# Service bulletins for the 1999 Harley\-Davidson XL 1200

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

2 bulletins from NHTSA, as of 2026-10-19.

- [1HDM5V2A05](/bulletins/10139399.md), 2018-06-04, Service bulletin: POWER TRAIN. TECH ARTICLE TA0023: TA0023: Crankshaft Rod Bearing. Purpose: Technicians have been falsely identifying connecting rod bearings as failed due to a perception of resistance as the rods are rotated. The clearance of the Twin Cam and Milwaukee\-Eight® crank pin bearings are maintained to a very tight range. This optimizes performance and maintains low mechanical noise in operation. The connecting rod bore can also distort slightly in operation due to stress relaxation. As a result, bearing clearance decreases due to the contact zone broadening and the load being distributed over more rollers. The combination of a bore being slightly out of round and reduced bearing clearance can result in varying degrees of resistance through the range of motion. Axial clearance is also tightly controlled for proper alignment. For these reasons, zones of resistance can be found when the connecting rods are rotated by hand through their range of motion. Resistance during rod motion, by itself, is not an indication of a performance or durability concern.
- [1HD\-C6F3G\-12](/bulletins/10090280.md), 2017-02-03, Service bulletin: EQUIPMENT; ENGINE. THIS DOCUMENT WILL OUTLINE INSPECTION AND MEASUREMENT PROCEDURES FOR GEROTOR STYLE OIL PUMPS. IT PROVIDES INSPECTION PROCEDURES ONLY WITHOUT SPECIFICATIONS.

JSON: [/v1/vehicles/1999_harley-davidson_xl-1200/bulletins](/v1/vehicles/1999_harley-davidson_xl-1200/bulletins)

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