Engine Mounts
Have you done anything to it or is still in stock like when new? How many miles are on it? When do you notice the vibration (at idle, accelerating, constant, etc..)? A bit more information might help someone help you. Could be anything from bad gas to just the EITMS is kicking in. Unless you have over 50k miles on it, I seriously doubt the engine mounts are worn.
HDF Community Team
Joined: Mar 2017
Posts: 7,821
Likes: 4,381
From: Texas
- Mileage when you purchased it
- Mileage now
- Riding style
- Maintenance style
- climate/geographical region
- excessive vibration all the time or just idle or just cruising or just accelerating or just decelerating...
- storage during off-season (if applicable)
- age/wear of tires
- modifications
- It's probably not different than it was
- spark plugs dirty
- air filter dirty
- O2 sensor dirty
- rubber mounts - Rubber breaks down constantly, though being out of the sun and in moisture helps prolong rubber's life. Hard riding will also break down the rubber more rapidly.
Page 2-61 of the Service Manual states:
Last edited by BrandonSmith; Mar 13, 2019 at 12:57 PM.
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Cruiser
Joined: Jun 2016
Posts: 154
Likes: 100
From: Wisconsin
Have you done anything to it or is still in stock like when new? How many miles are on it? When do you notice the vibration (at idle, accelerating, constant, etc..)? A bit more information might help someone help you. Could be anything from bad gas to just the EITMS is kicking in. Unless you have over 50k miles on it, I seriously doubt the engine mounts are worn.
Seventy-year-old rider. The bike was broken in per the owner's manual. Never raced, no burnouts. All service up to date and performed by local HD dealer. No unusual tread wear; all wheel weights are present. Never dropped. Never in an accident.
Increased vibrations are felt in the handlebars, footpegs, and seat throughout the rpm range. Very noticeable when riding at 60-85 mph. Not related to the EITMS kicking it at idle.
Last edited by Michael Haz; Mar 13, 2019 at 10:03 PM.
Well sir, I'm thinking it has something to do with one or both of your tires. I had a similar vibration but it would only show up at speeds over 80. I put some dyna beads in the front tire and I don't notice it anymore. You might have a defective tire. Unless the vibration is felt at idle and increases when you rev the engine, I wouldn't think the vibration is actually from the engine. Hopefully it's still under warranty...
Last edited by fordhd2005; Mar 14, 2019 at 09:19 AM.
Road Captain
Joined: Aug 2013
Posts: 518
Likes: 83
From: NC
First check your tires for cupping and proper inflation. They could be out of balance too. Although not a 2017, I found the torque on my engine mounts significantly out-of-spec at 10,000 miles on my 2016 RGS. Pay particular attention to the front engine mount. I had to re-torque each one. Third, I was getting a vibration in the floorboards over 50 mph. I finally decided to pull the rear wheel and found bad wheel bearings. I'd never had bad rear wheel bearings produce a vibration in the floorboards before.
Last edited by PeteF; Mar 14, 2019 at 08:04 AM.
HDF Community Team
Joined: Mar 2017
Posts: 7,821
Likes: 4,381
From: Texas
First check your tires for cupping and proper inflation. They could be out of balance too. Although not a 2017, I found the torque on my engine mounts significantly out-of-spec at 10,000 miles on my 2016 RGS. Pay particular attention to the front engine mount. I had to re-torque each one. Third, I was getting a vibration in the floorboards over 50 mph. I finally decided to pull the rear wheel and found bad wheel bearings. I'd never had bad rear wheel bearings produce a vibration in the floorboards before.
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Cruiser
Joined: Apr 2015
Posts: 130
Likes: 44
From: Mansfield TX
When riding at speed, pull in the clutch, if the vibration continues probably tires, if it stops probably dirty or wet air filter.
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