Overview
Electric PTO Clutches for Grasshopper
Overview
Product Description
These Stens Electric PTO Clutch is OEM specifications and replaces Grasshopper PTO Clutches. It is designed for rugged use and made for residential and commercial applications. Stens PTO clutches have a One Year Warranty and are maintenance and adjustment free.
You must match up your existing PTO Clutch reference number exactly to the corresponding replacement Electric PTO Clutch. For proper ordering reference Grasshopper & Warner Part No. below.
| Item # | Replaces Grasshopper OEM |
Replaces Warner # |
ID | HT | Pulley Diameter |
Direction | Uses Belt Width |
|---|---|---|---|---|---|---|---|
| 255-319 | 388762 / 604180 | 5218-27 5218-69 |
1" | 3 13/16" | 4 7/8" | Clockwise | 1/2" |
| 255-335 | 388767 / 606242 / 388769 |
5218-26 5218-58 5218-67 5218-68 5218-147 5218-214 5218-257 |
1 1/8" | 3 1/2" | 4 7/8" | Clockwise | 1/2" |
| 255-519 | 388766 / 604182 | 5215-52 5215-62 5215-120 |
1 1/8" | 3 3/4" | 5" | Clockwise | 1/2" |
| 255-865 | 388740 | 5218-165 5218-225 |
1 1/8" | 2 7/8" | 6 5/16" | Clockwise | 5/8" |
Important:
If a clutch is mounted incorrectly then the springs will be run in compression and it will cause the springs to fail.
Generally, most applications that mount directly to the crankshaft use a counter clockwise rotation for standard mount (pulley away from engine). A clockwise rotation is normally used for reverse mounting (pulley towards engine).
In order for your PTO clutch to be installed properly you must torque correctly to prevent premature failure. You must allow both axial and radial free-play on the anti-rotation device. You must allow this free-play or resistance will be created resulting in field bearing failure.
When mounting bolt and retaining washer and torque for the clutch follow these specs. for it to work properly.
- Use Grade 5 or Grade 8 bolt only
Minimum Torque:
- 7/16" UNF bolt is 50ftlb/67 Nm
- 3/8" UNF bolt is 31ftlb/42 Nm
- M10x1.5 bolt is 35ftlb/48 Nm
Anything less than required mounting torque could result in clutch failure, thus voiding warranty.