OzVMX Forum

Clubroom => Tech Talk => Topic started by: c_stewart on May 03, 2015, 04:41:25 pm

Title: CR250M kick start mechanism
Post by: c_stewart on May 03, 2015, 04:41:25 pm
Hey all,
I have recently finish assembling my rebuilt 74 CR250M engine however when I try to kick it over the kick start slips. If I take the spark plug out the kick start works fine but as soon as there is any resistance from compression it just slips. Ive read that installing a MT250 gear set can help the situation as the gears are a better quality? I've also noticed the shaft coming through the side cover has a bit of play so I might sleeve the side cover, is there anything else I'm missing or am I heading in the right direction to resolve this problem?

Cheers
Chris
Title: Re: CR250M kick start mechanism
Post by: bigk on May 03, 2015, 05:42:03 pm
Sounds like you need a new kick start pawl, maybe have a look at it first. They a NLA form Honda but I have some new ones here if it turns out to be the problem.
K
Title: Re: CR250M kick start mechanism
Post by: bazza on May 03, 2015, 06:22:15 pm
Pawl
Title: Re: CR250M kick start mechanism
Post by: c_stewart on May 04, 2015, 07:47:49 pm
Thanks for the response, I'll definitely check it out.
I'll let you know how I go BigK, I think the poor thing has copped some abuse over the years, judging by the state of the kickstart lever, I think someone has tried to start it with a seized piston at some point!
Title: Re: CR250M kick start mechanism
Post by: c_stewart on May 08, 2015, 07:25:11 pm
Spot on about the pawl, its snapped at the base! (http://i429.photobucket.com/albums/qq16/Cchhrriiss/Mobile%20Uploads/image_zpsumnb6jge.jpg)

When I pulled the engine down I found a little nub of steel in the bottom of the cases and couldn't for the life of me figure out where it came from... now I know!!

How much do you want for a new pawl BigK?
Title: Re: CR250M kick start mechanism
Post by: bigk on May 09, 2015, 10:26:41 am
$20 plus post.
Cheers,
K
Title: Re: CR250M kick start mechanism
Post by: Digga on May 09, 2015, 11:36:35 am
Nice workshop action shot with God's finest Pale Ale in the background  ;D
Title: Re: CR250M kick start mechanism
Post by: c_stewart on May 23, 2015, 07:13:24 pm
So I ended up buying a NOS pawl and installed it tonight but the kick starter still slips  :(
I guess the next step is to replace the inner/outer pawl housing and see if that helps?