Hawk Engine/Transmission Trouble

[Megadan]

Originally Posted by NickThrash

I was riding my hawk around my block for fun since its still pretty cold up here and didnt plan on going long or far. I let it warm up and took it around the block a few times probably didnt even get it pass 4th gear. I was near home and in 2nd gear and gave it some gas, then all of a sudden, I hear a clanking a clunking.

I looked down and didnt see anything and then i shifted gears down and it went away. I then shifted back to 2nd and it clunked a bunch again... I shifted to 3rd and it went away. I went straight back home and shut the bike off..

What kind of trouble might I be looking at here? Ive never opened up an engine before.. Did one of the gears fail and break and would need replaced? Is the HAWK even worth going this deep into the engine work?.. Thanks...

Well, short of taking the motor apart, all we can do is speculate. If I had to hazard a guess, then I would say that it sounds like second gear took a crap on you. Drain the oil and see if you find any chunks of metal debris coming out with it. If so, then the next best thing to do would be to tear into the engine.

Is it worth doing so? That depends on you. The parts for these engines are not very expensive, A gasket kit is around 10 bucks. The gears can be purchased individually from CSC ala the TT250. The Mainshaft gear for second is $3.95, and the Counter shaft gear is $5.50. So, even if both gears somehow got destroyed, you are talking $20 and some time.

As far as complication goes, you can't get much simpler and easier. There have been a couple other guys who have recently had to tear into their engines with no previous experience and they managed to get it done.

Even in the worst case scenario and you had to buy all new internals for the transmission, maybe $100, if that.

[NickThrash]

Originally Posted by Megadan

Well, short of taking the motor apart, all we can do is speculate. If I had to hazard a guess, then I would say that it sounds like second gear took a crap on you. Drain the oil and see if you find any chunks of metal debris coming out with it. If so, then the next best thing to do would be to tear into the engine.

Is it worth doing so? That depends on you. The parts for these engines are not very expensive, A gasket kit is around 10 bucks. The gears can be purchased individually from CSC ala the TT250. The Mainshaft gear for second is $3.95, and the Counter shaft gear is $5.50. So, even if both gears somehow got destroyed, you are talking $20 and some time.

As far as complication goes, you can't get much simpler and easier. There have been a couple other guys who have recently had to tear into their engines with no previous experience and they managed to get it done.

Even in the worst case scenario and you had to buy all new internals for the transmission, maybe $100, if that.

Hey thanks. i was hoping thats all it would be. But also I get very worried when it comes to the engine guts. Sounds like it could be a pain in the ass but might be an interesting experience and not too expensive. Thanks.

[Ariel Red Hunter]

Originally Posted by NickThrash

Hey thanks. i was hoping thats all it would be. But also I get very worried when it comes to the engine guts. Sounds like it could be a pain in the ass but might be an interesting experience and not too expensive. Thanks.

It is NOT a pain in the ass. It is a learning experience. When you dive in to this, you will learn how really simple an engine is. And all the mysteries of transmissions will be revealed. it will truly be a college level mini-course....ARH

[NickThrash]

Okay so i have gotten this far. I have taken both of the covers on each side off, even though i wasnt sure if i would have needed to or not. But where do i go from here?

I see what looks like to clutch plate, the oil pump gears and the mechanism that is attached to the shift lever that rotates and changes the gears.

How do I go about removing the big plate? this is where I get nervous because there are tons of bolts and screws that I cant tell exactly where they go to. Or which ones are necessary to come off and which ones are not

Will I have to take it all the way down to splitting the engine or would I be able to fix the gears from here if I get the stuff out of the way first?

If i do have to split it where do I start?

[NickThrash]

Originally Posted by Ariel Red Hunter

It is NOT a pain in the ass. It is a learning experience. When you dive in to this, you will learn how really simple an engine is. And all the mysteries of transmissions will be revealed. it will truly be a college level mini-course....ARH

I agree, i looked at it with a bit of optimism at first and figured it would be a cool experience I only wish I had a mentor to be here helping lol.

[JerryHawk250]

Originally Posted by NickThrash

I agree, i looked at it with a bit of optimism at first and figured it would be a cool experience I only wish I had a mentor to be here helping lol.

Do you have a manual? This will give you a step by step on how and what you need to take off.

[Mudflap]

Yes, a Honda factory service manual for any model of CG125 will have step by step instructions with pictures.

[NickThrash]

Originally Posted by JerryHawk250

Do you have a manual? This will give you a step by step on how and what you need to take off.

No i dont. unless you mean the HAWK owners manual. But i never noticed anything like that in there.

[JerryHawk250]

Originally Posted by NickThrash

No i dont. unless you mean the HAWK owners manual. But i never noticed anything like that in there.

PM me your email and i'll send the two I have to you.

[Megadan]

Originally Posted by JerryHawk250

Do you have a manual? This will give you a step by step on how and what you need to take off.

^this. I don't have the link to the PDF file on hand, but there is one floating around this site somewhere. Or somebody will link it sooner or later.

You may need to order a tool or two if you don't already have them.

To get the oil spinner and clutch apart you will need one of these guys.
https://www.amazon.com/Locking-Remov...mm+clutch+tool

You will see a nut with 4 notches cut out of it, that is where this tool comes into play.

Also, before you try splitting the cases the cylinder head and cylinder will need to be removed. Just keep that in mind.

[NickThrash]

Originally Posted by Megadan

^this. I don't have the link to the PDF file on hand, but there is one floating around this site somewhere. Or somebody will link it sooner or later.

You may need to order a tool or two if you don't already have them.

To get the oil spinner and clutch apart you will need one of these guys.
https://www.amazon.com/Locking-Remov...mm+clutch+tool

You will see a nut with 4 notches cut out of it, that is where this tool comes into play.

Also, before you try splitting the cases the cylinder head and cylinder will need to be removed. Just keep that in mind.

Okay thanks! Ya just quickly glancing at the manual makes things looks 10x easier than without it.

[JerryHawk250]

Originally Posted by Megadan

^this. I don't have the link to the PDF file on hand, but there is one floating around this site somewhere. Or somebody will link it sooner or later.

You may need to order a tool or two if you don't already have them.

To get the oil spinner and clutch apart you will need one of these guys.
https://www.amazon.com/Locking-Remov...mm+clutch+tool

You will see a nut with 4 notches cut out of it, that is where this tool comes into play.

Also, before you try splitting the cases the cylinder head and cylinder will need to be removed. Just keep that in mind.

And if you don't want to order and wait for the tool you can make one from an old socket with a grinder. The older manual I emailed you even shows how to make one.