer to the
comparable 1996 model, as spare parts were not
shown in earlier parts catalogs.
Troubleshooting Chart
*Make sure brake isn’t stuck in “on” position. Remove brake parts as necessary to test.
**If installing new transaxle, be sure bolt securing linkage in neutral position is removed and discarded.
Symptom Possible Cause Corrective Action
Operates in one direction only Inspect control linkage **Repair or replace
Inspect drive belt and pulleys Repair or replace
Noisy
Check oil level and condition Fill to proper level or change oil
Check for excessive loading Reduce vehicle loading
Check brake setting *Adjust brake or proper setting
Check for loose parts Repair or replace loose parts
Check bypass valve linkage operation Repair or replace linkage
Check frame mount Tighten to frame
Low Power
Check engine RPM Adjust to correct setting
Check drive belt and pulleys Repair or replace
Check oil level and condition Fill to proper level or change oil
Check for excessive loading Reduce vehicle load
Check brake setting *Adjust brake to proper setting
Check for loose parts Repair or replace loose parts
Check bypass valve linkage operation Repair or replace linkage
Check for loose or improper linkage Tighten linkage or replace
Operating Hot
Check for debris build up Clean off debris
Check oil level and condition Fill to proper level or change oil
Check for excessive loading Reduce vehicle loading
Check brake setting *Adjust brake to proper setting
Check fan condition Replace if needed
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