COURSER Jacobsen LF4677 / LF577 22-Inch × 7-Inch 11-Blade Cutting Unit Rebuild Kit – Complete 7-Head Set
COURSER Jacobsen LF4677 / LF577 22-Inch × 7-Inch 11-Blade Rebuild Kit – Complete 7-Head Set
Fits compatible Jacobsen LF4677 and LF577 seven-gang cutting units using reel references 5002762 or 2810472. Includes 7 × AM5002762 reels, 7 × AM503460 13-hole bedknives, 14 × AM5002477 bearing-with-cup assemblies, 14 × AM3006030 seals, 7 × R3004734 compression springs and 91 × AM101272 bedknife screws.

A BIG SAVINGS compared with purchasing the included components separately.
This complete COURSER rebuild kit contains the main cutting and service components required to overhaul all seven cutting heads on compatible Jacobsen LF4677 and LF577 fairway mowers fitted with 22-inch × 7-inch, 11-blade cutting units using reel references 5002762 or 2810472.
The kit supplies seven cutting reels, seven heavy-section bedknives, bearing assemblies, reel seals, compression springs and replacement bedknife screws for the complete seven-head machine.
Kit includes
- 7 × AM5002762 — COURSER 22-inch × 7-inch, 11-blade cutting reels
- 7 × AM503460 — COURSER 22-inch, 13-hole heavy-section bedknives
- 14 × AM5002477 — bearing-with-cup assemblies, 2 per cutting head
- 14 × AM3006030 — reel seals, 2 per cutting head
- 7 × R3004734 — reel compression springs, 1 per cutting head
- 91 × AM101272 — Jacobsen 1/4 × 1/2 bedknife screws, 13 per cutting head
This is a complete seven-head rebuild set, providing one reel, one bedknife, two bearing assemblies, two reel seals, one compression spring and thirteen replacement bedknife screws for each cutting unit.
The 11-blade reel and heavy-section bedknife combination provides a durable and practical cutting setup for routine fairway maintenance. Replacing the main cutting and reel-service components together helps restore smooth reel operation, correct reel-to-bedknife contact and consistent cutting performance across all seven heads.
Fits Jacobsen models including
When fitted with compatible seven-gang, 22-inch × 7-inch cutting units using reel references 5002762 or 2810472:
- Jacobsen LF4677
- Jacobsen LF577
Compatibility is determined by the cutting-unit configuration and existing component arrangement, rather than the traction-unit model alone.
Important compatibility information
Before ordering, confirm:
- The machine uses seven compatible cutting heads
- The cutting units are 22-inch × 7-inch
- The existing reel matches reference 5002762 or 2810472
- The cutting units use an 11-blade reel configuration
- The AM503460 bedknife matches the existing 13-hole mounting pattern
- The existing bearing, seal and compression-spring arrangement matches the parts supplied
This kit does not suit 5-inch cutting units or machines fitted with only five cutting heads.
This kit rebuilds a complete set of seven cutting heads.
COURSER Premium guaranteed products are replacement parts designed to fit and replace corresponding OEM parts. OEM names, trademarks and part numbers are used for identification and compatibility reference only.


