EN - 20
SERVICE PARTS
See your Gravely dealer to purchase service
parts for your unit.
CHECK SAFETY INTERLOCK
SYSTEM
See Test Safety Interlock System on page 15.
If system does not operate correctly, see your
dealer for repair. DO NOT operate until
repairs are made.
CHECK HYDRAULIC SYSTEM
Check Hydraulic Oil Level
See Figure 21.
1. Place unit in service position. See
Service Position on page 18.
2. Check oil level in expansion tanks. Oil
should reach the cold fill indicator line.
IMPORTANT: Engine should be cold when
checking initial oil level.
3. Operate engine for 1 minute and recheck
oil levels.
4. Add hydraulic oil, if needed. See Add
Hydraulic Oil on page 20.
Add Hydraulic Oil
1. Place unit in service position. See
Service Position on page 18.
2. Remove hydraulic oil expansion tank
caps.
3. Fill expansion tanks with 15W-50
synthetic motor oil (Gravely
p/n 00057100) or equivalent until oil
reaches the cold fill indicator mark. See
Figure 21.
4. Reinstall expansion tank caps.
Change Hydraulic Oil and Filter
1. Operate unit for a few minutes to warm
hydraulic oil.
2. Place unit in service position. See
Service Position on page 18.
3. Position container under oil filter to catch
used oil.
Description Qty. Part No.
Air Filter 1 21548000
Engine Oil Filter 1 21548100
Fuel Filter 1 21548101
Spark Plug 1 21547800
PTO Belt – 36" 1 07200820
PTO Belt – 48" 1 07200819
PTO Belt – 52" 1 07200808
PTO Belt – 60" 1 07200818
Mower Blade – 36" 2 00450300
Mulching Blade – 36" 2 00273100
Mower Blade – 48" 3 00450200
Mulching Blade – 48" 3 00273000
Mower Blade – 52" 3 00450300
Mulching Blade – 52" 3 04887600
Mower Blade – 60" 3 09081200
Mulching Blade – 60" 3 04887700
Transaxle Drive Belt
(Model 988171)
1
07200610
Transaxle Drive Belt
(Models 988172, 988173,
988174)
1
07241400
Hydraulic Oil Filter 2 21548300
Hydraulic Oil and Filter Kit 1 59222800
Relay A/R 04438400
Fuel Stabilizer – 118 ml
(4 oz)
• Except Canada
• For Canada Only
A/R
04730300
04742400
Figure 21
1. Cold Fill Indicator Line
1