Skip to content
View in the app

A better way to browse. Learn more.

Trials Central

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.

Sherco 125 Engine Problem

Featured Replies

Got rattling engine (could be gearbox) anyone got any ideas? :ph34r:

Fill out your profile so we know where you are located and can refer you to someone possibly.

Clutch in / Clutch out / under load / under deceleration / constant / intermittent?????

Could be clutch, could be bearings, could be gears.

Just too many variables, and not enough info, to give an accurate diagnosis.

Does the rattle change when you pull the clutch in, or if you put the brakes on and load up the clutch.If it goes away, most likely rattle between the straight cut gears on the primary drive, and clutch basket. Nothing to worry about.

As stated above, more info needed!

Mine rattled for a long time, and it was a woen clutch basket. It stopped when the clutch was pulled in. It also made a noise like a machine gun when the main bearings gave up and split, and a lot of other things make a bike rattle as well!

Pete.

My 250 (2000) also rattles from the top end, I have changed the clutch basket (now the rubberised one), main bearings,rings etc: so now i'm thinking piston slap....... is this common for a sherco after 4 seasons?

My 03 290 was making a tapping sound when reved in neutral or in gear, clutch in or out. I thought it was an engine problem, but turned out to be the waterpump shaft! The tapping/pinging sound was coming from the bike overheating. (it sounded a bit like an old diesel car) It cost about

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

Account

Navigation

Search

Search

Configure browser push notifications

Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.