[Red_Dawn]

can someone tell me how to set the cam timing on a 1986 trx200sx
i purchased a online manual but it dont tell me how to set the cam timing
any help woulld be appritiated

 

[Billy250X]

There should be a mark on the crank thats viewable through a hole in the bottom case and a mark on the crank sprocket.Make sure it's topdead center o compression stroke and have the cam lobes down.Line the marks up and wala.Good luck.

 

[Helmut]

There should be a mark on the crank thats viewable through a hole in the bottom case and a mark on the crank sprocket.Make sure it's topdead center o compression stroke and have the cam lobes down.Line the marks up and wala.Good luck.

I think Billy meant, a mark on the cam sprocket.

 

[Billy250X]

Yeah sorry.My head was in another place.LOL

 

[TRX2fiveO]

Also make sure the Lobes are facing down. And the marks on the cam gear allign with the top of the head.

 

[Red_Dawn]

there is a mark on the cranh looks like this |T and on the cam i have lines that look like this _ _1 on each side of the cam
then theres 5 holes on the cam 3 at the top and 2 on bottom i,ll take a pik and show you

 

[TRX2fiveO]

The mark above the "T" alligns with the notch in the inspection hole the side case. The - - marks on the cam gear allign with the top of the head where the cam bolts down LOBES FACING DOWN and TDC on COMPRESSION STROKE.

 

[Helmut]

Yeah, it'll sit in the head just like you have it in the first picture. The lobes pointing down.

 

[Red_Dawn]

well not sure what i,m doing wrong it fires at the plug but wont start i have the t mark lined up but maybe i,m not on the compression stroke

 

[Billy250X]

Make sure it is.

 

[Red_Dawn]

this may sound stupid but whats the best way to tell your on the compresion stroke

 

[Billy250X]

Put your finger over the plug hole.You'll feel it.

 

[Red_Dawn]

now i have no compression so i think i might have spaced the rings wrong.

 

[TRX2fiveO]

are the valves closed? how did you space the rings?

 

[Red_Dawn]

here is what happened i had a bad cam and when i took it out one of the ball bearings fell into the motor case so i had to tear down the topend and side covers to find the bearing which i did not find. so whay i had all this off i wanted to buy a piston and rings but i dont have the money right now.so i put it back together and now i have no compression.some one told me that the rings had to set a certain way or it would not seal correctly so i,m gonna take it apaet again and try it all over

 

[TRX2fiveO]

Try this and see if this helps.

 

[Red_Dawn]

yeah that will help me out alot.thanks for your help i,ll get it back together tomarrow and let you no what happens

 

[Helmut]

well not sure what i,m doing wrong it fires at the plug but wont start i have the t mark lined up but maybe i,m not on the compression stroke

If you have the line above the T mark lined up with mark on the case, it has to be on the compression stroke. Then just make sure the lobes are facing down and the two _ _ (lines) on the cam gear are even with the top of the head. Then put your tensioner back in.

You don't have a bent valve or something, do you?

 

[Red_Dawn]

the valves seem to be fine i might have pinched a ring when i put it back together.this just sucks it had a ton of power then i changed the cam and now this. man i cant catch a break with this stuff.thanks for all your help guys

 

[TRX2fiveO]

Anytime bro glad we are here to save you a few bucks anyway.