A forum for owners of Yamaha TTR250 trail and enduro bikes!

Members Login
Username 
 
Password 
    Remember Me  
The TTR250 FAQ web pages -> TTR250 -> Repairs and maintenance -> Kick Start and Electric Start Jammed
Post Info TOPIC: Kick Start and Electric Start Jammed
Archershome


Veteran Member

Status: Offline
Posts: 44
Date:
Kick Start and Electric Start Jammed
Permalink  
 

Hello all, I would like some advice on the following.

My Kick Start and Electric Start have jammed on my bike, I can move the crank using socket but only some of the way round in either direction before it jams.

I have taken CAM cover off and looked at timing chain and valves, you can see that this all looks intact clean and tidy, rotating with socket you can see the outlet valves operate.

At the point at which it jams is when the CAMS are horizontal and both sets of valves are closed. This would indicate to me that its not the piston hitting on a stuck valve. MAYBE?

Does anyone have any advice that might point me in the right direction. blankstare

Thanks



-- Edited by Archershome on Sunday 2nd of March 2014 01:20:02 PM

__________________
TTRfan


Super Guru

Status: Offline
Posts: 8606
Date:
Permalink  
 

When both sets of valves are closed, are the valve clearances all normal?

If a valve or valves were stuck down then you would expect the clearances on the stuck valves to be on the large side!

Brian

 



__________________

Exeter, Devon, UK

http://www.ttr250.com  - The one and only dedicated TTR250 FAQ!  

TIP: For easy viewing bookmark the "Recent Posts" view - http://ttr250.activeboard.com/p/recent/ 
rodge70


Veteran Member

Status: Offline
Posts: 34
Date:
Permalink  
 

had a very simaler thing to this on a serrow,though more like a seized engine,kick and electric just locked up,turned out to be starter clutch had fallen apart and had locked the crankshaft up with bent bits of starter clutch material.
realise the serrow and ttr use different starter types,but you could remove outer casings and see whats going on down below if your happy with the valve side of things,good luck


__________________
TT-R250M


Super Guru

Status: Offline
Posts: 1324
Date:
Permalink  
 

Could be a big end/crankshaft bearing failing too. However, this is not very common unless the oil has been run dry or an overheating issue.

My bet is on the sprag clutch falling to bits and jamming the crankshaft or starter gears though. wink

Jarrah



__________________

2000 TT-R250M-

Spoiler
Shank


Newbie

Status: Offline
Posts: 3
Date:
Permalink  
 

@archershome

What did you find? With this issue?

I have the same?

Thanks



__________________
ttr steve


Super Guru

Status: Offline
Posts: 2679
Date:
Permalink  
 

Have you checked your sprag clutch ?



__________________

totallyttrs.com

 
Page 1 of 1  sorted by
 
Quick Reply

Please log in to post quick replies.
The TTR250 FAQ web pages -> TTR250 -> Repairs and maintenance -> Kick Start and Electric Start Jammed


Create your own FREE Forum
Report Abuse 		Powered by ActiveBoard