SCREAMIN EAGLE MILWAUKEE-EIGHT™ 128/131 STAGE IV KIT
J066832021-03-02
GENERAL INFORMATION
Table 1. General Information
Kits | Suggested Tools | Skill Level(1) |
|---|---|---|
92500077, 92500078, 92500079, 92500080, 92500081, 92500082, 92500094, 92500095 | Safety Glasses, Torque Wrench |  |
(1) Special tools or techniques required for installation
GENERAL
Models
For model fitment information, see the P&A Retail Catalog or the Parts and Accessories section of www.harley-davidson.com (English only).
Verify that the most current version of the instruction sheet is used. It is available at: www.harley-davidson.com/isheets
Contact Harley-Davidson Customer Support Center at 1-800-258-2464 (U.S. only) or 1-414-343-4056.
Installation Requirements
Visit https://serviceinfo.harley-davidson.com for the latest instruction sheet.
WARNINGRider and passenger safety depend upon the correct installation of this kit. Use the appropriate service manual procedures. If the procedure is not within your capabilities or you do not have the correct tools, have a Harley-Davidson dealer perform the installation. Improper installation of this kit could result in death or serious injury. (00333b)
- 2017-2018 Models with 107 Engine: Separate purchase of Screamin Eagle High Capacity Clutch Plate kit (Part No. 37000258) is required.
- 2017-2019 Models: Separate purchase of Oil Pump Assembly kit (Part No. 62400247-Oil Cooled or 62400248-Twin Cooled) is required.
- 2018 and Later FXFB/S Models: Separate purchase of High Flow Exhaust (Part No. 64900828 or 64900829).
- Separate purchase of Screamin Eagle High Flow Air Cleaner kit.
- Separate purchase of the Cam Drive Retention Kit (Part No. 25566-06) is required.
- Separate purchase of Cam Spacer Kit (Part No. 25928-06) is required.
- Kit requires ECM recalibration. Contact a Harley-Davidson dealership.
These items are available at your local Harley-Davidson dealership.
NOTE
This instruction sheet references service manual information. A service manual for your model motorcycle is required for this installation and is available from a Harley-Davidson dealer.
PREPARE
| 1. | Set motorcycle upright. See service manual. | |
| 2. | Disarm security system. See service manual. | |
| 3. | Remove seat. See service manual. | |
| 4. | Remove main fuse. See service manual. | |
| WARNING When servicing the fuel system, do not smoke or allow open flame or sparks in the vicinity. Gasoline is extremely flammable and highly explosive, which could result in death or serious injury. (00330a) | ||
| 5. | Remove fuel tank. See service manual. | |
| 6. | Twin-Cooled: Drain coolant system. |
REMOVE
NOTE
The following steps are provided as an outline process. Follow procedures in service manual.
| 1. | Remove air cleaner assembly. | |
| 2. | Remove exhaust system. | |
| 3. | Remove induction module. | |
| 4. | Disconnect harness connections from cylinder head. | |
| 5. | Remove oil coolant lines and manifolds from engine. | |
| 6. | Remove rocker covers, rocker arms, pushrods, and pushrod tubes. | |
| 7. | Remove cylinder heads, cylinder and pistons. | |
| 8. | Remove lifter covers, anti-rotation devices and lifters. | |
| 9. | Remove cam cover, cam plate and camshaft. | |
| 10. | Remove inner cam bearing. | |
| 11. | Remove clutch unless already equipped with a 10 plate clutch. See service manual. |
INSTALL
NOTE
The following steps are provided as an outline process. Follow procedures in service manual.
| 1. | Install clutch using 10 plate clutch. See instruction sheet J06246 and service manual. NOTE 10-plate assist and slip clutch used in Milwaukee-eight vehicles has sufficient capacity to support this kit for most applications. Only install higher capacity springs if clutch slippage occurs. Higher capacity springs will increase clutch lever effort. | |
| 2. | Install camshaft needle bearing (5). | |
| 3. | See Figure 3. Install oil pump. | |
| 4. | Install camshaft into engine. | |
| 5. | Assemble cam plate and camshaft drive. | |
| 6. | Verify camshaft to crankshaft timing marks are properly aligned. | |
| 7. | Install lifters (provided in kit), anti-rotation device, lifter cover gaskets (provided in kit) and lifter covers. | |
| 8. | Install pistons and cylinders provided in kit. Follow instructions provided with piston and cylinder kit. | |
| 9. | Install cylinder heads using new flange nuts included with kit. Follow instructions provided with cylinder head kit. NOTE This kit uses a special head torque sequence. | |
| 10. | Install pushrod tubes and pushrods using O-rings provided with kit. | |
| 11. | With piston at approximately Bottom Dead Center (BDC) on power stroke, install rocker arms. | |
| 12. | Alternately tighten screws to pull rocker shaft down evenly. | |
| 13. | Install rocker covers. | |
| 14. | Verify that camshaft to crankshaft timing marks are properly aligned. | |
| 15. | Install cam cover and new gasket provided in kit. | |
| 16. | Prepare induction module included with kit for installation. See instructions included with induction module. | |
| 17. | Install high flow fuel injectors. | |
| 18. | Install induction module. | |
| 19. | Install coolant/oil manifold to cylinder heads. a. Thoroughly clean ALL threadlocking material from threads of screws and threaded holes. See service manual. b. Clean all debris from mating surfaces. c. Install O-rings provided in kit | |
| 20. | Air-Cooled Touring models: Install fan assisted oil cooler included in kit. | |
| 21. | Install exhaust system. NOTE
| |
| 22. | Install air cleaner assembly. See instruction sheet included with separately purchased SE high flow air cleaner kit. |
COMPLETE
| 1. | Install fuel tank. See service manual. | |
| 2. | Install main fuse. See service manual. | |
| 3. | Twin-Cooled: Fill coolant system and purge air. See service manual. | |
| 4. | Install seat. After installing seat, pull up on the seat to verify that it is secure. See service manual. | |
NOTICE You must recalibrate the ECM when installing this kit. Failure to properly recalibrate the ECM can result in severe engine damage. (00399b) | ||
| 5. | Calibrate Electronic Control Module (ECM) with proper calibration for configuration. See dealer for details. | |
| 6. | Run motorcycle until engine is at normal operating temperature. Repeat several times to verify proper operation. | |
| 7. | See owner's manual for BREAK-IN RIDING RULES. |
KIT CONTENTS
Figure 1. Kit Contents: Top End: Screamin' Eagle Milwaukee-Eight™ Stage 4 Components
Table 2. Kit Contents: Top End: Screamin' Eagle Milwaukee-Eight™ Stage 4 Components
 | Item | Qty | Description | Part No. | Notes |
|---|---|---|---|---|---|
 | 1 | 1 | Piston kit, 128 | 21900101 | |
| 2 | 1 | Piston kit, 131 | 21900099 | |
| 3 | 4 | O-ring, coolant manifold | 11900090 | |
| 4 | 2 | Exhaust gasket | 65324-83B | |
| 5 | 4 | Flange nut | 10200303 | |
| 6 | 1 | Cylinder head kit, air cooled (HOG black) | 16500750 | |
| 7 | 1 | Cylinder head kit, air cooled (black granite) | 16500749 | |
| 8 | 1 | Cylinder head kit, twin-cooled (HOG black) | 16500748 | |
| 9 | 1 | Cylinder head kit, twin-cooled (black granite) | 16500747 | |
| 10 | 1 | Cylinder kit (HOG black) | 16800210 | |
| 11 | 1 | Cylinder kit (black granite) | 16800212 | |
| 12 | 1 | Cylinder kit (HOG black non-highlighted) | 16800211 | |
Notes:
| |||||
NOTE
Verify all contents are present in the kit before installing or removing items from vehicle.
KIT CONTENTS
Figure 2. Kit Contents: Valve Train: Screamin' Eagle Milwaukee-Eight™ Stage 4 Components
Table 3. Kit Contents: Valve Train: Screamin' Eagle Milwaukee-Eight™ Stage 4 Components
| Item | Qty | Description | Part No. | Notes |
|---|---|---|---|---|---|
| 1 | 4 | O-ring | 11293 | |
| 2 | 4 | O-ring | 11132A | |
| 3 | 4 | O-ring | 11145A | |
| 4 | 2 | Gasket, lifter cover | 25700362 | |
| 5 | 1 | Lifter kit, high capacity | 18572-13 | |
| 6 | 2 | Gasket, lower rocker cover | 25700425 | |
| 7 | 2 | O-ring, breather | 11900116 | |
| 8 | 2 | Gasket, upper rocker cover | 25700372B |
NOTE
Verify all contents are present in the kit before installing or removing items from vehicle.
KIT CONTENTS
Figure 3. Kit Contents: Cam Compartment: Screamin' Eagle Milwaukee-Eight™ Stage 4 Components
Table 4. Kit Contents: Cam Compartment: Screamin' Eagle Milwaukee-Eight™ Stage 4 Components
| Item | Qty | Description | Part No. | Notes |
|---|---|---|---|---|---|
| 1 | 1 | Gasket, cam cover | 25700370 | |
| 2 | 1 | Camshaft drive sprocket retention kit | 25566-06 | Purchase separately |
| 3 | 1 | O-ring, cam plate to oil pump | 11900103 | |
| 4 | 1 | Camshaft, SE8-517 | 25400353 | |
| 5 | 1 | cam bearing | 9298B | |
| 6 | 1 | O-ring, oil pump to crankcase | 11293 | |
| 7 | 1 | Oil pump (Oil cooled) | 62400247 | Purchased separately, if needed |
| 1 | Oil pump (Twin cooled) | 62400248 | Purchased separately, if needed | |
Items included but not shown | |||||
| 1 | Screamin' Eagle 64mm throttle body kit | 27300098 | ||
| 1 | Screamin' Eagle high flow injection kit | 27400040 | ||
| 1 | Exhaust header | 65600177 | Included in kits: 92500077, 92500078, 92500079, 92500080, 92500081, 92500092 | |
| 1 | Fan assisted oil cooler kit | 62700204 | Included in kits: 92500078, 92500079, 92500082 | |
| 1 | Product information label | Not sold separately | ||
NOTE
Verify all contents are present in the kit before installing or removing items from vehicle.