Key maintenance tasks to keep your 2017 Harley-Davidson FLHTKSE CVO Limited running reliably.
Requires separate fluids for the engine (approx 4.5-5 qts), primary (1.1 qts), and transmission (1 qt). Synthetic 20W-50 is standard.
The M8 engine uses two spark plugs per cylinder (4 total). Replacement interval is 30,000 miles.
Parts that wear over time on the 2017 Harley-Davidson FLHTKSE CVO Limited and should be inspected regularly.
Known for premature failure on heavy touring models; often checked or replaced every 20,000 miles or at tire changes.
The 950lb wet weight accelerates wear on the rear Dunlop Multi-Tread tire, typically lasting 8,000–12,000 miles.
The most popular aftermarket upgrades for the 2017 Harley-Davidson FLHTKSE CVO Limited.
Reduces crankcase pressure, which is a contributing factor to the 'sumping' issue on early M8 engines.
Solves 'fluid migration' where oil moves from the transmission to the primary through the pushrod tunnel.
Parts that commonly need replacing on the 2017 Harley-Davidson FLHTKSE CVO Limited.
A major recall (18V734) affected 2017 models where the actuator could leak, preventing clutch disengagement.
Early M8 oil pumps (2017-2019) are frequently replaced with the 2020+ updated version to prevent sumping.
What to look for when buying a used 2017 Harley-Davidson FLHTKSE CVO Limited.
Check for low trans fluid combined with a high primary fluid level, indicating the migration issue.
Verify the 17V333 recall was performed; improperly installed clamps could cause sudden oil loss onto the rear tire.
Test ride for significant power loss or excessive heat after 30+ minutes of highway riding, which indicates oil pooling in the crankcase.
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