1974 Suzuki TM250L questions

[nazereth666]

Hey, I have a old Suzuki TM250L that i don't know a whole lot about and hasn't fired up since being in my hands. I really want to fix it up and all that but first thing is I really want to do is make sure it runs. And my main question is what kind of oil does this bike need I believe it is a stock TM250 with a 2 stroke 246cc engine (rough shape) and I don't have a clue what oil it needs. SO I think you would be the bunch to ask.

 

[whenfoxforks-ruled]

A clymers manual or try evilbay for factory. 20:1 for fuel and 20w40 in the trans.

 

[CRazy250]

dont even waste your time, get a manual and tear it down and replace all that needs to be replaced so it will run reguardless.

 

[BadgerMan]

20:1 for fuel and 20w40 in the trans.

Didn't those bikes have an oil injection system?

:coocoo:

 

[whenfoxforks-ruled]

Sure does,stock. Does it have an oil pump?

 

[nazereth666]

Sure does,stock. Does it have an oil pump?

Dont believe so, Although I could be wrong.

 

[docgonzo]

It is very possible someone ditched the injection system. My MX250's pump was gone by the time I aquired it.

Modern oil @ 32:1 works pretty well in these old bikes. I've been using yamalube R @ 32:1 in both my MX250 and RM400 without any problems. It's also easy to find and the price is right too.

 

[nazereth666]

It does have about 2 tubes running from the oil tank to the cylinder could this be part of the injection system?

 

[whenfoxforks-ruled]

See if there is a tube running down by the sprocket, from the oil tank. Is there oil in the tank? http://houseofmotorcycles.bikebandit.com/partsbandit/assets/schematics/Suzuki/SU0281_010.gif

 

[nazereth666]

There is a tube running from back near the sprocket to the middle of the cylinder and another running from the bottom of the cylinder near the sprocket.

Pic:

 

[RS250]

On the other side there is a oil tank that is under the number plate.
I have this same bike. I use Red Line oil for the injector. I took off the top hose to the intake and run 32:1 in the tank. The bike runs strong.

 

[nazereth666]

So any 2 stroke oil should work just fine if I am lucky and the tubes don't have leakes or cracks? I don't really feel like taking the injection off if I don't need to, By the way would anyone happen to know where I can find a kick starter for this so I can get rid of my jerry rigged one :D

 

[whenfoxforks-ruled]

Get a hold of ktm mike,he has a nice stash! I believe you need to get injector oil, suzuki has some sufficient oil.

 

[nazereth666]

Well I did an oil change today, and drained the gas out of the tank and engine, refilled it. Now it is a matter of getting a kick lever for it cause my jerry rigged one kinda bent.

 

[nazereth666]

Anyone have an idea for kick starting I am thinking a big pair of vise grips might work. Any suggestions?

 

[whenfoxforks-ruled]

A 36 inch pair might work. And be looking for a new shaft also! Get a good running start and jump on throwing it into second gear, and it is a great work out!

 

[nazereth666]

I really wanna keep it out of gear until I know the bike is in good shape.

 

[whenfoxforks-ruled]

I do remember a guy, with that bike. Push started, stood up on a wheelie, went about 300 feet, across a street, up a driveway, through a garage door and stopped with the wheel hanging out some guys back wall! The slide was backwards, throttle stuck WFO, years later the guy started Service Honda!

 

[nazereth666]

Yeah, I have never driven any dirt bike over 107cc so I don't wanna test it till I know if it is safe. I know the throttle is closed cause I checked the carb. My main worry is a bent gear shaft, having the bike jump into gear. I might disconnect the chain so I don't have a problem, The bike was badly abused by the previous owner so you never know. I might think about selling it later on since I am not too interested in restoring it.

 

[nazereth666]

Ok, well I tried to start it today without much luck it didn't fire up but I didn't try a whole lot I got too nervous, I will update on progress tommorow.

 

[whenfoxforks-ruled]

Just make sure the kill switch works, and you understand when and how to use it!

 

[BSWIFT]

I have a couple of old TS 250's. I'll check to see if I have two kick start levers. Should be close enough.

 

[nazereth666]

I know when to use it and it works, I had the front wheel strapped to a tree but it still just made me nervous.

 

[nazereth666]

OK UPDATE! The bike fired up this morning, It starts up but doesn't like to run longer than 2 seconds, But boy it sounds great. Any suggestions on how to keep it running? yanking the throttle doesn't seem to do much.

 

[whenfoxforks-ruled]

Take apart the carb, clean and inspect. Check the rubber boots on the carb for cracks. Check the air filter and seals.